Transforming Big Data into AI-ready data for nutrition and obesity research

OBJECTIVE

Big Data are increasingly used in obesity and nutrition research to gain new insights and derive personalized guidance; however, this data in raw form are often not usable. Substantial preprocessing, which requires machine learning (ML), human judgment, and specialized software, is required to transform Big Data into artificial intelligence (AI)- and ML-ready data. These preprocessing steps are the most complex part of the entire modeling pipeline. Understanding the complexity of these steps by the end user is critical for reducing misunderstanding, faulty interpretation, and erroneous downstream conclusions.

METHODS

We reviewed three popular obesity/nutrition Big Data sources: microbiome, metabolomics, and accelerometry. The preprocessing pipelines, specialized software, challenges, and how decisions impact final AI- and ML-ready products were detailed.

RESULTS

Opportunities for advances to improve quality control, speed of preprocessing, and intelligent end user consumption were presented.

CONCLUSIONS

Big Data have the exciting potential for identifying new modifiable factors that impact obesity research. However, to ensure accurate interpretation of conclusions arising from Big Data, the choices involved in preparing AI- and ML-ready data need to be transparent to investigators and clinicians relying on the conclusions.

Dietary Intake and Symptom Severity in Women with Fecal Incontinence

INTRODUCTION AND HYPOTHESIS

The goal of this study was to determine whether dietary fat/fiber intake was associated with fecal incontinence (FI) severity.

METHODS

Planned supplemental analysis of a randomized clinical trial evaluating the impact of 12-week treatment with percutaneous tibial nerve stimulation versus sham in reducing FI severity in women. All subjects completed a food screener questionnaire at baseline. FI severity was measured using the seven-item validated St. Mark's (Vaizey) FI severity scale. Participants also completed a 7-day bowel diary capturing the number of FI-free days, FI events, and bowel movements per week. Spearman's correlations were calculated between dietary, St. Mark's score, and bowel diary measures.

RESULTS

One hundred and eighty-six women were included in this analysis. Mean calories from fats were 32% (interquartile range [IQR] 30-35%). Mean dietary fiber intake was 13.9 ± 4.3 g. The percentage of calories from fats was at the higher end of recommended values, whereas fiber intake was lower than recommended for adult women (recommended values: calories from fat 20-35% and 22-28 g of fiber/day). There was no correlation between St. Mark's score and fat intake (r = 0.11, p = 0.14) or dietary fiber intake (r = -0.01, p = 0.90). There was a weak negative correlation between the number of FI-free days and total fat intake (r = -0.20, p = 0.008). Other correlations between dietary fat/fiber intake and bowel diary measures were negligible or nonsignificant.

CONCLUSION

Overall, in women with moderate to severe FI, there was no association between FI severity and dietary fat/fiber intake. Weak associations between FI frequency and fat intake may suggest a role for dietary assessment in the evaluation of women with FI.

Correlation Between Mobile-Application Electronic Bowel Diary and Validated Questionnaires in Women with Fecal Incontinence

INTRODUCTION AND HYPOTHESIS

Despite growing interest in a mobile-app bowel diary to assess fecal incontinence (FI) symptoms, data are limited regarding the correlation between mobile-app diary and questionnaire-based outcomes. The primary aim is to determine whether percentage reduction in FI episodes (FIEs)/week recorded on a mobile-app diary correlates with changes in scores of validated FI-symptom measures from baseline to 12 weeks in women with FI undergoing percutaneous tibial nerve stimulation (PTNS) versus sham.

METHODS

This is a planned secondary analysis of a multicenter randomized trial in which women with FI underwent PTNS or sham. FIEs were collected using a mobile-app diary at baseline and after 12 weekly sessions. FI-symptom-validated measures included St. Mark's, Accidental Bowel Leakage Evaluation, FI Severity Index (FISI), Colorectal Anal Distress Inventory, Colorectal Anal Impact Questionnaire, FI Quality of Life, Patient Global Impression of Improvement (PGI-I), and Patient Global Symptom Control (PGSC) rating. Spearman's correlation coefficient (ρ) was computed between %-reduction in FIEs/week and change in questionnaire scores from baseline to 12 weeks. Significance was set at 0.005 to account for multiple comparisons.

RESULTS

Baseline characteristics of 163 women (109 PTNS, 54 sham) include mean age 63.4±11.6, 81% white, body mass index 29.4±6.6 kg/m2, 4% previous FI surgeries, 6.6±5.5 FIEs/week, and St. Mark's score 17.4±2.6. A significant correlation was demonstrated between %-reduction in FIEs/week and all questionnaires (p<0.005). A moderate-strength correlation (|ρ|>0.4) was observed for St. Mark's (ρ=0.48), FISI (ρ=0.46), PGI-I (ρ=0.51), and PGSC (ρ=-0.43).

CONCLUSIONS

In women with FI randomized to PTNS versus sham, a moderate correlation was noted between FIEs measured via mobile-app diary and FI-symptom-validated questionnaire scores.

Vaginal morphology and position associated with prolapse recurrence after vaginal surgery: A secondary analysis of the DEMAND study

OBJECTIVE

To identify vaginal morphology and position factors associated with prolapse recurrence following vaginal surgery.

DESIGN

Secondary analysis of magnetic resonance images (MRI) of the Defining Mechanisms of Anterior Vaginal Wall Descent cross-sectional study.

SETTING

Eight clinical sites in the US Pelvic Floor Disorders Network.

POPULATION OR SAMPLE

Women who underwent vaginal mesh hysteropexy (hysteropexy) with sacrospinous fixation or vaginal hysterectomy with uterosacral ligament suspension (hysterectomy) for uterovaginal prolapse between April 2013 and February 2015.

METHODS

The MRI (rest, strain) obtained 30-42 months after surgery, or earlier for participants with recurrence who desired reoperation before 30 months, were analysed. MRI-based prolapse recurrence was defined as prolapse beyond the hymen at strain on MRI. Vaginal segmentations (at rest) were used to create three-dimensional models placed in a morphometry algorithm to quantify and compare vaginal morphology (angulation, dimensions) and position.

MAIN OUTCOME MEASURES

Vaginal angulation (upper, lower and upper-lower vaginal angles in the sagittal and coronal plane), dimensions (length, maximum transverse width, surface area, volume) and position (apex, mid-vagina) at rest.

RESULTS

Of the 82 women analysed, 12/41 (29%) in the hysteropexy group and 22/41 (54%) in the hysterectomy group had prolapse recurrence. After hysteropexy, women with recurrence had a more laterally deviated upper vagina (p = 0.02) at rest than women with successful surgery. After hysterectomy, women with recurrence had a more inferiorly (lower) positioned vaginal apex (p = 0.01) and mid-vagina (p = 0.01) at rest than women with successful surgery.

CONCLUSIONS

Vaginal angulation and position were associated with prolapse recurrence and suggestive of vaginal support mechanisms related to surgical technique and potential unaddressed anatomical defects. Future prospective studies in women before and after prolapse surgery may distinguish these two factors.

Age of diagnosis for children with chromosome 15q syndromes

OBJECTIVE

The objective of this study was to identify the age of diagnosis for children with one of three neurogenetic conditions resulting from changes in chromosome 15 (Angelman syndrome [AS], Prader-Willi syndrome [PWS], and duplication 15q syndrome [Dup15q]).

METHODS

Data about the diagnostic process for each condition were contributed by the advocacy organizations. Median and interquartile ranges were calculated for each condition by molecular subtype and year. Comparison tests were run to explore group differences.

RESULTS

The median age of diagnosis was 1.8 years for both AS and Dup15q. PWS was diagnosed significantly younger at a median age of 1 month. Deletion subtypes for both PWS and AS were diagnosed earlier than nondeletion subtypes, and children with isodicentric duplications in Dup15q were diagnosed earlier than those with interstitial duplications.

CONCLUSION

Understanding variability in the age of diagnosis for chromosome 15 disorders is an important step in reducing the diagnostic odyssey and improving access to interventions for these populations. Results from this study provide a baseline by which to evaluate efforts to reduce the age of diagnosis for individuals with these conditions.

Use of term reference infants in assessing the developmental outcome of extremely preterm infants: lessons learned in a multicenter study

OBJECTIVE

Extremely preterm (EP) impairment rates are likely underestimated using the Bayley III norm-based thresholds scores and may be better assessed relative to concurrent healthy term reference (TR) infants born in the same hospital.

STUDY DESIGN

Blinded, certified examiners in the Neonatal Research Network (NRN) evaluated EP survivors and a sample of healthy TR infants recruited near the 2-year assessment age.

RESULTS

We assessed 1452 EP infants and 183 TR infants. TR-based thresholds showed higher overall EP impairment than Bayley norm-based thresholds (O.R. = 1.86; [95% CI 1.56-2.23], especially for severe impairment (36% vs. 24%; p ≤ 0.001). Difficulty recruiting TR patients at 2 years extended the study by 14 months and affected their demographics.

CONCLUSION

Impairment rates among EP infants appear to be substantially underestimated from Bayley III norms. These rates may be best assessed by comparison with healthy term infants followed with minimal attrition from birth in the same centers.

CLINICALTRIALS

GOV ID

Term Reference (under the Generic Database Study): NCT00063063.

Adherence to Perioperative Behavioral Therapy With Pelvic Floor Muscle Training in Women Receiving Vaginal Reconstructive Surgery for Pelvic Organ Prolapse

OBJECTIVE

The objective of this study was to describe adherence to behavioral and pelvic floor muscle training in women undergoing vaginal reconstructive surgery for organ prolapse and to examine whether adherence was associated with 24-month outcomes.

METHODS

Participants were women ≥18 years of age, with vaginal bulge and stress urinary incontinence symptoms, planning to undergo vaginal reconstructive surgery for stages 2 to 4 vaginal or uterine prolapse. They were randomized to either sacrospinous ligament fixation or uterosacral ligament suspension and to perioperative behavioral and pelvic floor muscle training or usual care. Measurements included anatomic failure, pelvic floor muscle strength, participant-reported symptoms, and perceived improvement. Analyses compared women with lower versus higher adherence.

RESULTS

Forty-eight percent of women performed pelvic floor muscle exercises (PFMEs) daily at the 4- to 6-week visit. Only 33% performed the prescribed number of muscle contractions. At 8 weeks, 37% performed PFMEs daily, and 28% performed the prescribed number of contractions. No significant relationships were found between adherence and 24-month outcomes.

CONCLUSION

Adherence to a behavioral intervention was low following vaginal reconstructive surgery for pelvic organ prolapse. The degree of adherence to perioperative training did not appear to influence 24-month outcomes in women undergoing vaginal prolapse surgery.

IMPACT

This study contributes to the understanding of participant adherence to PFMEs and the impact that participant adherence has on outcomes at 2, 4 to 6, 8, and 12 weeks and 24 months postoperatively. It is important to educate women to follow up with their therapist or physician to report new or unresolved pelvic symptoms.

Association Between Enlarged Genital Hiatus and Composite Surgical Failure After Vaginal Hysterectomy With Uterosacral Ligament Suspension

IMPORTANCE

The impact of a persistently enlarged genital hiatus (GH) after vaginal hysterectomy with uterosacral ligament suspension on prolapse outcomes is currently unclear.

OBJECTIVES

This secondary analysis of the Study of Uterine Prolapse Procedures Randomized trial was conducted among participants who underwent vaginal hysterectomy with uterosacral ligament suspension. We hypothesized that women with a persistently enlarged GH size would have a higher proportion of prolapse recurrence.

STUDY DESIGN

Women who underwent vaginal hysterectomy with uterosacral ligament suspension as part of the Study of Uterine Prolapse Procedures Randomized trial (NCT01802281) were divided into 3 groups based on change in their preoperative to 4- to 6-week postoperative GH measurements: (1) persistently enlarged GH, 2) improved GH, or (3) stably normal GH. Baseline characteristics and 2-year surgical outcomes were compared across groups. A logistic regression model for composite surgical failure controlling for advanced anterior wall prolapse and GH group was fitted.

RESULTS

This secondary analysis included 81 women. The proportion with composite surgical failure was significantly higher among those with a persistently enlarged GH (50%) compared with a stably normal GH (12%) with an unadjusted risk difference of 38% (95% confidence interval, 4%-68%). When adjusted for advanced prolapse in the anterior compartment at baseline, the odds of composite surgical failure was 6 times higher in the persistently enlarged GH group compared with the stably normal group (95% confidence interval, 1.0-37.5; P = 0.06).

CONCLUSION

A persistently enlarged GH after vaginal hysterectomy with uterosacral ligament suspension for pelvic organ prolapse may be a risk factor for recurrent prolapse.

Assessment of Corticosteroid Therapy and Death or Disability According to Pretreatment Risk of Death or Bronchopulmonary Dysplasia in Extremely Preterm Infants

Importance

Meta-analyses suggest that corticosteroids may be associated with increased survival without cerebral palsy in infants at high risk of bronchopulmonary dysplasia (BPD) but are associated with adverse neurologic outcomes in low-risk infants. Whether this association exists in contemporary practice is uncertain because most randomized clinical trials administered corticosteroids earlier and at higher doses than currently recommended.

Objective

To evaluate whether the pretreatment risk of death or grade 2 or 3 BPD at 36 weeks' postmenstrual age modified the association between postnatal corticosteroid therapy and death or disability at 2 years' corrected age in extremely preterm infants.

Design, Setting, and Participants

This cohort study analyzed data on 482 matched pairs of infants from 45 participating US hospitals in the National Institute of Child Health and Human Development Neonatal Research Network Generic Database (GDB). Infants were included in the cohort if they were born at less than 27 weeks' gestation between April 1, 2011, and March 31, 2017; survived the first 7 postnatal days; and had 2-year death or developmental follow-up data collected between January 2013 and December 2019. Corticosteroid-treated infants were propensity score matched with untreated controls. Data were analyzed from September 1, 2019, to November 30, 2022.

Exposure

Systemic corticosteroid therapy to prevent BPD that was initiated between day 8 and day 42 after birth.

Main Outcomes and Measures

The primary outcome was death or moderate to severe neurodevelopmental impairment at 2 years' corrected age. The secondary outcome was death or moderate to severe cerebral palsy at 2 years' corrected age.

Results

A total of 482 matched pairs of infants (mean [SD] gestational age, 24.1 [1.1] weeks]; 270 males [56.0%]) were included from 656 corticosteroid-treated infants and 2796 potential controls. Most treated infants (363 [75.3%]) received dexamethasone. The risk of death or disability associated with corticosteroid therapy was inversely associated with the estimated pretreatment probability of death or grade 2 or 3 BPD. The risk difference for death or neurodevelopmental impairment associated with corticosteroids decreased by 2.7% (95% CI, 1.9%-3.5%) for each 10% increase in the pretreatment risk of death or grade 2 or 3 BPD. This risk transitioned from estimated net harm to benefit when the pretreatment risk of death or grade 2 or 3 BPD exceeded 53% (95% CI, 44%-61%). For death or cerebral palsy, the risk difference decreased by 3.6% (95% CI, 2.9%-4.4%) for each 10% increase in the risk of death or grade 2 or 3 BPD and transitioned from estimated net harm to benefit at a pretreatment risk of 40% (95% CI, 33%-46%).

Conclusions and Relevance

Results of this study suggested that corticosteroids were associated with a reduced risk of death or disability in infants at moderate to high pretreatment risk of death or grade 2 or 3 BPD but with possible harm in infants at lower risk.

Reoperation for prolapse recurrence after sacrospinous mesh hysteropexy: characteristics of women choosing retreatment

INTRODUCTION AND HYPOTHESIS

Factors that contribute to reoperation and surgical approaches for the management of recurrent uterovaginal prolapse after vaginal mesh hysteropexy (mesh hysteropexy) are unknown. We aimed to describe surgical management of pelvic organ prolapse recurrence after vaginal mesh hysteropexy, and patient characteristics in those who chose reoperation.

METHODS

This is a descriptive analysis of women who experienced treatment failure within 5 years of mesh hysteropexy in a multi-site randomized trial. The composite definition of treatment failure included retreatment (pessary or reoperation), prolapse beyond the hymen, or bothersome prolapse symptoms. Characteristics of those pursuing and not pursuing repeat prolapse surgery, measures of prolapse, and symptom severity are described.

RESULTS

Over 5-year follow up, 31/91 (34%) of the hysteropexy group met treatment failure criteria. All seven women who pursued reoperation reported bothersome prolapse symptoms; six were anatomic failures. Most seeking reoperation were early treatment failures; six (86%) by the 12-month visit and all by the 18-month visit. Compared to those electing expectant management, those pursuing reoperation had more apical prolapse, POP-Q point C median (IQR) -5.5 (-6.0, -4.0) cm versus +1.0 (-1.0, 3.0) cm respectively. Hysterectomy was performed in 6/7 reoperations (three vaginal, three endoscopic), with apical suspension in 5/6 hysterectomies. One participant with posterior compartment prolapse underwent transvaginal enterocele plication, uterosacral ligament suspension with posterior colpoperineorrhaphy. At a mean surgical follow-up of 34.3 (15.8) months, all women remained without anatomic or symptomatic failure.

CONCLUSIONS

When recurrent prolapse after mesh hysteropexy occurred, most women did not choose reoperation. Those who pursued surgery experienced more significant apical prolapse and were universally symptomatic.

CLINICAL TRIAL IDENTIFICATION NUMBER

NCT01802281.

Critical review of bariatric surgical outcomes in patients with Prader-Willi syndrome and other hyperphagic disorders

OBJECTIVE

The aim of this study was to review bariatric procedure outcomes among patients with Prader-Willi syndrome (PWS), melanocortin 4 receptor (MC4R) mutations, Bardet-Biedl syndrome, and hypothalamic obesity.

METHODS

Systematic published literature review used the following search terms: "Prader-Willi syndrome," "Bardet-Biedl syndrome," "hyperphagia," "bariatric surgery," "MC4R"/"melanocortin 4 receptor", "hypothalamic obesity," and "bariatric procedure." Information collected included demographics, genetics, anthropometry, procedure type, outcomes, and complications, with inclusion of case series and clinical reports given the rarity of the disorders. For PWS, postoperative weight-change percentage and BMI up to 14 years following surgery were analyzed using general linear mixed models, with descriptive outcomes for other conditions.

RESULTS

A total of 54 publications were identified, with variable follow-up periods for 202 patients (114 with PWS, 43 with MC4R mutations, 7 with Bardet-Biedl syndrome, and 38 with hypothalamic obesity) among bariatric procedures. Weight loss of patients with PWS was greatest within 1 year of surgery, with weight-change percentage not significantly different from 0 at 5 years. Long-term results in other conditions were variable and featured suboptimal weight loss and increased reoperation risk.

CONCLUSIONS

Bariatric procedures among hyperphagic individuals, including those with PWS, report variable results and outcomes. Benefits of bariatric surgery may be less durable in hyperphagic disorders in comparison with other patients with severe obesity.

Percutaneous Tibial Nerve Stimulation vs Sham Stimulation for Fecal Incontinence in Women: NeurOmodulaTion for Accidental Bowel Leakage Randomized Clinical Trial

INTRODUCTION

To determine whether percutaneous tibial nerve stimulation (PTNS) is superior to sham stimulation for the treatment of fecal incontinence (FI) in women refractory to first-line treatments.

METHODS

Women aged 18 years or older with ≥3 months of moderate-to-severe FI that persisted after a 4-week run-in phase were randomized 2:1 (PTNS:sham stimulation) to 12 weekly 30-minute sessions in this multicenter, single-masked, controlled superiority trial. The primary outcome was change from baseline FI severity measured by St. Mark score after 12 weeks of treatment (range 0-24; minimal important difference, 3-5 points). The secondary outcomes included electronic bowel diary events and quality of life. The groups were compared using an adjusted general linear mixed model.

RESULTS

Of 199 women who entered the run-in period, 166 (of 170 eligible) were randomized, (111 in PTNS group and 55 in sham group); the mean (SD) age was 63.6 (11.6) years; baseline St. Mark score was 17.4 (2.7); and recording was 6.6 (5.5) FI episodes per week. There was no difference in improvement from baseline in St. Mark scores in the PTNS group when compared with the sham group (-5.3 vs -3.9 points, adjusted difference [95% confidence interval] -1.3 [-2.8 to 0.2]). The groups did not differ in reduction in weekly FI episodes (-2.1 vs -1.9 episodes, adjusted difference [95% confidence interval] -0.26 [-1.85 to 1.33]). Condition-specific quality of life measures did not indicate a benefit of PTNS over sham stimulation. Serious adverse events occurred in 4% of each group.

DISCUSSION

Although symptom reduction after 12 weeks of PTNS met a threshold of clinical importance, it did not differ from sham stimulation. These data do not support the use of PTNS as conducted for the treatment of FI in women.

Neuropsychiatric features of Prader-Willi syndrome

Prader-Willi syndrome (PWS) is a genetic disorder characterized by hypotonia and poor feeding in infancy which progresses to hyperphagia in early-mid childhood, as well as developmental delays, a spectrum of behavioral and psychiatric concerns, endocrinopathies, orthopedic issues, and less commonly, seizures, sleep apnea, and narcolepsy with or without cataplexy. This study used data in the Global PWS Registry (N = 893) to explore the onset and severity over time of the neuropsychiatric features reported in individuals with PWS and explored its associations with sleep disorders, seizures, and psychiatric symptoms. Results demonstrate that seizures are more common in the deletion subtype and that narcolepsy and cataplexy are more common in individuals who have sleep-related seizures. Finally, this work shows that anxiety and compulsive behaviors are persistent features of PWS that may arise early in childhood, and that anxiety is associated with higher frequency of other comorbid psychiatric diagnoses. In conclusion, this study is one of the largest to date characterizing sleep disorders and neuropsychiatric characteristics of individuals with PWS and reports on the novel association between sleep disorders and seizures. This study is also one of the first to offer details on the nature of the progression of these features in individuals with PWS.

Cost-effectiveness of behavioral and pelvic floor muscle therapy combined with midurethral sling surgery vs surgery alone among women with mixed urinary incontinence: results of the Effects of Surgical Treatment Enhanced With Exercise for Mixed Urinary Incontinence randomized trial

BACKGROUND

Urinary incontinence is prevalent among women, and it has a substantial economic impact. Mixed urinary incontinence, with both stress and urgency urinary incontinence symptoms, has a greater adverse impact on quality of life and is more complex to treat than either stress or urgency urinary incontinence alone. Studies evaluating the cost-effectiveness of treating both the stress and urgency urinary incontinence components simultaneously are lacking.

OBJECTIVE

Cost-effectiveness was assessed between perioperative behavioral and pelvic floor muscle therapies combined with midurethral sling surgery and midurethral sling surgery alone for the treatment of women with mixed urinary incontinence. The impact of baseline severe urgency urinary incontinence symptoms on cost-effectiveness was assessed.

STUDY DESIGN

This prospective economic evaluation was performed concurrently with the Effects of Surgical Treatment Enhanced with Exercise for Mixed Urinary Incontinence randomized trial that was conducted from October 2013 to April 2016. Participants included 480 women with moderate-to-severe stress and urgency urinary incontinence symptoms and at least 1 stress urinary incontinence episode and 1 urgency urinary incontinence episode on a 3-day bladder diary. The primary within-trial analysis was from the healthcare sector and societal perspectives, with a 1-year time horizon. Costs were in 2019 US dollars. Effectiveness was measured in quality-adjusted life-years and reductions in urinary incontinence episodes per day. Incremental cost-effectiveness ratios of combined treatment vs midurethral sling surgery alone were calculated, and cost-effectiveness acceptability curves were generated. Analysis was performed for the overall study population and subgroup of women with Urogenital Distress Inventory irritative scores of ≥50th percentile.

RESULTS

The costs for combined treatment were higher than the cost for midurethral sling surgery alone from both the healthcare sector perspective ($5100 [95% confidence interval, $5000-$5190] vs $4470 [95% confidence interval, $4330-$4620]; P<.01) and the societal perspective ($9260 [95% confidence interval, $8590-$9940] vs $8090 [95% confidence interval, $7630-$8560]; P<.01). There was no difference between combined treatment and midurethral sling surgery alone in quality-adjusted life-years (0.87 [95% confidence interval, 0.86-0.89] vs 0.87 [95% confidence interval, 0.86-0.89]; P=.90) or mean reduction in urinary incontinence episodes per day (-4.76 [95% confidence interval, -4.51 to 5.00] vs -4.50 [95% confidence interval, -4.25 to 4.75]; P=.13). When evaluating the overall study population, from both the healthcare sector and societal perspectives, midurethral sling surgery alone was superior to combined treatment. The probability that combined treatment is cost-effective compared with midurethral sling surgery alone is ≤28% from the healthcare sector and ≤19% from the societal perspectives for a willingness-to-pay value of ≤$150,000 per quality-adjusted life-years. For women with baseline Urogenital Distress Inventory irritative scores of ≥50th percentile, combined treatment was cost-effective compared with midurethral sling surgery alone from both the healthcare sector and societal perspectives. The probability that combined treatment is cost-effective compared with midurethral sling surgery alone for this subgroup is ≥90% from both the healthcare sector and societal perspectives, at a willingness-to-pay value of ≥$150,000 per quality-adjusted life-years.

CONCLUSION

Overall, perioperative behavioral and pelvic floor muscle therapies combined with midurethral sling surgery was not cost-effective compared with midurethral sling surgery alone for the treatment of women with mixed urinary incontinence. However, combined treatment was of good value compared with midurethral sling surgery alone for women with baseline severe urgency urinary incontinence symptoms.

Subgroups of failure after surgery for pelvic organ prolapse and associations with quality of life outcomes: a longitudinal cluster analysis

BACKGROUND

Treatment outcomes after pelvic organ prolapse surgery are often presented as dichotomous "success or failure" based on anatomic and symptom criteria. However, clinical experience suggests that some women with outcome "failures" are asymptomatic and perceive their surgery to be successful and that other women have anatomic resolution but continue to report symptoms. Characterizing failure types could be a useful step to clarify definitions of success, understand mechanisms of failure, and identify individuals who may benefit from specific therapies.

OBJECTIVE

This study aimed to identify clusters of women with similar failure patterns over time and assess associations among clusters and the Pelvic Organ Prolapse Distress Inventory, Short-Form Six-Dimension health index, Patient Global Impression of Improvement, patient satisfaction item questionnaire, and quality-adjusted life-year.

STUDY DESIGN

Outcomes were evaluated for up to 5 years in a cohort of participants (N=709) with stage ≥2 pelvic organ prolapse who underwent surgical pelvic organ prolapse repair and had sufficient follow-up in 1 of 4 multicenter surgical trials conducted by the Eunice Kennedy Shriver National Institute of Child Health and Human Development Pelvic Floor Disorders Network. Surgical success was defined as a composite measure requiring anatomic success (Pelvic Organ Prolapse Quantification system points Ba, Bp, and C of ≤0), subjective success (absence of bothersome vaginal bulge symptoms), and absence of retreatment for pelvic organ prolapse. Participants who experienced surgical failure and attended ≥4 visits from baseline to 60 months after surgery were longitudinally clustered, accounting for similar trajectories in Ba, Bp, and C and degree of vaginal bulge bother; moreover, missing data were imputed. Participants with surgical success were grouped into a separate cluster.

RESULTS

Surgical failure was reported in 276 of 709 women (39%) included in the analysis. Failures clustered into the following 4 mutually exclusive subgroups: (1) asymptomatic intermittent anterior wall failures, (2) symptomatic intermittent anterior wall failures, (3) asymptomatic intermittent anterior and posterior wall failures, and (4) symptomatic all-compartment failures. Each cluster had different bulge symptoms, anatomy, and retreatment associations with quality of life outcomes. Asymptomatic intermittent anterior wall failures (n=150) were similar to surgical successes with Ba values that averaged around -1 cm but fluctuated between anatomic success (Ba≤0) and failure (Ba>0) over time. Symptomatic intermittent anterior wall failures (n=82) were anatomically similar to asymptomatic intermittent anterior failures, but women in this cluster persistently reported bothersome bulge symptoms and the lowest quality of life, Short-Form Six-Dimension health index scores, and perceived success. Women with asymptomatic intermittent anterior and posterior wall failures (n=28) had the most severe preoperative pelvic organ prolapse but the lowest symptomatic failure rate and retreatment rate. Participants with symptomatic all-compartment failures (n=16) had symptomatic and anatomic failure early after surgery and the highest retreatment of any cluster.

CONCLUSION

In particular, the following 4 clusters of pelvic organ prolapse surgical failure were identified in participants up to 5 years after pelvic organ prolapse surgery: asymptomatic intermittent anterior wall failures, symptomatic intermittent anterior wall failures, asymptomatic intermittent anterior and posterior wall failures, and symptomatic all-compartment failures. These groups provide granularity about the nature of surgical failures after pelvic organ prolapse surgery. Future work is planned for predicting these distinct outcomes using patient characteristics that can be used for counseling women individually.

Defining mechanisms of recurrence following apical prolapse repair based on imaging criteria

BACKGROUND

Prolapse recurrence after transvaginal surgical repair is common; however, its mechanisms are ill-defined. A thorough understanding of how and why prolapse repairs fail is needed to address their high rate of anatomic recurrence and to develop novel therapies to overcome defined deficiencies.

OBJECTIVE

This study aimed to identify mechanisms and contributors of anatomic recurrence after vaginal hysterectomy with uterosacral ligament suspension (native tissue repair) vs transvaginal mesh (VM) hysteropexy surgery for uterovaginal prolapse.

STUDY DESIGN

This multicenter study was conducted in a subset of participants in a randomized clinical trial by the Eunice Kennedy Shriver National Institute of Child Health and Human Development Pelvic Floor Disorders Network. Overall, 94 women with uterovaginal prolapse treated via native tissue repair (n=48) or VM hysteropexy (n=46) underwent pelvic magnetic resonance imaging at rest, maximal strain, and poststrain rest (recovery) 30 to 42 months after surgery. Participants who desired reoperation before 30 to 42 months were imaged earlier to assess the impact of the index surgery. Using a novel 3-dimensional pelvic coordinate system, coregistered midsagittal images were obtained to assess study outcomes. Magnetic resonance imaging-based anatomic recurrence (failure) was defined as prolapse beyond the hymen. The primary outcome was the mechanism of failure (apical descent vs anterior vaginal wall elongation), including the frequency and site of failure. Secondary outcomes included displacement of the vaginal apex and perineal body and change in the length of the anterior wall, posterior wall, vaginal perimeter, and introitus of the vagina from rest to strain and rest to recovery. Group differences in the mechanism, frequency, and site of failure were assessed using the Fisher exact tests, and secondary outcomes were compared using Wilcoxon rank-sum tests.

RESULTS

Of the 88 participants analyzed, 37 (42%) had recurrent prolapse (VM hysteropexy, 13 of 45 [29%]; native tissue repair, 24 of 43 [56%]). The most common site of failure was the anterior compartment (VM hysteropexy, 38%; native tissue repair, 92%). The primary mechanism of recurrence was apical descent (VM hysteropexy, 85%; native tissue repair, 67%). From rest to strain, failures (vs successes) had greater inferior displacement of the vaginal apex (difference, -12 mm; 95% confidence interval, -19 to -6) and perineal body (difference, -7 mm; 95% confidence interval, -11 to -4) and elongation of the anterior vaginal wall (difference, 12 mm; 95% confidence interval, 8-16) and vaginal introitus (difference, 11 mm; 95% confidence interval, 7-15).

CONCLUSION

The primary mechanism of prolapse recurrence following vaginal hysterectomy with uterosacral ligament suspension or VM hysteropexy was apical descent. In addition, greater inferior descent of the vaginal apex and perineal body, lengthening of the anterior vaginal wall, and increased size of the vaginal introitus with strain were associated with anatomic failure. Further studies are needed to provide additional insight into the mechanism by which these factors contribute to anatomic failure.

Comparative effectiveness of biofeedback and injectable bulking agents for treatment of fecal incontinence: Design and methods

Fecal incontinence (FI), the involuntary passage of stool, is common and can markedly impair the quality of life. Among patients who fail initial options (pads or protective devices, bowel modifying agents, and pelvic floor exercises), the options are pelvic floor biofeedback (BIO), perianal injection with bulking agents (INJ), and sacral nerve electrical stimulation (SNS), which have not been subjected to head-to-head comparisons. This study will compare the safety and efficacy of BIO and INJ for managing FI. The impact of these approaches on quality-of-life and psychological distress, cost effectiveness, and predictors of response to therapy will also be evaluated. Six centers in the United States will enroll approximately 285 patients with moderate to severe FI. Patients who have 4 or more FI episodes over 2 weeks proceed to a 4-week trial of enhanced medical management (EMM) (ie, education, bowel management, and pelvic floor exercises). Thereafter, 194 non-responders as defined by a less than 75% reduction in the frequency of FI will be randomized to BIO or INJ. Three months later, the efficacy, safety, and cost of therapy will be assessed; non-responders will be invited to choose to add the other treatment or SNS for the remainder of the study. Early EMM responders will be re-evaluated 3 months later and non-responders randomized to BIO or INJ. Standardized, and where appropriate validated approaches will be used for study procedures, which will be performed by trained personnel. Prospectively collected data on care costs and resource utilization will be used for cost effectiveness analyses.

The Design of a Prospective Trial to Evaluate the Role of Preoperative Frailty Assessment in Older Women Undergoing Surgery for the Treatment of Pelvic Organ Prolapse: The FASt Supplemental Trial

OBJECTIVE

We present the rationale for and the design of a prospective trial to evaluate the role of preoperative frailty and mobility assessments in older women undergoing surgery for the treatment of pelvic organ prolapse (POP) as a planned prospective supplemental trial to the ASPIRe (Apical Suspension Repair for Vault Prolapse In a Three-Arm Randomized Trial Design) trial. The Frailty ASPIRe Study (FASt) examines the impact of preoperative frailty and mobility on surgical outcomes in older women (≥65 years) participating in the ASPIRe trial. The primary objective of FASt is to determine the impact of preoperative age, multimorbidity, frailty, and decreased mobility on postoperative outcomes in older women (≥65 years old) undergoing surgery for POP.

METHODS

The selection of the preoperative assessments, primary outcome measures, and participant inclusion is described. Frailty and mobility measurements will be collected at the preoperative visit and include the 6 Robinson frailty measurements and the Timed Up and Go mobility test. The main outcome measure in the FASt supplemental study will be moderate to severe postoperative adverse events according to the Clavien-Dindo Severity Classification.

CONCLUSIONS

This trial will assess impact of preoperative age, multimorbidity, frailty, and decreased mobility on postoperative outcomes in older women (≥65 years old) undergoing surgical procedures for the correction of apical POP. Information from this trial may help both primary care providers and surgeons better advise/inform women on their individual risks of surgical complications and provide more comprehensive postoperative care to women at highest risk of complications.

Performance, acceptability, and validation of a phone application bowel diary

AIMS

To assess performance, acceptability, external validity, and reliability of a phone application electronic bowel diary (PFDN Bowel eDiary).

METHODS

Women reporting refractory accidental bowel leakage (ABL) were enrolled in a randomized, crossover trial evaluating paper versus eDiary documentation of bowel movements (BM) and fecal incontinence episodes (FIE). Events were characterized by the presence or absence of urgency and Bristol stool scale consistency. The eDiary entries were date/time stamped and prompted by twice-daily phone notifications. Women were randomized to complete up to three consecutive 14-day diaries in two sequences. Diary events were compared between formats using the Pearson correlation. System usability scale (SUS) assessed eDiary usability. The eDiary test-retest reliability was assessed with intraclass correlations (ICCs).

RESULTS

Paired diary data were available from 60/69 (87%) women 63.8 ± 9.8 years old with mean 13.2 BM per week and 6.5 FIE per week (nearly half with urgency). Among those providing diaries, adherence did not differ by paper or eDiary (93.3% vs. 95.0%). Notifications prompted 29.6% of eDiary entries, improving adherence from 70% to 95%. Paper and eDiaries were moderate to-strongly correlated for BMs per week (r = .61), urgency BMs per week (r = .76), FIE per week (r = .66), urgency FIE per week (r = .72). Test-retest reliability was good (ICC = .81 BMs per week, .79 urgency BMs per week, .74 FIE per week, and .62 urgency FIE per week). The mean SUS score was high, 82.3 ± 17.5 (range, 0-100) with 91.4% rating it easy to use, and 75.9% preferring the eDiary over paper.

CONCLUSION

The PFDN Bowel eDiary correlated well with paper diary was considered easy to use, preferred to paper diaries, had high rates of confirmed real-time diary completion that obviated staff data entry.

Methods for the defining mechanisms of anterior vaginal wall descent (DEMAND) study

INTRODUCTION AND HYPOTHESIS

The protocol and analysis methods for the Defining Mechanisms of Anterior Vaginal Wall Descent (DEMAND) study are presented. DEMAND was designed to identify mechanisms and contributors of prolapse recurrence after two transvaginal apical suspension procedures for uterovaginal prolapse.

METHODS

DEMAND is a supplementary cohort study of a clinical trial in which women with uterovaginal prolapse randomized to (1) vaginal hysterectomy with uterosacral ligament suspension or (2) vaginal mesh hysteropexy underwent pelvic magnetic resonance imaging (MRI) at 30-42 months post-surgery. Standardized protocols have been developed to systematize MRI examinations across multiple sites and to improve reliability of MRI measurements. Anatomical failure, based on MRI, is defined as prolapse beyond the hymen. Anatomic measures from co-registered rest, maximal strain, and post-strain rest (recovery) sequences are obtained from the "true mid-sagittal" plane defined by a 3D pelvic coordinate system. The primary outcome is the mechanism of failure (apical descent versus anterior vaginal wall elongation). Secondary outcomes include displacement of the vaginal apex and perineal body and elongation of the anterior wall, posterior wall, perimeter, and introitus of the vagina between (1) rest and strain and (2) rest and recovery.

RESULTS

Recruitment and MRI trials of 94 participants were completed by May 2018.

CONCLUSIONS

Methods papers which detail studies designed to evaluate anatomic outcomes of prolapse surgeries are few. We describe a systematic, standardized approach to define and quantitatively assess mechanisms of anatomic failure following prolapse repair. This study will provide a better understanding of how apical prolapse repairs fail anatomically.

Impact of treatment for fecal incontinence on constipation symptoms

OBJECTIVE

Defecatory symptoms, such as a sense of incomplete emptying and straining with bowel movements, are paradoxically present in women with fecal incontinence. Treatments for fecal incontinence, such as loperamide and biofeedback, can worsen or improve defecatory symptoms, respectively. The primary aim of this study was to compare changes in constipation symptoms in women undergoing treatment for fecal incontinence with education only, loperamide, anal muscle exercises with biofeedback or both loperamide and biofeedback. Our secondary aim was to compare changes in constipation symptoms among responders and nonresponders to fecal incontinence treatment.

STUDY DESIGN

This was a planned secondary analysis of a randomized controlled trial comparing 2 first-line therapies for fecal incontinence in a 2 × 2 factorial design. Women with at least monthly fecal incontinence and normal stool consistency were randomized to 4 groups: (1) oral placebo plus education only, (2) oral loperamide plus education only, (3) placebo plus anorectal manometry-assisted biofeedback, and (4) loperamide plus biofeedback. Defecatory symptoms were measured using the Patient Assessment of Constipation Symptoms questionnaire at baseline, 12 weeks, and 24 weeks. The Patient Assessment of Constipation Symptoms consists of 12 items that contribute to a global score and 3 subscales: stool characteristics/symptoms (hardness of stool, size of stool, straining, inability to pass stool), rectal symptoms (burning, pain, bleeding, incomplete bowel movement), and abdominal symptoms (discomfort, pain, bloating, cramps). Scores for each subscale as well as the global score range from 0 (no symptoms) to 4 (maximum score), with negative change scores representing improvement in defecatory symptoms. Responders to fecal incontinence treatment were defined as women with a minimally important clinical improvement of ≥5 points on the St Mark's (Vaizey) scale between baseline and 24 weeks. Intent-to-treat analysis was performed using a longitudinal mixed model, controlling for baseline scores, to estimate changes in Patient Assessment of Constipation Symptoms scores from baseline through 24 weeks.

RESULTS

At 24 weeks, there were small changes in Patient Assessment of Constipation Symptoms global scores in all 4 groups: oral placebo plus education (-0.3; 95% confidence interval, -0.5 to -0.1), loperamide plus education (-0.1, 95% confidence interval, -0.3 to0.0), oral placebo plus biofeedback (-0.3, 95% confidence interval, -0.4 to -0.2), and loperamide plus biofeedback (-0.3, 95% confidence interval, -0.4 to -0.2). No differences were observed in change in Patient Assessment of Constipation Symptoms scores between women randomized to placebo plus education and those randomized to loperamide plus education (P = .17) or placebo plus biofeedback (P = .82). Change in Patient Assessment of Constipation Symptoms scores in women randomized to combination loperamide plus biofeedback therapy was not different from that of women randomized to treatment with loperamide or biofeedback alone. Responders had greater improvement in Patient Assessment of Constipation Symptoms scores than nonresponders (-0.4; 95% confidence interval, -0.5 to -0.3 vs -0.2; 95% confidence interval, -0.3 to -0.0, P < .01, mean difference, 0.2, 95% confidence interval, 0.1-0.4).

CONCLUSION

Change in constipation symptoms following treatment of fecal incontinence in women are small and are not significantly different between groups. Loperamide treatment for fecal incontinence does not worsen constipation symptoms among women with normal consistency stool. Women with clinically significant improvement in fecal incontinence symptoms report greater improvement in constipation symptoms.

Outcomes of native tissue transvaginal apical approaches in women with advanced pelvic organ prolapse and stress urinary incontinence

INTRODUCTION AND HYPOTHESIS

Limited data exist comparing different surgical approaches in women with advanced vaginal prolapse. This study compared 2-year surgical outcomes of uterosacral ligament suspension (ULS) and sacrospinous ligament fixation (SSLF) in women with advanced prolapse (stage III-IV) and stress urinary incontinence.

METHODS

This was a secondary analysis of a multicenter 2 × 2 factorial randomized trial comparing (1) ULS versus SSLF and (2) behavioral therapy with pelvic floor muscle training versus usual care. Of 374 subjects, 117/188 (62.7%) in the ULS and 113/186 (60.7%) in the SSLF group had advanced prolapse. Two-year surgical success was defined by the absence of (1) apical descent > 1/3 into the vaginal canal, (2) anterior/posterior wall descent beyond the hymen, (3) bothersome bulge symptoms, and (4) retreatment for prolapse. Secondary outcomes included individual success outcome components, symptom severity measured by the Pelvic Organ Prolapse Distress Inventory, and adverse events. Outcomes were also compared in women with advanced prolapse versus stage II prolapse.

RESULTS

Success did not differ between groups (ULS: 58.2% [57/117] versus SSLF: 58.5% [55/113], aOR 1.0 [0.5-1.8]). No differences were detected in individual success components (p > 0.05 for all components). Prolapse symptom severity scores improved in both interventions with no intergroup differences (p = 0.82). Serious adverse events did not differ (ULS: 19.7% versus SSLF: 16.8%, aOR 1.2 [0.6-2.4]). Success was lower in women with advanced prolapse compared with stage II (58.3% versus 73.2%, aOR 0.5 [0.3-0.9]), with no retreatment in stage II.

CONCLUSIONS

Surgical success, symptom severity, and overall serious adverse events did not differ between ULS and SSLF in women with advanced prolapse. ClinicalTrials.gov Identifier: NCT01166373.

Achieved oxygen saturations and retinopathy of prematurity in extreme preterms

OBJECTIVE

To identify achieved oxygen saturations (SpO₂) associated with increased risk of severe retinopathy of prematurity (ROP).

DESIGN

This is a secondary analysis of the Surfactant Positive Airway Pressure and Pulse Oximetry Trial (SUPPORT)randomised controlled trial. SpO₂ was recorded up to 36 weeks' postmenstrual age. Saturations through 9 postnatal weeks were explored graphically, and logistic regression models were created to predict severe ROP.

SETTING

20 centres of the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network.

PATIENTS

984 surviving infants of 24-27 weeks' gestational age born in 2005-2009.

INTERVENTIONS

SUPPORT targeted SpO₂ to a lower (85%-89%) or higher (91%-95%) range through 36 weeks' postmenstrual age or off respiratory support.

MAIN OUTCOME MEASURES

Severe ROP defined as threshold ROP, ophthalmological surgery or bevacizumab treatment.

RESULTS

There were statistically significant interactions between duration of oxygen supplementation and percentage of time in certain achieved saturation ranges. Specifically, for infants who spent at least 2 weeks on oxygen in postnatal weeks 1-5, a higher percentage of time at 91%-96% SpO₂ was associated with increased odds of severe ROP. For infants who spent at least 3 weeks on oxygen in postnatal weeks 6-9, a higher percentage of time at 97%-100% SpO₂ was associated with increased odds of severe ROP. Other significant risk factors were lower gestational age and birth weight, non-Hispanic white versus black race, prospectively defined severe illness, late-onset sepsis or meningitis, and clinical centre.

CONCLUSIONS

Among extremely preterm survivors to discharge, the association between SpO₂ and severe ROP depended on the timing and duration of oxygen supplementation.

Defining the relationship between vaginal and urinary microbiomes

BACKGROUND

Although the vaginal and urinary microbiomes have been increasingly well-characterized in health and disease, few have described the relationship between these neighboring environments. Elucidating this relationship has implications for understanding how manipulation of the vaginal microbiome may affect the urinary microbiome and treatment of common urinary conditions.

OBJECTIVE

To describe the relationship between urinary and vaginal microbiomes using 16S rRNA gene sequencing. We hypothesized that the composition of the urinary and vaginal microbiomes would be significantly associated, with similarities in predominant taxa.

STUDY DESIGN

This multicenter study collected vaginal swabs and catheterized urine samples from 186 women with mixed urinary incontinence enrolled in a parent study and 84 similarly aged controls. Investigators decided a priori that if vaginal and/or urinary microbiomes differed between continent and incontinent women, the groups would be analyzed separately; if similar, samples from continent and incontinent women would be pooled and analyzed together. A central laboratory sequenced variable regions 1-3 (v1-3) and characterized bacteria to the genus level. Operational taxonomic unit abundance was described for paired vaginal and urine samples. Pearson's correlation characterized the relationship between individual operational taxonomic units of paired samples. Canonical correlation analysis evaluated the association between clinical variables (including mixed urinary incontinence and control status) and vaginal and urinary operational taxonomic units, using the Canonical correlation analysis function in the Vegan package (R version 3.5). Linear discriminant analysis effect size was used to find taxa that discriminated between vaginal and urinary samples.

RESULTS

Urinary and vaginal samples were collected from 212 women (mean age 53±11 years) and results from 197 paired samples were available for analysis. As operational taxonomic units in mixed urinary incontinence and control samples were related in canonical correlation analysis and since taxa did not discriminate between mixed urinary incontinence or controls in either vagina or urine, mixed urinary incontinence and control samples were pooled for further analysis. Canonical correlation analysis of vaginal and urinary samples indicated that that 60 of the 100 most abundant operational taxonomic units in the samples largely overlapped. Lactobacillus was the most abundant genus in both urine and vagina (contributing on average 53% to an individual's urine sample and 64% to an individual's vaginal sample) (Pearson correlation r=0.53). Although less abundant than Lactobacillus, other bacteria with high Pearson correlation coefficients also commonly found in vagina and urine included: Gardnerella (r=0.70), Prevotella (r=0.64), and Ureaplasma (r=0.50). Linear discriminant analysis effect size analysis identified Tepidimonas and Flavobacterium as bacteria that distinguished the urinary environment for both mixed urinary incontinence and controls as these bacteria were absent in the vagina (Tepidimonas effect size 2.38, P<.001, Flavobacterium effect size 2.15, P<.001). Although Lactobacillus was the most abundant bacteria in both urine and vagina, it was more abundant in the vagina (linear discriminant analysis effect size effect size 2.72, P<.001).

CONCLUSION

Significant associations between vaginal and urinary microbiomes were demonstrated, with Lactobacillus being predominant in both urine and vagina. Abundance of other bacteria also correlated highly between the vagina and urine. This inter-relatedness has implications for studying manipulation of the urogenital microbiome in treating conditions such as urgency urinary incontinence and urinary tract infections.

Effect of Behavioral and Pelvic Floor Muscle Therapy Combined With Surgery vs Surgery Alone on Incontinence Symptoms Among Women With Mixed Urinary Incontinence: The ESTEEM Randomized Clinical Trial

IMPORTANCE

Mixed urinary incontinence, including both stress and urgency incontinence, has adverse effects on a woman's quality of life. Studies evaluating treatments to simultaneously improve both components are lacking.

OBJECTIVE

To determine whether combining behavioral and pelvic floor muscle therapy with midurethral sling is more effective than sling alone for improving mixed urinary incontinence symptoms.

DESIGN, SETTING, AND PARTICIPANTS

Randomized clinical trial involving women 21 years or older with moderate or severe stress and urgency urinary incontinence symptoms for at least 3 months, and at least 1 stress and 1 urgency incontinence episode on a 3-day bladder diary. The trial was conducted across 9 sites in the United States, enrollment between October 2013 and April 2016; final follow-up October 2017.

INTERVENTIONS

Behavioral and pelvic floor muscle therapy (included 1 preoperative and 5 postoperative sessions through 6 months) combined with midurethral sling (n = 209) vs sling alone (n = 207).

MAIN OUTCOMES AND MEASURES

The primary outcome was change between baseline and 12 months in mixed incontinence symptoms measured by the Urogenital Distress Inventory (UDI) long form; range, 0 to 300 points; minimal clinically important difference, 35 points, with higher scores indicating worse symptoms.

RESULTS

Among 480 women randomized (mean [SD] age, 54.0 years [10.7]), 464 were eligible and 416 (86.7%) had postbaseline outcome data and were included in primary analyses. The UDI score in the combined group significantly decreased from 178.0 points at baseline to 30.7 points at 12 months, adjusted mean change -128.1 points (95% CI, -146.5 to -109.8). The UDI score in the sling-only group significantly decreased from 176.8 to 34.5 points, adjusted mean change -114.7 points (95% CI, -133.3 to -96.2). The model-estimated between-group difference (-13.4 points; 95% CI, -25.9 to -1.0; P = .04) did not meet the minimal clinically important difference threshold. Related and unrelated serious adverse events occurred in 10.2% of the participants (8.7% combined and 11.8% sling only).

CONCLUSIONS AND RELEVANCE

Among women with mixed urinary incontinence, behavioral and pelvic floor muscle therapy combined with midurethral sling surgery compared with surgery alone resulted in a small statistically significant difference in urinary incontinence symptoms at 12 months that did not meet the prespecified threshold for clinical importance.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT01959347.

The Diagnosis of Bronchopulmonary Dysplasia in Very Preterm Infants. An Evidence-based Approach

Rationale: Current diagnostic criteria for bronchopulmonary dysplasia rely heavily on the level and duration of oxygen therapy, do not reflect contemporary neonatal care, and do not adequately predict childhood morbidity.Objectives: To determine which of 18 prespecified, revised definitions of bronchopulmonary dysplasia that variably define disease severity according to the level of respiratory support and supplemental oxygen administered at 36 weeks' postmenstrual age best predicts death or serious respiratory morbidity through 18-26 months' corrected age.Methods: We assessed infants born at less than 32 weeks of gestation between 2011 and 2015 at 18 centers of the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network.Measurements and Main Results: Of 2,677 infants, 683 (26%) died or developed serious respiratory morbidity. The diagnostic criteria that best predicted this outcome defined bronchopulmonary dysplasia according to treatment with the following support at 36 weeks' postmenstrual age, regardless of prior or current oxygen therapy: no bronchopulmonary dysplasia, no support (n = 773); grade 1, nasal cannula ≤2 L/min (n = 1,038); grade 2, nasal cannula >2 L/min or noninvasive positive airway pressure (n = 617); and grade 3, invasive mechanical ventilation (n = 249). These criteria correctly predicted death or serious respiratory morbidity in 81% of study infants. Rates of this outcome increased stepwise from 10% among infants without bronchopulmonary dysplasia to 77% among those with grade 3 disease. A similar gradient (33-79%) was observed for death or neurodevelopmental impairment.Conclusions: The definition of bronchopulmonary dysplasia that best predicted early childhood morbidity categorized disease severity according to the mode of respiratory support administered at 36 weeks' postmenstrual age, regardless of supplemental oxygen use.

Controlling faecal incontinence in women by performing anal exercises with biofeedback or loperamide: a randomised clinical trial

BACKGROUND

Well designed, large comparative effectiveness trials assessing the efficacy of primary interventions for faecal incontinence are few in number. The objectives of this study were to compare different combinations of anorectal manometry-assisted biofeedback, loperamide, education, and oral placebo.

METHODS

In this randomised factorial trial, participants were recruited from eight clinical sites in the USA. Women with at least one episode of faecal incontinence per month in the past 3 months were randomly assigned 0·5:1:1:1 to one of four groups: oral placebo plus education only, placebo plus anorectal manometry-assisted biofeedback, loperamide plus education only, and loperamide plus anorectal manometry-assisted biofeedback. Participants received 2 mg per day of loperamide or oral placebo with the option of dose escalation or reduction. Women assigned to biofeedback received six visits, including strength and sensory biofeedback training. All participants received a standardised faecal incontinence patient education pamphlet and were followed for 24 weeks after starting treatment. The primary endpoint was change in St Mark's (Vaizey) faecal incontinence severity score between baseline and 24 weeks, analysed by intention-to-treat using general linear mixed modelling. Investigators, interviewers, and outcome evaluators were masked to biofeedback assignment. Participants and all study staff other than the research pharmacist were masked to medication assignment. Randomisation took place within the electronic data capture system, was stratified by site using randomly permuted blocks (block size 7), and the sizes of the blocks and the allocation sequence were known only to the data coordinating centre. This trial is registered with ClinicalTrials.gov, number NCT02008565.

FINDINGS

Between April 1, 2014, and Sept 30, 2015, 377 women were enrolled, of whom 300 were randomly assigned to placebo plus education (n=42), placebo plus biofeedback (n=84), loperamide plus education (n=88), and the combined intervention of loperamide plus biofeedback (n=86). At 24 weeks, there were no differences between loperamide versus placebo (model estimated score change -1·5 points, 95% CI -3·4 to 0·4, p=0·12), biofeedback versus education (-0·7 points, -2·6 to 1·2, p=0·47), and loperamide and biofeedback versus placebo and biofeedback (-1·9 points, -4·1 to 0·3, p=0·092) or versus loperamide plus education (-1·1 points, -3·4 to 1·1, p=0·33). Constipation was the most common grade 3 or higher adverse event and was reported by two (2%) of 86 participants in the loperamide and biofeedback group and two (2%) of 88 in the loperamide plus education group. The percentage of participants with any serious adverse events did not differ between the treatment groups. Only one serious adverse event was considered related to treatment (small bowel obstruction in the placebo and biofeedback group).

INTERPRETATION

In women with normal stool consistency and faecal incontinence bothersome enough to seek treatment, we were unable to find evidence against the null hypotheses that loperamide is equivalent to placebo, that anal exercises with biofeedback is equivalent to an educational pamphlet, and that loperamide and biofeedback are equivalent to oral placebo and biofeedback or loperamide plus an educational pamphlet. Because these are common first-line treatments for faecal incontinence, clinicians could consider combining loperamide, anal manometry-assisted biofeedback, and a standard educational pamphlet, but this is likely to result in only negligible improvement over individual therapies and patients should be counselled regarding possible constipation.

FUNDING

Eunice Kennedy Shriver National Institute of Child Health and Human Development and the National Institutes of Health Office of Research on Women's Health.

Pain and activity after vaginal reconstructive surgery for pelvic organ prolapse and stress urinary incontinence

BACKGROUND

Little is known about short- and long-term pain and functional activity after surgery for pelvic organ prolapse.

OBJECTIVE

The objectives of the study were to describe postoperative pain and functional activity after transvaginal native tissue reconstructive surgery with apical suspension and retropubic synthetic midurethral sling and to compare these outcomes between patients receiving 2 common transvaginal prolapse repairs, uterosacral ligament, and sacrospinous ligament vaginal vault suspension.

STUDY DESIGN

This planned secondary analysis of a 2 × 2 factorial randomized trial included 374 women randomized to receive uterosacral (n = 188) or sacrospinous (n = 186) vaginal vault suspension to treat both stages 2-4 apical vaginal prolapse and stress urinary incontinence between 2008 and 2013 at 9 medical centers. Participants were also randomized to receive perioperative pelvic muscle therapy or usual care. All patients received transvaginal native tissue repairs and a midurethral sling. Participants completed the Surgical Pain Scales (0-10 numeric rating scales; higher scores = greater pain) and Activity Assessment Scale (0-100; higher score = higher activity) prior to surgery and at 2 weeks, 4-6 weeks, and 3 months postoperatively. The MOS 36-item Short-Form Health Survey was completed at baseline and 6, 12, and 24 months after surgery; the bodily pain, physical functioning, and role-physical subscales were used for this analysis (higher scores = less disability). Self-reported pain medication use was also collected.

RESULTS

Before surgery, average pain at rest and during normal activity were (adjusted mean ± SE) 2.24 ± 0.23 and 2.76 ± 0.25; both increased slightly from baseline at 2 weeks (+0.65, P = .004, and +0.74, P = .007, respectively) and then decreased below baseline at 3 months (-0.87 and -1.14, respectively, P < .001), with no differences between surgical groups. Pain during exercise/strenuous activity and worst pain decreased below baseline levels at 4-6 weeks (-1.26, P = .014, and -0.95, P = .002) and 3 months (-1.97 and -1.50, P < .001) without differences between surgical groups. Functional activity as measured by the Activity Assessment Scale improved from baseline at 4-6 weeks (+9.24, P < .001) and 3 months (+13.79, P < .001). The MOS 36-item Short-Form Health Survey Bodily Pain, Physical Functioning, and Role-Physical Scales demonstrated significant improvements from baseline at 6, 12, and 24 months (24 months: +5.62, +5.79, and +4.72, respectively, P < .001 for each) with no differences between groups. Use of narcotic pain medications was reported by 14.3% of participants prior to surgery and 53.7% at 2 and 26.1% at 4-6 weeks postoperatively; thereafter use was similar to baseline rates until 24 months when it decreased to 6.8%. Use of nonnarcotic pain medication was reported by 48.1% of participants prior to surgery, 68.7% at 2 weeks, and similar to baseline at 3 months; thereafter use dropped steadily to 26.6% at 2 years. Uterosacral ligament suspension resulted in less new or worsening buttock pain than sacrospinous suspension at 4-6 weeks postoperatively (4.6% vs 10.5%, P = .043) but no difference in groin or thigh pain.

CONCLUSION

Pain and functional activity improve for up to 2 years after native tissue reconstructive surgery with uterosacral or sacrospinous vaginal vault suspension and midurethral sling for stages 2-4 pelvic organ prolapse. On average, immediate postoperative pain is low and improves to below baseline levels by 4-6 weeks.

Neurodevelopmental Outcomes of Preterm Infants With Retinopathy of Prematurity by Treatment

OBJECTIVE

Among extremely preterm infants, we evaluated whether bevacizumab therapy compared with surgery for retinopathy of prematurity (ROP) is associated with adverse outcomes in early childhood.

METHODS

This study was a retrospective analysis of prospectively collected data on preterm (22-26 + 6/7 weeks' gestational age) infants admitted to the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network centers who received bevacizumab or surgery exclusively for ROP. The primary outcome was death or severe neurodevelopmental impairment (NDI) at 18 to 26 months' corrected age (Bayley Scales of Infant and Toddler Development, Third Edition cognitive or motor composite score <70, Gross Motor Functional Classification Scale level ≥2, bilateral blindness or hearing impairment).

RESULTS

The cohort (N = 405; 214 [53%] boys; median [interquartile range] gestational age: 24.6 [23.9-25.3] weeks) included 181 (45%) infants who received bevacizumab and 224 (55%) who underwent ROP surgery. Infants treated with bevacizumab had a lower median (interquartile range) birth weight (640 [541-709] vs 660 [572.5-750] g; P = .02) and longer durations of conventional ventilation (35 [21-58] vs 33 [18-49] days; P = .04) and supplemental oxygen (112 [94-120] vs 105 [84.5-120] days; P = .01). Death or severe NDI (adjusted odds ratio [aOR] 1.42; 95% confidence interval [CI] 0.94 to 2.14) and severe NDI (aOR 1.14; 95% CI 0.76 to 1.70) did not differ between groups. Odds of death (aOR 2.54 [95% CI 1.42 to 4.55]; P = .002), a cognitive score <85 (aOR 1.78 [95% CI 1.09 to 2.91]; P = .02), and a Gross Motor Functional Classification Scale level ≥2 (aOR 1.73 [95% CI 1.04 to 2.88]; P = .04) were significantly higher with bevacizumab therapy.

CONCLUSIONS

In this multicenter cohort of preterm infants, ROP treatment modality was not associated with differences in death or NDI, but the bevacizumab group had higher mortality and poor cognitive outcomes in early childhood. These data reveal the need for a rigorous appraisal of ROP therapy.

Recruitment and retention: A randomized controlled trial of video-enhanced versus standard consent processes within the E-OPTIMAL study

BACKGROUND/AIMS

In this study, we compared two research consent techniques: a standardized video plus usual consent and usual consent alone.

METHODS

Individuals who completed 24-month outcomes (completers) in the Operations and Pelvic Muscle Training in the Management of Apical Support Loss study were invited to participate in an extended, longitudinal follow-up study (extended Operations and Pelvic Muscle Training in the Management of Apical Support Loss). Potential participants who were (1) able to provide consent and (2) not in long-term care facilities were randomized 1:1 to a standardized video detailing the importance of long-term follow-up studies of pelvic floor disorders followed by the usual institutional consent process versus the usual consent process alone. Randomization, stratified by site, used randomly permuted blocks. The primary outcome was the proportion of participants who enrolled in the extended study and completed data collection events 5 years after surgery. Secondary outcomes included the proportion enrolled in the extended study, completion of follow-up at each study year, completion of data collection points, completion of in-person visits, and completion of quality of life calls. Motivation and barriers to enrollment (study-level and personal-level) and satisfaction with the study consent process were measured by questionnaire prior to recruitment into extended Operations and Pelvic Muscle Training in the Management of Apical Support Loss. Groups were compared using an intention-to-treat principle, using unadjusted Student's t-test (continuous) and chi-square or Fisher's exact (categorical) test. A sample size of 340 (170/group) was estimated to detect a 15% difference in enrollment and study completion between groups with p < 0.05.

RESULTS

Of the 327 Operations and Pelvic Muscle Training in the Management of Apical Support Loss completers, 305 were randomized to the consent process study (153 video vs 152 no video). Groups were similar in demographics, surgical treatment, and outcomes. The overall rate of extended study enrollment was high, without significant differences between groups (video 92.8% vs no video 94.1%, p = 0.65). There were no significant differences in the primary outcome (video 79.1% vs no video 75.7%, p = 0.47) or in any secondary outcomes. Being "very satisfied" overall with study information (97.7% vs 88.5%, p = 0.01); "strong agreement" for feeling informed about the study (81.3% vs 70.8%, p = 0.06), understanding the study purpose (83.6% vs 71.0%, p = 0.02), nature and extent (82.8% vs 70.2%, p = 0.02), and potential societal benefits (82.8% vs 67.9%, p = 0.01); and research coordinator/study nurse relationship being "very important" (72.7% vs 63.4%, p = 0.03) were better in the video compared to the no video consent group.

CONCLUSION

The extended study had high enrollment; most participants completed most study tasks during the 3-year observational extension, regardless of the use of video to augment research consent. The video was associated with a higher proportion of participants reporting improved study understanding and relationship with study personnel.

The urinary microbiome in women with mixed urinary incontinence compared to similarly aged controls

INTRODUCTION & HYPOTHESIS

Previous studies have suggested that women with urinary incontinence have an altered urinary microbiome. We hypothesized that the microbiome in women with mixed urinary incontinence (MUI) differed from controls and tested this hypothesis using bacterial gene sequencing techniques.

METHODS

This multicenter study compared the urinary microbiome in women with MUI and similarly aged controls. Catheterized urine samples were obtained; v4-6 regions of the 16S rRNA gene were sequenced to identify bacteria. Bacterial predominance (> 50% of an individual's genera) was compared between MUI and controls. Bacterial sequences were categorized into "community types" using Dirichlet multinomial mixture (DMM) methods. Generalized linear mixed models predicted MUI/control status based on clinical characteristics and community type. Post-hoc analyses were performed in women < 51 and ≥ 51 years. Sample size estimates required 200 samples to detect a 20% difference in Lactobacillus predominance with P < 0.05.

RESULTS

Of 212 samples, 97.6% were analyzed (123 MUI/84 controls, mean age 53 ± 11 years). Overall Lactobacillus predominance did not differ between MUI and controls (45/123 = 36.6% vs. 36/84 = 42.9%, P = 0.36). DMM analyses revealed six community types; communities differed by age (P = 0.001). A High-Lactobacillus (89.2% Lactobacillus) community had a greater proportion of controls (19/84 = 22.6%, MUI 11/123 = 8.9%). Overall, bacterial community types did not differ in MUI and controls. However, post-hoc analysis of women < 51 years found that bacterial community types distinguished MUI from controls (P = 0.041); Moderate-Lactobacillus (aOR 7.78, CI 1.85-32.62) and Mixed (aOR 7.10, CI 1.32-38.10) community types were associated with MUI. Community types did not differentiate MUI and controls in women ≥ 51 years (P = 0.94).

CONCLUSIONS

Women with MUI and controls did not differ in overall Lactobacillus predominance. In younger women, urinary bacterial community types differentiated MUI from controls.

Association Between Oxygen Saturation Targeting and Death or Disability in Extremely Preterm Infants in the Neonatal Oxygenation Prospective Meta-analysis Collaboration

IMPORTANCE

There are potential benefits and harms of hyperoxemia and hypoxemia for extremely preterm infants receiving more vs less supplemental oxygen.

OBJECTIVE

To compare the effects of different target ranges for oxygen saturation as measured by pulse oximetry (Spo2) on death or major morbidity.

DESIGN, SETTING, AND PARTICIPANTS

Prospectively planned meta-analysis of individual participant data from 5 randomized clinical trials (conducted from 2005-2014) enrolling infants born before 28 weeks' gestation.

EXPOSURES

Spo2 target range that was lower (85%-89%) vs higher (91%-95%).

MAIN OUTCOMES AND MEASURES

The primary outcome was a composite of death or major disability (bilateral blindness, deafness, cerebral palsy diagnosed as ≥2 level on the Gross Motor Function Classification System, or Bayley-III cognitive or language score <85) at a corrected age of 18 to 24 months. There were 16 secondary outcomes including the components of the primary outcome and other major morbidities.

RESULTS

A total of 4965 infants were randomized (2480 to the lower Spo2 target range and 2485 to the higher Spo2 range) and had a median gestational age of 26 weeks (interquartile range, 25-27 weeks) and a mean birth weight of 832 g (SD, 190 g). The primary outcome occurred in 1191 of 2228 infants (53.5%) in the lower Spo2 target group and 1150 of 2229 infants (51.6%) in the higher Spo2 target group (risk difference, 1.7% [95% CI, -1.3% to 4.6%]; relative risk [RR], 1.04 [95% CI, 0.98 to 1.09], P = .21). Of the 16 secondary outcomes, 11 were null, 2 significantly favored the lower Spo2 target group, and 3 significantly favored the higher Spo2 target group. Death occurred in 484 of 2433 infants (19.9%) in the lower Spo2 target group and 418 of 2440 infants (17.1%) in the higher Spo2 target group (risk difference, 2.8% [95% CI, 0.6% to 5.0%]; RR, 1.17 [95% CI, 1.04 to 1.31], P = .01). Treatment for retinopathy of prematurity was administered to 220 of 2020 infants (10.9%) in the lower Spo2 target group and 308 of 2065 infants (14.9%) in the higher Spo2 target group (risk difference, -4.0% [95% CI, -6.1% to -2.0%]; RR, 0.74 [95% CI, 0.63 to 0.86], P < .001). Severe necrotizing enterocolitis occurred in 227 of 2464 infants (9.2%) in the lower Spo2 target group and 170 of 2465 infants (6.9%) in the higher Spo2 target group (risk difference, 2.3% [95% CI, 0.8% to 3.8%]; RR, 1.33 [95% CI, 1.10 to 1.61], P = .003).

CONCLUSIONS AND RELEVANCE

In this prospectively planned meta-analysis of individual participant data from extremely preterm infants, there was no significant difference between a lower Spo2 target range compared with a higher Spo2 target range on the primary composite outcome of death or major disability at a corrected age of 18 to 24 months. The lower Spo2 target range was associated with a higher risk of death and necrotizing enterocolitis, but a lower risk of retinopathy of prematurity treatment.

Perioperative Behavioral Therapy and Pelvic Muscle Strengthening Do Not Enhance Quality of Life After Pelvic Surgery: Secondary Report of a Randomized Controlled Trial

BACKGROUND

There is significant need for trials evaluating the long-term effectiveness of a rigorous program of perioperative behavioral therapy with pelvic floor muscle training (BPMT) in women undergoing transvaginal reconstructive surgery for prolapse.

OBJECTIVE

The purpose of this study was to evaluate the effect of perioperative BPMT on health-related quality of life (HRQOL) and sexual function following vaginal surgery for pelvic organ prolapse (POP) and stress urinary incontinence (SUI).

DESIGN

This study is a secondary report of a 2 × 2 factorial randomized controlled trial.

SETTING

This study was a multicenter trial.

PARTICIPANTS

Participants were adult women with stage 2-4 POP and SUI.

INTERVENTION

Perioperative BPMT versus usual care and sacrospinous ligament fixation (SSLF) versus uterosacral ligament suspension (ULS) were provided.

MEASUREMENTS

Participants undergoing transvaginal surgery (SSLF or ULS for POP and a midurethral sling for SUI) received usual care or five perioperative BPMT visits. The primary outcome was change in body image and in Pelvic Floor Impact Questionnaire (PFIQ) short-form subscale, 36-item Short-Form Health Survey (SF-36), Pelvic Organ Prolapse-Urinary Incontinence Sexual Questionnaire short form (PISQ-12), Patient Global Impression of Improvement (PGII), and Brink scores.

RESULTS

The 374 participants were randomized to BPMT (n = 186) and usual care (n = 188). Outcomes were available for 137 (74%) of BPMT participants and 146 (78%) of the usual care participants at 24 months. There were no statistically significant differences between groups in PFIQ, SF-36, PGII, PISQ-12, or body image scale measures.

LIMITATIONS

The clinicians providing BPMT had variable expertise. Findings might not apply to vaginal prolapse procedures without slings or abdominal apical prolapse procedures.

CONCLUSIONS

Perioperative BPMT performed as an adjunct to vaginal surgery for POP and SUI provided no additional improvement in QOL or sexual function compared with usual care.

Growth Outcomes of Preterm Infants Exposed to Different Oxygen Saturation Target Ranges from Birth

OBJECTIVE

To test whether infants randomized to a lower oxygen saturation (peripheral capillary oxygen saturation [SpO2]) target range while on supplemental oxygen from birth will have better growth velocity from birth to 36 weeks postmenstrual age (PMA) and less growth failure at 36 weeks PMA and 18-22 months corrected age.

STUDY DESIGN

We evaluated a subgroup of 810 preterm infants from the Surfactant, Positive Pressure, and Oxygenation Randomized Trial, randomized at birth to lower (85%-89%, n = 402, PMA 26 ± 1 weeks, birth weight 839 ± 186 g) or higher (91%-95%, n = 408, PMA 26 ± 1 weeks, birth weight 840 ± 191 g) SpO2 target ranges. Anthropometric measures were obtained at birth, postnatal days 7, 14, 21, and 28; then at 32 and 36 weeks PMA; and 18-22 months corrected age. Growth velocities were estimated with the exponential method and analyzed with linear mixed models. Poor growth outcome, defined as weight <10th percentile at 36 weeks PMA and 18-22 months corrected age, was compared across the 2 treatment groups by the use of robust Poisson regression.

RESULTS

Growth outcomes including growth at 36 weeks PMA and 18-22 months corrected age, as well as growth velocity were similar in the lower and higher SpO2 target groups.

CONCLUSION

Targeting different oxygen saturation ranges between 85% and 95% from birth did not impact growth velocity or reduce growth failure in preterm infants.

Controlling anal incontinence in women by performing anal exercises with biofeedback or loperamide (CAPABLe) trial: Design and methods

The goals of this trial are to determine the efficacy and safety of two treatments for women experiencing fecal incontinence. First, we aim to compare the use of loperamide to placebo and second, to compare the use of anal sphincter exercises with biofeedback to usual care. The primary outcome is the change from baseline in the St. Mark's (Vaizey) Score 24weeks after treatment initiation. As a Pelvic Floor Disorders Network (PFDN) trial, subjects are enrolling from eight PFDN clinical centers across the United States. A centralized data coordinating center supervises data collection and analysis. These two first-line treatments for fecal incontinence are being investigated simultaneously using a two-by-two randomized factorial design: a medication intervention (loperamide versus placebo) and a pelvic floor strength and sensory training intervention (anal sphincter exercises with manometry-assisted biofeedback versus usual care using an educational pamphlet). Interventionists providing the anal sphincter exercise training with biofeedback have received standardized training and assessment. Symptom severity, diary, standardized anorectal manometry and health-related quality of life outcomes are assessed using validated instruments administered by researchers masked to randomized interventions. Cost effectiveness analyses will be performed using prospectively collected data on care costs and resource utilization. This article describes the rationale and design of this randomized trial, focusing on specific research concepts of interest to researchers in the field of female pelvic floor disorders and all other providers who care for patients with fecal incontinence.

Change in practice after the Surfactant, Positive Pressure and Oxygenation Randomised Trial

OBJECTIVE

To test the hypothesis that the proportion of endotracheal intubation (ETI) in the delivery room (DR) decreased in Neonatal Research Network (NRN) centres after the National Institute of Child Health and Human Development NRN Surfactant, Positive Pressure, and Oxygenation Randomised Trial (SUPPORT).

DESIGN

Retrospective cohort study using the prospective NRN generic database.

SETTING

Eleven centres that participated in the SUPPORT trial and remained part of the NRN. Preterm neonates 24(0/7)-27(6/7) weeks' gestational age enrolled in the SUPPORT trial were randomised to: (1) DR continuous positive airway pressure or DR ETI with early surfactant administration; and (2) oxygen saturation targets of 85-89% or 91-95%. The prior NRN feasibility trial had assessed the feasibility of randomisation to continuous positive airway pressure versus ETI.

PATIENTS

Infants 24(0/7)-27(6/7) weeks' gestational age, excluding infants with syndromes or major malformations and those on comfort care only.

MAIN OUTCOME MEASURE

Proportion of DR ETI.

RESULTS

The proportion of DR ETI decreased significantly in the group of infants from centres that had not participated in the feasibility trial (91% before vs 75% after SUPPORT, adjusted relative risk 0.86, 95% CI 0.83-0.89, p<0.0001) but not in the group of infants from the other centres, where the proportion of ETI was already lower prior to initiation of the SUPPORT trial (61% before vs 58% after SUPPORT, adjusted relative risk 0.96, 95% CI 0.89 to 1.05, p=0.40).

CONCLUSION

This study shows that DR ETI changed after SUPPORT only in NRN centres that had not participated in a similar trial.

TRIAL REGISTRATION NUMBER

NCT00063063 (GDB) and NCT00233324 (SUPPORT).

Respiratory outcomes of the surfactant positive pressure and oximetry randomized trial (SUPPORT)

OBJECTIVE

To explore the early childhood pulmonary outcomes of infants who participated in the National Institute of Child Health and Human Development's Surfactant Positive Airway Pressure and Pulse Oximetry Randomized Trial (SUPPORT), using a factorial design that randomized extremely preterm infants to lower vs higher oxygen saturation targets and delivery room continuous positive airway pressure (CPAP) vs intubation/surfactant.

STUDY DESIGN

The Breathing Outcomes Study, a prospective secondary study to the Surfactant Positive Airway Pressure and Pulse Oximetry Randomized Trial, assessed respiratory morbidity at 6-month intervals from hospital discharge to 18-22 months corrected age (CA). Two prespecified primary outcomes-wheezing more than twice per week during the worst 2-week period and cough longer than 3 days without a cold-were compared for each randomized intervention.

RESULTS

One or more interviews were completed for 918 of the 922 eligible infants. The incidences of wheezing and cough were 47.9% and 31.0%, respectively, and did not differ between the study arms of either randomized intervention. Infants randomized to lower vs higher oxygen saturation targets had a similar risk of death or respiratory morbidity (except for croup and treatment with oxygen or diuretics at home). Infants randomized to CPAP vs intubation/surfactant had fewer episodes of wheezing without a cold (28.9% vs 36.5%; P<.05), respiratory illnesses diagnosed by a doctor (47.7% vs 55.2%; P<.05), and physician or emergency room visits for breathing problems (68.0% vs 72.9%; P<.05) by 18-22 months CA.

CONCLUSION

Treatment with early CPAP rather than intubation/surfactant is associated with less respiratory morbidity by 18-22 months CA. Longitudinal assessment of pulmonary morbidity is necessary to fully evaluate the potential benefits of respiratory interventions for neonates.

Evaluating retinopathy of prematurity screening guidelines for 24- to 27-week gestational age infants

OBJECTIVE

To determine whether current retinopathy of prematurity (ROP) screening guidelines adequately identify treatable ROP in a contemporary cohort of extremely low gestation infants.

STUDY DESIGN

Data from the Surfactant, Positive Pressure, and Pulse Oximetry Randomized Trial were used. Inborn infants of 24 (0)/7 to 27 (6)/7 weeks gestational age (GA) with consent before delivery were enrolled in 2005 to 2009. Severe ROP (type 1 ROP or treatment with laser, cryotherapy or bevacizumab) or death was the primary outcome for the randomized trial. Examinations followed the then current AAP (American Academy of Pediatrics) screening recommendations, beginning by 31 to 33 weeks postmenstrual age (PMA).

RESULT

One thousand three hundred and sixteen infants were enrolled in the trial. Nine hundred and ninety-seven of the 1121 who survived to first eye exam had final ROP outcome determined. One hundred and thirty-seven (14% of 997) met criteria for severe ROP and 128 (93%) of those had sufficient data (without missing or delayed exams) to determine age of onset of severe ROP. PMA at onset was 32.1 to 53.1 weeks. In this referral center cohort, 1.4% (14/997) developed severe ROP after discharge.

CONCLUSION

Our contemporary data support the 2013 AAP screening guidelines for ROP for infants of 24 (0)/7 to 27 (6)/7 weeks GA. Some infants do not meet treatment criteria until after discharge home. Post-discharge follow-up of infants who are still at risk for severe ROP is crucial for timely detection and treatment.

Comparison of 2 transvaginal surgical approaches and perioperative behavioral therapy for apical vaginal prolapse: the OPTIMAL randomized trial

IMPORTANCE

More than 300,000 surgeries are performed annually in the United States for pelvic organ prolapse. Sacrospinous ligament fixation (SSLF) and uterosacral ligament suspension (ULS) are commonly performed transvaginal surgeries to correct apical prolapse. Little is known about their comparative efficacy and safety, and it is unknown whether perioperative behavioral therapy with pelvic floor muscle training (BPMT) improves outcomes of prolapse surgery.

OBJECTIVE

To compare outcomes between (1) SSLF and ULS and (2) perioperative BPMT and usual care in women undergoing surgery for vaginal prolapse and stress urinary incontinence.

DESIGN, SETTING, AND PARTICIPANTS

Multicenter, 2 × 2 factorial, randomized trial of 374 women undergoing surgery to treat both apical vaginal prolapse and stress urinary incontinence was conducted between 2008 and 2013 at 9 US medical centers. Two-year follow-up rate was 84.5%.

INTERVENTIONS

The surgical intervention was transvaginal surgery including midurethral sling with randomization to SSLF (n = 186) or ULS (n = 188); the behavioral intervention was randomization to receive perioperative BPMT (n = 186) or usual care (n = 188).

MAIN OUTCOMES AND MEASURES

The primary outcome for the surgical intervention (surgical success) was defined as (1) no apical descent greater than one-third into vaginal canal or anterior or posterior vaginal wall beyond the hymen (anatomic success), (2) no bothersome vaginal bulge symptoms, and (3) no re-treatment for prolapse at 2 years. For the behavioral intervention, primary outcome at 6 months was urinary symptom scores (Urinary Distress Inventory; range 0-300, higher scores worse), and primary outcomes at 2 years were prolapse symptom scores (Pelvic Organ Prolapse Distress Inventory; range 0-300, higher scores worse) and anatomic success.

RESULTS

At 2 years, surgical group was not significantly associated with surgical success rates (ULS, 59.2% [93/157] vs SSLF, 60.5% [92/152]; unadjusted difference, -1.3%; 95% CI, -12.2% to 9.6%; adjusted odds ratio [OR], 0.9; 95% CI, 0.6 to 1.5) or serious adverse event rates (ULS, 16.5% [31/188] vs SSLF, 16.7% [31/186]; unadjusted difference, -0.2%; 95% CI, -7.7% to 7.4%; adjusted OR, 0.9; 95% CI, 0.5 to 1.6). Perioperative BPMT was not associated with greater improvements in urinary scores at 6 months (adjusted treatment difference, -6.7; 95% CI, -19.7 to 6.2), prolapse scores at 24 months (adjusted treatment difference, -8.0; 95% CI, -22.1 to 6.1), or anatomic success at 24 months.

CONCLUSIONS AND RELEVANCE

Two years after vaginal surgery for prolapse and stress urinary incontinence, neither ULS nor SSLF was significantly superior to the other for anatomic, functional, or adverse event outcomes. Perioperative BPMT did not improve urinary symptoms at 6 months or prolapse outcomes at 2 years.

TRIAL REGISTRATION

clinicaltrials.gov Identifier: NCT00597935.

Sequential screening for psychosocial and behavioural risk during pregnancy in a population of urban African Americans

OBJECTIVE

Screening for psychosocial and behavioural risks, such as depression, intimate partner violence, and smoking, during pregnancy is considered to be state of the art in prenatal care. This prospective longitudinal analysis examines the added benefit of repeated screening, compared with a single screening, in identifying such risks during pregnancy.

DESIGN

Data were collected as part of a randomised controlled trial to address intimate partner violence, depression, smoking, and environmental tobacco smoke exposure in African American women.

SETTING

Prenatal care sites in the District of Columbia serving mainly women of minority background.

POPULATION

A cohort of 1044 African American pregnant women in the District of Columbia.

METHODS

Mothers were classified by their initial response (acknowledgement of risks), and these data were updated during pregnancy. Risks were considered new if they were not previously reported. Standard hypothesis tests and logistic regression were used to predict the acknowledgment of any new risk(s) during pregnancy.

MAIN OUTCOME MEASURES

New risks: psychosocial variables to understand what factors might help identify the acknowledgement of additional risk(s).

RESULTS

Repeated screening identified more mothers acknowledging risk over time. Reported smoking increased by 11%, environmental tobacco smoke exposure increased by 19%, intimate partner violence increased by 9%, and depression increased by 20%. The psychosocial variables collected at the baseline that were entered into the logistic regression model included relationship status, education, Medicaid, illicit drug use, and alcohol use during pregnancy. Among these, only education less than high school was associated with the acknowledgement of new risk in the bivariate analyses, and significantly predicted the identification of new risks (OR 1.39, 95% CI 1.01-1.90).

CONCLUSIONS

It is difficult to predict early on who will acknowledge new risks over the course of pregnancy, and thus all women should be screened repeatedly to allow for the identification of risks and intervention during prenatal care.

A randomized clinical trial of trans-dermal nicotine replacement in pregnant African-American smokers

We compared acceptability, adherence and efficacy of trans-dermal nicotine patches and cognitive behavioral therapy (Group 1) to cognitive behavioral therapy alone (Group 2) in minority pregnant smokers. This is a randomized controlled trial. 52 women were recruited during pregnancy with a mean gestational age 18.5 ± 5.0 weeks and followed through delivery. Randomization was by site and initial cotinine levels. Interventionists and interviewers were blinded to group assignment. Two different nicotine replacement therapy dosing regiments were administered according to the baseline salivary cotinine level. A process evaluation model summarized patient adherence. The main outcome measure was self-report of cessation since last visit, confirmed by exhaled carbon monoxide. Analyses of categorical and continuous measures were conducted as well as linear trend tests of salivary cotinine levels. Women lost to follow-up were considered treatment failures. Participants were on average 27.5 ± 5.4 years old, 81 % were single, 69 % unemployed and 96 % were Medicaid eligible. A process evaluation indicated patients in both groups were adherent to scheduled program procedures through Visit 4, but not for Visits 5 and 6. Confirmed quit rates were: at visit 3, 23 (Group 1) and 0 % (Group 2) (p = 0.02); at visits 4 and 5, no difference; at visit 6, 19 (Group 1) and 0 % (Group 2) (p = 0.05). Group 1 delivered infants with a mean gestational age of 39.4 weeks versus 38.4 weeks in Group 2 (p = 0.02). 73 % (52/71) of the eligible smokers agreed to participate and 65 % (17/26) of Group 1 completed the protocol (i.e. attended 6 visits). A comparison of Group 1 and 2 quit rates confirmed a non-significant difference.

Neurodevelopmental outcomes in the early CPAP and pulse oximetry trial

BACKGROUND

Previous results from our trial of early treatment with continuous positive airway pressure (CPAP) versus early surfactant treatment in infants showed no significant difference in the outcome of death or bronchopulmonary dysplasia. A lower (vs. higher) target range of oxygen saturation was associated with a lower rate of severe retinopathy but higher mortality. We now report longer-term results from our prespecified hypotheses.

METHODS

Using a 2-by-2 factorial design, we randomly assigned infants born between 24 weeks 0 days and 27 weeks 6 days of gestation to early CPAP with a limited ventilation strategy or early surfactant administration and to lower or higher target ranges of oxygen saturation (85 to 89% or 91 to 95%). The primary composite outcome for the longer-term analysis was death before assessment at 18 to 22 months or neurodevelopmental impairment at 18 to 22 months of corrected age.

RESULTS

The primary outcome was determined for 1234 of 1316 enrolled infants (93.8%); 990 of the 1058 surviving infants (93.6%) were evaluated at 18 to 22 months of corrected age. Death or neurodevelopmental impairment occurred in 27.9% of the infants in the CPAP group (173 of 621 infants), versus 29.9% of those in the surfactant group (183 of 613) (relative risk, 0.93; 95% confidence interval [CI], 0.78 to 1.10; P=0.38), and in 30.2% of the infants in the lower-oxygen-saturation group (185 of 612), versus 27.5% of those in the higher-oxygen-saturation group (171 of 622) (relative risk, 1.12; 95% CI, 0.94 to 1.32; P=0.21). Mortality was increased with the lower-oxygen-saturation target (22.1%, vs. 18.2% with the higher-oxygen-saturation target; relative risk, 1.25; 95% CI, 1.00 to 1.55; P=0.046).

CONCLUSIONS

We found no significant differences in the composite outcome of death or neurodevelopmental impairment among extremely premature infants randomly assigned to early CPAP or early surfactant administration and to a lower or higher target range of oxygen saturation. (Funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development and the National Heart, Lung, and Blood Institute; SUPPORT ClinicalTrials.gov number, NCT00233324.).

An integrated randomized intervention to reduce behavioral and psychosocial risks: pregnancy and neonatal outcomes

While biomedical risks contribute to poor pregnancy and neonatal outcomes in African American (AA) populations, behavioral and psychosocial risks (BPSR) may also play a part. Among low income AA women with psychosocial risks, this report addresses the impacts on pregnancy and neonatal outcomes of an integrated education and counseling intervention to reduce BPSR, as well as the contributions of other psychosocial and biomedical risks. Subjects were low income AA women ≥18 years living in the Washington, DC, metropolitan area and seeking prenatal care. Subjects (n = 1,044) were screened for active smoking, environmental tobacco smoke exposure (ETSE), depression, or intimate partner violence (IPV) and then randomized to intervention (IG) or usual care (UCG) groups. Data were collected prenatally, at delivery, and postpartum by maternal report and medical record abstraction. Multiple imputation methodology was used to estimate missing variables. Rates of pregnancy outcomes (miscarriage, live birth, perinatal death), preterm labor, Caesarean section, sexually transmitted infection (STI) during pregnancy, preterm birth (<37 weeks), low birth weight (<2,500 g), very low birth weight (<1,500 g), small for gestational age, neonatal intensive care unit (NICU) admission, and >2 days of hospitalization were compared between IG and UCG. Logistic regression models were created to predict outcomes based on biomedical risk factors and the four psychosocial risks (smoking, ETSE, depression, and IPV) targeted by the intervention. Rates of adverse pregnancy and neonatal outcomes were high and did not differ significantly between IG and UCG. In adjusted analysis, STI during the current pregnancy was associated with IPV (OR = 1.41, 95% CI 1.04-1.91). Outcomes such as preterm labor, caesarian section in pregnancy and preterm birth, low birth weight, small for gestational age, NICU admissions and >2 day hospitalization of the infants were associated with biomedical risk factors including preexisting hypertension and diabetes, previous preterm birth (PTB), and late initiation of prenatal care, but they were not significantly associated with active smoking, ETSE, depression, or IPV. Neither the intervention to reduce BPSR nor the psychosocial factors significantly contributed to the pregnancy and neonatal outcomes. This study confirms that biomedical factors significantly contribute to adverse outcomes in low income AA women. Biomedical factors outweighed psychosocial factors in contributing to adverse pregnancy and neonatal outcomes in this high-risk population. Early identification and management of hypertension, diabetes and previous PTB in low income AA women may reduce health disparities in birth outcomes. Level of evidence I.

Enrollment of extremely low birth weight infants in a clinical research study may not be representative

BACKGROUND AND OBJECTIVE

The Surfactant Positive Airway Pressure and Pulse Oximetry Randomized Trial (SUPPORT) antenatal consent study demonstrated that mothers of infants enrolled in the SUPPORT trial had significantly different demographics and exposure to antenatal steroids compared with mothers of eligible, but not enrolled infants. The objective of this analysis was to compare the outcomes of bronchopulmonary dysplasia, severe retinopathy of prematurity, severe intraventricular hemorrhage or periventricular leukomalacia (IVH/PVL), death, and death/severe IVH/PVL for infants enrolled in SUPPORT in comparison with eligible, but not enrolled infants.

METHODS

Perinatal characteristics and neonatal outcomes were compared for enrolled and eligible but not enrolled infants in bivariate analyses. Models were created to test the effect of enrollment in SUPPORT on outcomes, controlling for perinatal characteristics.

RESULTS

There were 1316 infants enrolled in SUPPORT; 3053 infants were eligible, but not enrolled. In unadjusted analyses, enrolled infants had significantly lower rates of death before discharge, severe IVH/PVL, death/severe IVH/PVL (all < 0.001), and bronchopulmonary dysplasia (P = .003) in comparison with eligible, but not enrolled infants. The rate of severe retinopathy of prematurity was not significantly different. After adjustment for perinatal factors, enrollment in the trial was not a significant predictor of any of the tested clinical outcomes.

CONCLUSIONS

The results of this analysis demonstrate significant outcome differences between enrolled and eligible but not enrolled infants in a trial using antenatal consent, which were likely due to enrollment bias resulting from the antenatal consent process. Additional research and regulatory review need to be conducted to ensure that large moderate-risk trials that require antenatal consent can be conducted in such a way as to ensure the generalizability of results.

Outcomes following candiduria in extremely low birth weight infants

BACKGROUND

Candidiasis carries a significant risk of death or neurodevelopmental impairment (NDI) in extremely low birth weight infants (ELBW; <1000 g). We sought to determine the impact of candiduria in ELBW preterm infants.

METHODS

Our study was a secondary analysis of the Neonatal Research Network study Early Diagnosis of Nosocomial Candidiasis. Follow-up assessments included Bayley Scales of Infant Development examinations at 18-22 months of corrected age. Risk factors were compared between groups using exact tests and general linear modeling. Death, NDI, and death or NDI were compared using generalized linear mixed modeling.

RESULTS

Of 1515 infants enrolled, 34 (2.2%) had candiduria only. Candida was isolated from blood only (69 of 1515 [4.6%]), cerebrospinal fluid (CSF) only (2 of 1515 [0.1%]), other sterile site only (not urine, blood, or CSF; 4 of 1515 [0.3%]), or multiple sources (28 of 1515 [2%]). Eleven infants had the same Candida species isolated in blood and urine within 3 days; 3 (27%) had a positive urine culture result first. Most urine isolates were Candida albicans (21 of 34 [62%]) or Candida parapsilosis (7 of 34 [29%]). Rate of death or NDI was greater among those with candiduria (50%) than among those with suspected but not proven infection (32%; odds ratio, 2.5 [95% confidence interval, 1.2-5.3]) after adjustment. No difference in death and death or NDI was noted between infants with candiduria and those with candidemia.

CONCLUSIONS

These findings provide compelling evidence that ELBW infants with candiduria are at substantial risk of death or NDI. Candiduria in ELBW preterm infants should prompt a systemic evaluation (blood, CSF, and abdominal ultrasound) for disseminated Candida infection and warrants treatment.

Understanding the association of biomedical, psychosocial and behavioral risks with adverse pregnancy outcomes among African-Americans in Washington, DC

This study investigates the relationship between adverse pregnancy outcomes in high-risk African American women in Washington, DC and sociodemographic risk factors, behavioral risk factors, and the most common and interrelated medical conditions occurring during pregnancy: diabetes, hypertension, preeclampsia, and Body Mass Index (BMI). Data are from a randomized controlled trial conducted in 6 prenatal clinics. Women in their 1st or 2nd trimester were screened for behavioral risks (smoking, environmental tobacco smoke exposure, depression, and intimate partner violence) and demographic eligibility. 1,044 were eligible, interviewed and followed through their pregnancies. Classification and Regression Trees (CART) methodology was used to: (1) explore the relationship between medical and behavioral risks (reported at enrollment), sociodemographic factors and pregnancy outcomes; (2) identify the relative importance of various predictors of adverse pregnancy outcomes; and (3) characterize women at the highest risk of poor pregnancy outcomes. The strongest predictors of poor outcomes were prepregnancy BMI, preconceptional diabetes, employment status, intimate partner violence, and depression. In CART analysis, preeclampsia was the first splitter for low birthweight; preconceptional diabetes was the first splitter for preterm birth (PTB) and neonatal intensive care admission; BMI was the first splitter for very PTB, large for gestational age, Cesarean section and perinatal death; employment was the first splitter for miscarriage. Preconceptional factors strongly influence pregnancy outcomes. For many of these women, the high risks they brought into pregnancy were more likely to impact their pregnancy outcomes than events during pregnancy.

Prediction of bronchopulmonary dysplasia by postnatal age in extremely premature infants

RATIONALE

Benefits of identifying risk factors for bronchopulmonary dysplasia in extremely premature infants include providing prognostic information, identifying infants likely to benefit from preventive strategies, and stratifying infants for clinical trial enrollment.

OBJECTIVES

To identify risk factors for bronchopulmonary dysplasia, and the competing outcome of death, by postnatal day; to identify which risk factors improve prediction; and to develop a Web-based estimator using readily available clinical information to predict risk of bronchopulmonary dysplasia or death.

METHODS

We assessed infants of 23-30 weeks' gestation born in 17 centers of the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network and enrolled in the Neonatal Research Network Benchmarking Trial from 2000-2004.

MEASUREMENTS AND MAIN RESULTS

Bronchopulmonary dysplasia was defined as a categorical variable (none, mild, moderate, or severe). We developed and validated models for bronchopulmonary dysplasia risk at six postnatal ages using gestational age, birth weight, race and ethnicity, sex, respiratory support, and Fi(O(2)), and examined the models using a C statistic (area under the curve). A total of 3,636 infants were eligible for this study. Prediction improved with advancing postnatal age, increasing from a C statistic of 0.793 on Day 1 to a maximum of 0.854 on Day 28. On Postnatal Days 1 and 3, gestational age best improved outcome prediction; on Postnatal Days 7, 14, 21, and 28, type of respiratory support did so. A Web-based model providing predicted estimates for bronchopulmonary dysplasia by postnatal day is available at https://neonatal.rti.org.

CONCLUSIONS

The probability of bronchopulmonary dysplasia in extremely premature infants can be determined accurately using a limited amount of readily available clinical information.

Very preterm birth is reduced in women receiving an integrated behavioral intervention: a randomized controlled trial

This study examines whether an integrated behavioral intervention with proven efficacy in reducing psycho-behavioral risks (smoking, environmental tobacco smoke exposure (ETSE), depression, and intimate partner violence (IPV)) in African-Americans is associated with improved pregnancy outcomes. A randomized controlled trial targeting risks during pregnancy was conducted in the District of Columbia. African-American women were recruited if reporting at least one of the risks mentioned above. Randomization to intervention or usual care was site and risk specific. Sociodemographic, health risk and pregnancy outcome data were collected. Data on 819 women, and their singleton live born infants were analyzed using an intent-to-treat approach. Bivariate analyses preceded a reduced logistical model approach to elucidate the effect of the intervention on the reduction of prematurity and low birth weight. The incidence of low birthweight (LBW) was 12% and very low birthweight (VLBW) was 1.6%. Multivariate logistic regression results showed that depression was associated with LBW (OR = 1.71, 95% CI = 1.12-2.62). IPV was associated with preterm birth (PTB) and very preterm birth (VPTB) (OR 1.64, 95% CI = 1.07-2.51, OR = 2.94, 95% CI = 1.40-6.16, respectively). The occurrence of VPTB was significantly reduced in the intervention compared to the usual care group (OR = 0.42, 95% CI = 0.19-0.93). Our study confirms the significant associations between multiple psycho-behavioral risks and poor pregnancy outcomes, including LBW and PTB. Our behavioral intervention with demonstrated efficacy in addressing multiple risk factors simultaneously reduced VPTB within an urban minority population.