Impact of postoperative complications on survival after oesophagectomy for oesophageal cancer

BACKGROUND

Recent evidence suggests that complications after oesophagectomy may decrease short- and long-term survival of patients with oesophageal cancer. This study aimed to analyse the impact of complications on survival in a Western cohort.

METHODS

Complications after oesophagectomy were recorded for all patients operated on between January 2006 and February 2017, with severity defined using the Clavien-Dindo classification. Associations between complications and overall and recurrence-free survival were assessed using univariable and multivariable Cox regression models.

RESULTS

Of 430 patients, 292 (67·9 per cent) developed postoperative complications, with 128 (39·8 per cent) classified as Clavien-Dindo grade III or IV. No significant associations were detected between Clavien-Dindo grade and either tumour (T) (P = 0·071) or nodal (N) status (P = 0·882). There was a significant correlation between Clavien-Dindo grade and ASA fitness grade (P = 0·032). In multivariable analysis, overall survival in patients with Clavien-Dindo grade I complications was similar to that in patients with no complications (hazard ratio (HR) 0·97, P = 0·915). However, patients with grade II and IV complications had significantly shorter overall survival than those with no complications: HR 1·64 (P = 0·007) and 1·74 (P = 0·013) respectively.

CONCLUSION

Increasing severity of complications after oesophagectomy was associated with decreased overall survival. Prevention of complications should improve survival.

Gender Differences in Parents' Communication With Their Adolescent Children about Sexual Risk and Sex-Positive Topics

A healthy sexual self-concept that captures an understanding of the risky and the positive aspects of sexuality is imperative to life-long well-being. Parents have a unique opportunity to instill knowledge of sexual risk as well as confidence and comfort around sexuality in their adolescents. Although parent-child communication about sexual risk is fairly common, less is known regarding the frequency of parent-child communication about sex-positive topics, such as sexual desire and satisfaction. This study examined the frequency of parents' communication with their children about sexual risk and sex-positive topics among a sample of 901 parents of 13-17-year-old adolescents (parent M_age= 40.61; 71% mothers) from across the U.S. Parents reported on sexual communication with their adolescent children (child M_age = 14.68; 50% daughters). We examined gender differences in communication patterns. Few parents communicated with their adolescents about sex-positive topics. Only 38% discussed sexual satisfaction, 38% discussed different types of sexual practices (e.g., oral sex), and 55% discussed sexual desire. Parents communicate more about sexual risk than sex-positive topics with their adolescents and this discrepancy was largest for mothers of daughters. Fathers of daughters communicate the least about sex-positive topics. Implications for intervention development and future research on sexual communication are discussed.

Feasibility, Acceptability, and Preliminary Efficacy of a Brief Online Sexual Health Program for Adolescents

This study evaluated the feasibility, acceptability, and preliminary efficacy of a 45-minute interactive, online sexual health program for adolescents, called Health Education and Relationship Training (HEART). The program was originally developed and evaluated among adolescent girls (HEART for Girls); the current project describes and evaluates a new version of the program that was adapted for boys and girls. Participants were 226 high school students (mean age = 16.3; 58% girls; 46% White; 79% heterosexual). Students were randomized to HEART or an attention-matched control and assessed at pre-test and immediate post-test. Overall, the program was feasible to administer in a school setting and youth found the program highly acceptable (83% liked the program, 87% learned new things, and 93% would use program content in the future). At post-test, students who completed HEART demonstrated improvements on every outcome we examined: sexual communication intentions, condom use intentions, HIV/STD knowledge, condom attitudes, condom norms, self-efficacy to practice safer sex, and sexual assertiveness compared to control participants (effect size ds = .23 to 1.27). Interactions by gender and sexual orientation revealed the program was equally acceptable and worked equally well for boys and girls and for heterosexual and sexual minority youth. We propose several avenues to further adapt and tailor HEART given its promise in promoting adolescent sexual health.

Adapting evidence-informed complex population health interventions for new contexts: a systematic review of guidance

BACKGROUND

Adapting interventions that have worked elsewhere can save resources associated with developing new interventions for each specific context. While a developing body of evidence shows benefits of adapted interventions compared with interventions transported without adaptation, there are also examples of interventions which have been extensively adapted, yet have not worked in the new context. Decisions on when, to what extent, and how to adapt interventions therefore are not straightforward, particularly when conceptualising intervention effects as contingent upon contextual interactions in complex systems. No guidance currently addresses these questions comprehensively. To inform development of an overarching guidance on adaptation of complex population health interventions, this systematic review synthesises the content of the existing guidance papers.

METHODS

We searched for papers published between January 2000 and October 2018 in 7 bibliographic databases. We used citation tracking and contacted authors and experts to locate further papers. We double screened all the identified records. We extracted data into the following categories: descriptive information, key concepts and definitions, rationale for adaptation, aspects of adaptation, process of adaptation, evaluating and reporting adapted interventions. Data extraction was conducted independently by two reviewers, and retrieved data were synthesised thematically within pre-specified and emergent categories.

RESULTS

We retrieved 6694 unique records. Thirty-eight papers were included in the review representing 35 sources of guidance. Most papers were developed in the USA in the context of implementing evidence-informed interventions among different population groups within the country, such as minority populations. We found much agreement on how the papers defined key concepts, aims, and procedures of adaptation, including involvement of key stakeholders, but also identified gaps in scope, conceptualisation, and operationalisation in several categories.

CONCLUSIONS

Our review found limitations that should be addressed in future guidance on adaptation. Specifically, future guidance needs to be reflective of adaptations in the context of transferring interventions across countries, including macro- (e.g. national-) level interventions, better theorise the role of intervention mechanisms and contextual interactions in the replicability of effects and accordingly conceptualise key concepts, such as fidelity to intervention functions, and finally, suggest evidence-informed strategies for adaptation re-evaluation and reporting.

TRIAL REGISTRATION

PROSPERO 2018, CRD42018112714.

Popular peer norms and adolescent sexting behavior

INTRODUCTION

Adolescents misperceive and are heavily influenced by the behavior of their popular peers, yet research has not yet investigated this phenomenon for a relatively new and potentially risky behavior: adolescent sexting. The present study investigates rates of sexting among popular and non-popular adolescents and the association between adolescents' perceptions of popular peers' sexting behavior and their own sexting behavior.

METHODS

A school-based sample of 626 adolescents from a rural high school in the Southeastern U.S. (M_age = 17.4, 53.5% female) completed surveys indicating whether they had sent a sext in the past year. Participants also reported on perceptions of popular peers' sexting behavior and completed sociometric nominations of peer status.

RESULTS

While 87.4% of adolescents believed the typical popular boy or girl in their class had sent a sext in the past year, only 62.5% of popular adolescents had actually sent a sext. There was no significant difference between rates of sexting among popular and non-popular (54.8%) adolescents. After adjusting for gender and sexual activity status, adolescents who believed that the typical popular peer sent a sext were over ten times more likely to have also sexted in the past year. Among adolescents who believed their popular peers had not sexted, girls were more likely than boys to have sexted themselves; however, this gender difference disappeared among adolescents who believed their popular peers had sexted.

CONCLUSIONS

These results underscore the importance of peer status and perceptions of peer norms in adolescents' sexting.

MRI hip findings in asymptomatic professional rugby players, ballet dancers, and age-matched controls

AIM

To investigate hip magnetic resonance imaging (MRI) findings in asymptomatic professional male rugby players and male ballet dancers compared to age-matched controls.

MATERIALS AND METHODS

After ethics committee approval and consent from participants, 11 professional rugby players, 10 professional ballet dancers, and 10 controls completed activity and symptom questionnaires and underwent 3 T MRI of their self-declared dominant hip. Each scan was independently scored by two musculoskeletal radiologists for multiple features, including: joint morphology, acetabular labrum appearance, cartilage loss, and capsular thickness. Clinical and MRI features were assessed for variance by group using one-way analysis of variance (ANOVA) tests and Tukey post-hoc pairwise comparison of means.

RESULTS

Labral tear prevalence was 87% with no significant difference between groups (p>0.05). Rates of paralabral cysts were significantly higher in ballet dancers (50%), compared to rugby players (0%) and controls (10%; p=0.01). Acetabular cartilage loss was present in 54% with no significant differences between groups. Superior capsular thickness was significantly greater in ballet dancers (5.3 mm) compared to rugby players (3.8 mm) and controls (3.8 mm; p=0.03).

CONCLUSION

Despite the difference in type of activity between groups, there were equally high rates of labral tears and acetabular cartilage loss, questioning the role that sport plays in the development of these findings and their relationship to symptoms. The focally increased superior capsular thickness in ballet dancers may be an adaptive response to extreme ranges of movement.

Assessment of Parent-Based Interventions for Adolescent Sexual Health: A Systematic Review and Meta-analysis

IMPORTANCE

Parent-based sexual health interventions have received considerable attention as one factor that can increase safer sexual behavior among youth; however, to our knowledge, the evidence linking parent-based interventions to youth sexual behaviors has not been empirically synthesized.

OBJECTIVE

To examine the association of parent-based sexual health interventions with 3 primary youth outcomes-delayed sexual activity, condom use, and parent-child sexual communication-as well as several secondary outcomes. We also explored potential moderators of intervention effectiveness.

DATA SOURCES

A systematic search was conducted of studies published through March 2018 using MEDLINE, PsycINFO, Communication Source, and CINAHL databases and relevant review articles.

STUDY SELECTION

Studies were included if they: (1) sampled adolescents (mean age, ≤18 years), (2) included parents in a key intervention component, (3) evaluated program effects with experimental/quasi-experimental designs, (4) included an adolescent-reported behavioral outcome, (5) consisted of a US-based sample, and (6) were published in English.

DATA EXTRACTION AND SYNTHESIS

Standardized mean difference (d) and 95% confidence intervals were computed from studies and meta-analyzed using random-effects models. A secondary analysis evaluated potential moderating variables.

MAIN OUTCOMES AND MEASURES

The primary outcomes were delayed sexual activity, condom use, and sexual communication.

RESULTS

Independent findings from 31 articles reporting on 12 464 adolescents (mean age = 12.3 years) were synthesized. Across studies, there was a significant association of parent-based interventions with improved condom use (d = 0.32; 95% CI, 0.13-0.51; P = .001) and parent-child sexual communication (d = 0.27; 95% CI, 0.19-0.35; P = .001). No significant differences between parent-based interventions and control programs were found for delaying sexual activity (d = -0.06; 95% CI, -0.14 to 0.02; P = .16). The associations for condom use were heterogeneous. Moderation analyses revealed larger associations for interventions that focused on younger, compared with older, adolescents; targeted black or Hispanic youth compared with mixed race/ethnicity samples; targeted parents and teens equally compared with emphasizing parents only; and included a program dose of 10 hours or more compared with a lower dose.

CONCLUSIONS AND RELEVANCE

Parent-based sexual health programs can promote safer sex behavior and cognitions in adolescents, although the findings in this analysis were generally modest. Moderation analyses indicated several areas where future programs could place additional attention to improve potential effectiveness.

Meta-analysis of the influence of a positive circumferential resection margin in oesophageal cancer

Background

The evidence regarding the prognostic impact of a positive circumferential resection margin (CRM) in oesophageal cancer is conflicting, and there is global variability in the definition of a positive CRM. The aim of this study was to determine the impact of a positive CRM on survival in patients undergoing oesophagectomy for oesophageal cancer.

Methods

A systematic review and meta‐analysis was performed. PubMed and Embase databases were searched for articles to May 2018 examining the effect of a positive CRM on survival. Cohort studies written in English were included. Meta‐analyses of univariable and multivariable hazard ratios (HRs) were performed using both Royal College of Pathologists (RCP) and College of American Pathologists (CAP) criteria. Risk of bias was assessed using the Newcastle–Ottawa Scale. Egger regression, and Duval and Tweedie trim‐and‐fill statistics were used to assess publication bias.

Results

Of 133 studies screened, 29 incorporating 6142 patients were finally included for analysis. Pooled univariable HRs for overall survival in patients with a positive CRM were 1·68 (95 per cent c.i. 1·48 to 1·91; P < 0·001) and 2·18 (1·84 to 2·60; P < 0·001) using RCP and CAP criteria respectively. Subgroup analyses demonstrated similar results for patients by T category, neoadjuvant therapy and tumour type. Pooled HRs from multivariable analyses suggested that a positive CRM was independently predictive of a worse overall survival (RCP: 1·41, 1·21 to 1·64, P < 0·001; CAP: 2·37, 1·60 to 3·51, P < 0·001).

Conclusion

A positive CRM is associated with a worse prognosis regardless of classification system, T category, tumour type or neoadjuvant therapy.

Structural crossover in a model fluid exhibiting two length scales: Repercussions for quasicrystal formation

We investigate the liquid state structure of the two-dimensional model introduced by Barkan et al. [Phys. Rev. Lett. 113, 098304 (2014)10.1103/PhysRevLett.113.098304], which exhibits quasicrystalline and other unusual solid phases, focusing on the radial distribution function g(r) and its asymptotic decay r→∞. For this particular model system, we find that as the density is increased there is a structural crossover from damped oscillatory asymptotic decay with one wavelength to damped oscillatory asymptotic decay with another distinct wavelength. The ratio of these wavelengths is ≈1.932. Following the locus in the phase diagram of this structural crossover leads directly to the region where quasicrystals are found. We argue that identifying and following such a crossover line in the phase diagram towards higher densities where the solid phase(s) occur is a good strategy for finding quasicrystals in a wide variety of systems. We also show how the pole analysis of the asymptotic decay of equilibrium fluid correlations is intimately connected with the nonequilibrium growth or decay of small-amplitude density fluctuations in a bulk fluid.

Newborn and infant physical examination standards in a dedicated clinic for developmental dysplasia of the hip

Introduction In 2014 our centre started a dedicated clinic for developmental dysplasia of the hip (DDH). The aim of the clinic was to streamline DDH referrals, enabling timely review, imaging and multidisciplinary treatment. Ongoing audit has been carried out based on the UK National Screening Committee newborn and infant physical examination (NIPE) guidelines, first published in 2008. Methods A three-year prospective audit was undertaken between 2014 and 2016 assessing compliance with NIPE standards (ST2b and ST2d) relating to timeliness of expert consultation following positive ultrasonography findings of DDH with positive examination or risk factors. Results A total of 257 babies born between January 2014 and December 2016 were seen in our dedicated DDH clinic, with 106 with abnormalities on ultrasonography and 54 requiring treatment. Compliance with 'expert consultation within 4 weeks of age for babies with an abnormality detected on clinical examination and positive ultrasonography' improved from 50% in 2014 to 53% in 2015 and 71% in 2016. Compliance with 'expert consultation within 8 weeks of age for babies with positive risk factors, negative examination and positive ultrasonography' improved from 65% in 2014 to 93% in 2015 and 100% in 2016. Conclusions This prospective audit assessing timeliness of expert consultation has demonstrated ongoing improvements between 2014 and 2016. A greater proportion of babies with ultrasonography evidence of DDH have been seen at the appropriate time. In the majority of cases, this has enabled timely non-invasive treatment with a Pavlik harness rather than surgery.