Parenting experiences and outcomes among former adolescent mothers: A mixed methods study

The purpose of this explanatory sequential mixed methods study was to examine parenting outcomes and experiences over time among marginalized adolescent mothers enrolled in randomized clinical trials (RCT) between 2002 and 2016 testing Minding the Baby® (MTB), an early home visiting program. The quantitative phase examined associations between measures of maternal experiences and parenting outcomes from 71 participants 2-8 years since RCT completion. MTB mothers reported less hostile parenting and fewer child behavior problems. The sequential qualitative phase involved interviews with a subsample (n = 31) and revealed six themes about their personal and parenting maturation. Through integration of quantitative and qualitative data, we generated metainferences, revealing a nuanced understanding of participants' experiences. Integrated findings revealed the complex personal and parenting experiences among former adolescent mothers during their developmental phases of emerging and early adulthood. Findings inform clinical and research approaches to promote personal growth and positive parenting outcomes over time among women who began childbearing in adolescence.

Estimating Surveillance Bias in Child Maltreatment Reporting During Home Visiting Program Involvement

It is unclear if surveillance bias (increased reports to Child Protective Services [CPS] related to program involvement) has a substantial impact on evaluation of home visiting (HV) prevention programs. We estimated surveillance bias using data from Connecticut's HV program, birth certificates, CPS, and hospitals. Using propensity score matching, we identified 15,870 families similar to 4015 HV families. The difference-in-differences approach was used to estimate surveillance bias as the change in investigated reports from the last 6 months of program involvement to the next 6 months. The median age of the children at program exit was 1.2 years (range: 60 days, 5 years). We estimated that 25.6% of investigated reports in the HV group resulted from surveillance bias. We reviewed CPS reports of 194 home-visited families to determine if a home visitor made the report and found that 10% were directly from home visitors. Program evaluations should account for surveillance bias.

Integrating Palliative Care Into Self-management of Breast Cancer: A Pilot Randomized Controlled Trial

BACKGROUND

Breast cancer patients may not be well-informed about palliative care, hindering its integration into cancer self-management.

OBJECTIVE

The aim of this study was to test Managing Cancer Care: A Personal Guide (MCC-PT), an intervention to improve palliative care literacy and cancer self-management.

METHODS

This was a single-blind pilot randomized controlled trial to evaluate the feasibility/acceptability and intervention effects of MCC-PT on palliative care literacy, self-management behaviors/emotions, and moderation by demographic/clinical characteristics. We enrolled 71 stages I to IV breast cancer patients aged at least 21 years, with >6-month prognosis at an academic cancer center. Patients were randomized to MCC-PT (n = 32) versus symptom management education as attention-control (n = 39). At baseline, 1 month, and 3 months, participants completed the Knowledge of Care Options Test (primary outcome), Control Preferences Scale, Goals of Care Form, Medical Communication Competence Scale, Measurement of Transitions in Cancer Scale, Chronic Disease Self-efficacy Scale, Hospital Anxiety and Depression Scale, and the Mishel Uncertainty in Illness Scale.

RESULTS

Mean participant age was 51.5 years (range, 28-74 years); 53.5% were racial/ethnic minority patients, and 40.8% had stage III/IV cancer. After adjusting for race/ethnicity, MCC-PT users improved their palliative care literacy with a large effect size (partial η2 = 0.13). Patients at late stage of disease showed increased self-management (partial η2 = 0.05) and reduced anxiety (partial η2 = 0.05) and depression (partial η2 = 0.07) with medium effect sizes.

CONCLUSIONS

Managing Cancer Care: A Personal Guide is feasible and appears most effective in late-stage cancer. Research is needed to elucidate relationships among cancer stage, race/ethnicity, and self-management outcomes.

IMPLICATIONS FOR PRACTICE

Integration of palliative care into cancer care can assist in creation of appropriate self-management plans and improve emotional outcomes.

Participation in an Attachment-Based Home Visiting Program Is Associated with Lower Child Salivary C-Reactive Protein Levels at Follow-Up

OBJECTIVE

Exposure to early childhood adversity is associated with an increased risk for physiological disruption, including increased inflammation. Early interventions that support the mother-child relationship have been shown to potentially buffer negative psychosocial outcomes related to early adversity, but it is unclear whether these interventions have long-term biological effects. We evaluated whether prior participation in Minding the Baby® (MTB), an attachment-based home visiting intervention for young mother-infant dyads living in underserved communities, is associated with lower child salivary inflammatory biomarkers compared with controls at follow-up.

METHODS

Ninety-seven maternal-child dyads (n = 43 intervention and n = 54 controls) enrolled in a follow-up study of the MTB randomized controlled trial, an average of 4.6 years after RCT completion. Children provided salivary specimens. We used adjusted linear regression to examine the relationship between MTB participation and child salivary inflammatory biomarkers (C-reactive protein [CRP], interleukin [IL]-1β, IL-6, IL-8, and TNF-α).

RESULTS

Children were on average 6.6 years old, 48% female, and identified as non-Hispanic/Latino Black/African American (34%) and Hispanic/Latino (63%). Participation in MTB was associated with lower salivary CRP levels (β = -0.31, SE = 0.28, p = 0.003) compared with controls. Participation in MTB was not associated with salivary cytokine levels.

DISCUSSION

Participation in an intensive two-generation home visiting intervention such as MTB may reduce salivary inflammatory biomarkers associated with early childhood adversity. Replication and further research are needed to improve the understanding of the potential for early childhood interventions to buffer the biological embedding of early adversity.

Examining Mothers' Childhood Maltreatment History, Parental Reflective Functioning, and the Long-Term Effects of the Minding the Baby® Home Visiting Intervention

Research is needed to better understand how childhood maltreatment history affects parental reflective capacities, and whether early childhood interventions help mitigate these effects. We examined associations between childhood maltreatment and current parenting (parental reflective functioning, parenting behaviors) among mothers who participated in a follow-up study (N = 97) of the Minding the Baby® (MTB) randomized control trial. MTB is a home visiting program that aims to help mothers understand their child's mental states (feelings, intentions, needs) by promoting parental reflective functioning. Mothers retrospectively reported childhood maltreatment using the Childhood Trauma Questionnaire. Endorsing a higher number of childhood maltreatment subtypes was associated with less supportive/engaged parenting and higher pre-mentalizing modes, or difficulty with appropriately reflecting on the child's mental states. These relationships were not moderated by participation in the MTB intervention. However, exploratory analyses of individual maltreatment subtypes revealed that participation in MTB may mitigate the harmful effects of childhood emotional abuse on pre-mentalizing modes, specifically. Further research is needed to understand the mechanisms through which early childhood interventions may prevent intergenerational cycles of maltreatment.

Child maltreatment-related children's emergency department visits before and during the COVID-19 pandemic in Connecticut

BACKGROUND

Previous studies of national emergency department (ED) data demonstrate a decrease in visits coded for physical abuse during the pandemic period. However, no study to date has examined the incidence of multiple child maltreatment types (physical abuse, sexual abuse, and neglect), within a single state while considering state-specific closure policies. Furthermore, no similar study has utilized detailed chart review to identify cases, nor compared hospital data to Child Protective Services (CPS) reports.

OBJECTIVE

To determine the incidence of child maltreatment-related ED visits before and during the COVID-19 pandemic, including characterizing the type of maltreatment, severity, and CPS reporting.

PARTICIPANTS AND SETTING

Children younger than 18 years old at two tertiary-care, academic children's hospitals in X state.

METHODS

Maltreatment-related ED visits were identified by ICD-10-CM codes and keywords in chief concerns and provider notes. We conducted a cross-sectional retrospective review of ED visits and child abuse consultations during the pre-COVID (1/1/2019-3/15/2020) and COVID (3/16/2020-8/31/2020) periods, as well as state-level CPS reports for suspected maltreatment.

RESULTS

Maltreatment-related ED visits decreased from 15.7/week in the matched pre-COVID period (n = 380 total) to 12.3/week (n = 296 total) in the COVID period (P < .01). However, ED visits (P < .05) and CPS reports (P < .001) for child neglect increased during this period. Provider notes identified 62.4% of child maltreatment ED visits, while ICD-10 codes identified only-CM captured 46.8%.

CONCLUSION

ED visits for physical and sexual abuse declined, but neglect cases increased during the COVID-19 pandemic in X state.

Using probabilistic record linkage and propensity-score matching to identify a community-based comparison population

In retrospective cohort studies of interventions disseminated to communities, it is challenging to find comparison groups with high-quality data for evaluation. We present one methodological approach as part of our study of birth outcomes of second-born children in a home visiting (HV) program targeting first-time mothers. We used probabilistic record linkage to link Connecticut's Nurturing Families Network (NFN) HV program and birth-certificate data for children born from 2005 to 2015. We identified two potential comparison groups: a propensity-score-matched group from the remaining birth certificate sample and eligible-but-unenrolled families. An analysis of interpregnancy interval (IPI) is presented to exemplify the approach. We identified the birth certificates of 4822 NFN families. The propensity-score-matched group had 14,219 families (3-to-1 matching) and we identified 1101 eligible-but-unenrolled families. Covariates were well balanced for the propensity-score-matched group, but poorly balanced for the eligible-but-unenrolled group. No program effect on IPI was found. By combining propensity-score matching and probabilistic record linkage, we were able to retrospectively identify relatively large comparison groups for quasi-experimental research. Using birth certificate data, we accessed outcomes for all of these individuals from a single data source. Multiple comparison groups allow us to confirm findings when each method has some limitations. Other researchers seeking community-based comparison groups could consider a similar approach.

School age effects of Minding the Baby-An attachment-based home-visiting intervention-On parenting and child behaviors

Multiple interventions have been developed to improve the caregiver-child relationship as a buffer to the effects of early life adversity and toxic stress. However, relatively few studies have evaluated the long-term effects of these early childhood interventions, particularly on parenting and childhood behaviors. Here we describe the early school-age follow-up results of a randomized controlled trial of Minding the Baby ® (MTB), a reflective, attachment-based, trauma-informed, preventive home-visiting intervention for first-time mothers and their infants. Results indicate that mothers who participated in MTB are less likely to show impaired mentalizing compared to control mothers two to eight years after the intervention ended. Additionally, MTB mothers have lower levels of hostile and coercive parenting, and their children have lower total and externalizing problem behavior scores when compared to controls at follow-up. We discuss our findings in terms of their contribution to understanding the long-term parenting and childhood socio-emotional developmental effects of early preventive interventions for stressed populations.

Birth-Related Outcomes for Second Children Following Home Visiting Program Enrollment for New Parents of First Children

Introduction

Home visiting (HV) programs aim to promote child and family health through perinatal intervention. HV may benefit second children through improving subsequent pregnancy and birth outcomes. However, HV impacts on birth outcomes of second children have not been examined in a naturalistic setting.

Methods

Using data from Connecticut Nurturing Families Network (NFN) home visiting program of families enrolled from 2005 to 2015, we compared birth-related outcomes (birthweight, preterm birth, Cesarean section delivery, prenatal care utilization) of second children (n = 1758) to demographically similar propensity-score-matched families that were not enrolled in NFN (n = 5200). We examined whether the effects of NFN differed by maternal age, race and ethnicity, or visit attendance pattern.

Results

There was no program effect for the full sample. The effect of NFN did not differ by maternal age or visit attendance pattern but did differ by maternal race and ethnicity. Black women in NFN were more likely to receive adequate prenatal care during their second pregnancy (OR 1.05; 95% CI 1.01, 1.09) and Hispanic women in NFN were less likely to deliver by Cesarean section for their second birth (OR 0.97; 95% CI 0.94, 0.99), compared to Black and Hispanic women in the comparison group respectively. There was a protective program effect on prematurity of the second child (OR 0.92; 95% CI 0.85, 0.996) for women with a preterm first birth.

Discussion

These findings suggest that benefits of HV extend to subsequent birth-related outcomes for women from marginalized racial/ethnic groups. HV may help buffer some harmful social determinants of health.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10995-021-03365-3.

The Association Between History of Depression and Access to Care Among Medicare Beneficiaries During the COVID-19 Pandemic

BACKGROUND

Depression is associated with a higher risk for experiencing barriers to care, unmet social needs, and poorer economic and mental health outcomes.

OBJECTIVE

To determine the impact of COVID-19 on ability to access care, social and economic needs, and mental health among Medicare beneficiaries with and without depression.

DESIGN AND PARTICIPANTS

Cross-sectional study using data from the 2020 Medicare Current Beneficiary Survey COVID-19 Summer Supplement Public Use File.

MAIN MEASURES

Access to medical care, inability to access food, medications, household supplies, pay rent or mortgage, feelings of economic security, and mental health effects since COVID-19, risk-adjusted for sociodemographic and clinical characteristics.

KEY RESULTS

Participants were 11,080 Medicare beneficiaries (nationally representative of 55,960,783 beneficiaries), 27.0% with and 73.0% without a self-reported history of depression. As compared to those without a history of depression, Medicare beneficiaries with a self-reported history of depression were more likely to report inability to get care because of COVID-19 (aOR = 1.28, 95% CI, 1.09, 1.51; P = 0.003), to get household supplies such as toilet paper (aOR = 1.32, 95% CI, 1.10, 1.58; P = 0.003), and to pay rent or mortgage (aOR = 1.64, 95% CI, 1.07, 2.52; P = 0.02). Medicare beneficiaries with a self-reported history of depression were more likely to report feeling less financially secure (aOR = 1.43, 95% CI, 1.22, 1.68; P < 0.001), more stressed or anxious (aOR = 1.68, 95% CI, 1.49, 1.90; P < 0.001), more lonely or sad (aOR = 1.97, 95% CI, 1.68, 2.31; P < 0.001), and less socially connected (aOR = 1.27, 95% CI, 1.10, 1.47; P = 0.001).

CONCLUSION

A self-reported history of depression was associated with greater inability to access care, more unmet social needs, and poorer economic and mental health outcomes, suggesting greater risk for adverse health outcomes during COVID-19.

Maternal Experiences of Racial Discrimination, Child Indicators of Toxic Stress, and the Minding the Baby Early Home Visiting Intervention

BACKGROUND

Racism is a significant source of toxic stress and a root cause of health inequities. Emerging evidence suggests that exposure to vicarious racism (i.e., racism experienced by a caregiver) is associated with poor child health and development, but associations with biological indicators of toxic stress have not been well studied. It is also unknown whether two-generation interventions, such as early home visiting programs, may help to mitigate the harmful effects of vicarious racism.

OBJECTIVE

The purpose of this study was to examine associations between maternal experiences of racial discrimination and child indicators of toxic stress and to test whether relationships are moderated by prior participation in Minding the Baby (MTB), an attachment-based early home visiting intervention.

METHODS

Ninety-seven maternal-child dyads (n = 43 intervention dyads, n = 54 control dyads) enrolled in the MTB Early School Age follow-up study. Mothers reported on racial discrimination using the Experiences of Discrimination Scale. Child indicators of toxic stress included salivary biomarkers of inflammation (e.g., C-reactive protein, panel of pro-inflammatory cytokines), body mass index, and maternally reported child behavioral problems. We used linear regression to examine associations between maternal experiences of racial discrimination and child indicators of toxic stress and included an interaction term between experiences of discrimination and MTB group assignment (intervention vs. control) to test moderating effects of the MTB intervention.

RESULTS

Mothers identified as Black/African American (33%) and Hispanic/Latina (64%). In adjusted models, maternal experiences of racial discrimination were associated with elevated salivary interleukin-6 and tumor necrosis factor-α levels in children, but not child body mass index or behavior. Prior participation in the MTB intervention moderated the relationship between maternal experiences of discrimination and child interleukin-6 levels.

DISCUSSION

Results of this study suggest that racism may contribute to the biological embedding of early adversity through influences on inflammation, but additional research with serum markers is needed to better understand this relationship. Improved understanding of the relationships among vicarious racism, protective factors, and childhood toxic stress is necessary to inform family and systemic-level intervention.

Demographic, Socioeconomic, Health Systems, and Geographic Factors Associated with Vaginal Birth After Cesarean: An Analysis of 2017 U.S. Birth Certificate Data

OBJECTIVES

In order to better understand the current rates of vaginal birth after cesarean (VBAC) in the United States, 2017 U.S. birth certificate data were used to examine sociodemographic and geographic factors associated with the outcome of a VBAC.

METHODS

The 2017 Natality Limited Geography Dataset and block sequential logistic regression were used to examine sociodemographic and geographic factors associated with subsequent births in 2017 in the United States to women with a history of 1 or 2 cesareans (N = 540,711).

RESULTS

The adjusted odds of VBAC were 6% higher for Black women (1.06; 95% CI: 1.04, 1.08) and 18% higher for American Indian/Alaska Native women (aOR 1.18; 95% CI: 1.10, 1.27) relative to white women. Asian/Pacific Islander women were 9% less likely to have a VBAC (aOR 0.91; 95% CI: 0.88, 0.94) than similar white women with a history of cesarean delivery. Latina women had a 10% less likelihood of a VBAC (aOR 0.90; 95% CI: 0.88, 0.92) when compared with non-Latina women. Women with a high school education (aOR 0.85; 95% CI: 0.83, 0.88) or some college (aOR 0.85; 95% CI: 0.84, 0.87) were less likely to have a VBAC than women educated at a baccalaureate level or higher. Women whose births were paid for by Medicaid had a 5% increased likelihood of VBAC over women with private insurance (aOR 1.05, 95% CI: 1.03, 1.07). Women who self-pay have twice the likelihood of VBAC (aOR 1.99; 95% CI: 1.92, 2.07) compared to women with private insurance. The adjusted odds of VBAC were lowest for women giving birth in Southern states (aOR 0.72; 95% CI: 0.71, 0.74) and highest for women giving birth in the Midwest (aOR 1.19; 95% CI: 1.16, 1.22) relative to women in the Northeastern U.S. Thirteen percent (13%) of women who had a VBAC had a certified nurse-midwife (CNM) birth attendant, which is 44% higher than the national CNM-attended birth rate.

CONCLUSIONS FOR PRACTICE

Significant variation exists in VBAC rates based on a number of sociodemographic and geographic factors, likely reflecting disparities in access to vaginal birth after cesarean and differences in preference regarding mode of birth after cesarean. Further research is recommended to better understand and address these disparities to improve maternity care.

Encountering Child Abuse and Neglect in Home Visiting: a Qualitative Study of Visitor and Supervisor Experiences

Prevention of child maltreatment is a goal of home visiting (HV) for new mothers. How home visitors and their clinical supervisors manage concerns about child maltreatment may impact both the families' and the home visitors' engagement with the program. We sought to understand how HV personnel encounter and respond to concerns of child maltreatment and how these concerns are related to their work with families. We conducted an interpretive descriptive qualitative study of home visitors and supervisors in a statewide HV program, using the Parents as Teachers curriculum, to describe the experience of HV personnel. Two researchers conducted semi-structured interviews March 2016 to October 2017. Interviews were concurrently transcribed, coded, and analyzed, using thematic analysis. After 13 interviews with home visitors and 13 interviews with supervisors, codes and themes were saturated. We identified three themes: Decision to Call Child Protective Services (CPS), Relationships, and Collaborating with CPS. The decision to call CPS was described as difficult, and there was substantial variation in the details of this decision. The relationship between home visitor and family was consistently the most important. Variations were seen in how home visitors and supervisors collaborated with CPS, ranging from strong connections through liaisons to frustrations due to poor communication and perceived variation in how cases were handled. The decision to report a family to CPS is a challenging clinical issue; additional training and connections with CPS may improve consistency across sites for home visitors.

Changes in Functional Status and Health-Related Quality of Life in Older Adults After Surgical, Interventional, or Medical Management of Acute Myocardial Infarction

Functional status and health-related quality of life (HRQoL) are important outcomes, particularly among older patients. However, data on such patient-centered outcomes after cardiac surgery are limited. We evaluated the incidence and predictors of decline in functional status and HRQoL among older patients hospitalized for acute myocardial infarction (AMI). Participants were age 75 years or older hospitalized for AMI at 94 US sites. We examined decline in functional status (defined as decline in 1 or more activities of daily living, ADLs), as well as mental (MCS) and physical component scales (PCS) of the SF-12 to assess HRQoL (5-point decline or greater in each scale) between 1 month prior to the hospitalization and 6 months after. Multivariable model compared the risk of decline after coronary artery bypass graft (CABG), percutaneous coronary intervention (PCI) and medical management. Among 3041 patients (1708 PCI, 362 CABG, and 971 medical management), 1525 (50.2%) experienced decline in 1 or more domain: 633 (20.8%) declined in ADLs, 786 (25.9%) declined in the MCS, and 1078 (35.5%) declined in the PCS. The unadjusted incidence of ADL decline was the lowest among patients who underwent CABG (n = 50, 13.8%) compared with PCI (n = 271, 15.9%) or medical management (n = 312, 32.1%). Patients who underwent CABG and PCI had lower adjusted risk of decline in functional and HRQoL compared with those who received medical therapy. The risks after CABG and PCI were not significantly different. Over half of older patients significantly declined in function or HRQoL after AMI. Compared with medical management, risk of decline was lower in those who underwent revascularization.

Differences in Frequency of Visits to Pediatric Primary Care Practices and Emergency Departments by Body Mass Index

OBJECTIVES

To examine differences in utilization across health care settings among children by body mass index (BMI) categories to help identify opportunities for interventions.

METHODS

A retrospective study was conducted using 1 year of electronic health records following an index primary care visit for children 3 to 17 years old in 2016. Index visits occurred at >40 pediatric practices affiliated with a Northeastern health system. Using normal BMI as a reference group, we examined the extent to which children's BMI percentile categories were associated with primary care visits, emergency department (ED) visits, hospitalizations, and ED visit acuity. Age, sex, race/ethnicity, and insurance status were used as covariates.

RESULTS

Of those with biologically plausible values for height and weight (n = 30,352), the prevalences of overweight, obesity, and severe obesity were 16.3%, 12.4%, and 5.7%, respectively. Children outside of the normal BMI range made more primary care visits; however, relative patterns of ED utilization were not consistent. Children with obesity versus normal BMI were less likely to have ED visits of high acuity. Risk of hospitalization was higher among children with overweight or severe obesity.

CONCLUSIONS

Children's BMI categories were associated with health care utilization, specifically primary care visits, ED visits, and hospitalizations. Further investigation is needed to explore the drivers of these differences in utilization, such as the impact of stigma and perceived weight bias on care-seeking patterns, and to examine the role of settings outside of primary care in pediatric weight management.

Availability of Grocery Delivery to Food Deserts in States Participating in the Online Purchase Pilot

This cross-sectional study examines the availability of grocery delivery in census tracts designated as food deserts and among households within them.

Associations Between Maternal Caregiving and Child Indicators of Toxic Stress Among Multiethnic, Urban Families

INTRODUCTION

Our purpose was to examine associations between maternal caregiving and child indicators of toxic stress among multiethnic, urban families with children of early school age.

METHOD

We conducted an exploratory cross-sectional analysis of 54 maternal-child dyads. Mothers reported on parenting behaviors and parental reflective functioning (PRF). Child indicators of toxic stress included hair/salivary biomarkers, anthropometric characteristics, and maternally reported health and behavior.

RESULTS

Hostile/coercive parenting behaviors were associated with child externalizing behavioral problems (r = 0.43, p = .001, but lower interleukin (IL) 6 levels (r = 0.31, p = .03). High PRF was associated with fewer child emergency department visits (ρ = -0.43, p = .009), whereas impaired PRF was associated with more behavioral problems (ρ = 0.52, p < .0001).

DISCUSSION

PRF and supportive parenting behaviors may protect against toxic stress among vulnerable families, but additional research is needed to better understand these relationships. Resources are available to help clinicians screen for family risk factors and model responsive caregiving in pediatric settings.

Visit Attendance Patterns in Nurse-Family Partnership Community Sites

We examined visit attendance patterns of mothers enrolled in the Nurse-Family Partnership (NFP) home visitation program and associations between these patterns and characteristics of the families and sites, with the goal of increasing participant engagement. We utilized repeated measures latent class analysis to identify attendance patterns among 66,967 mothers in NFP sites across the USA. Mothers enrolled from 1996 to 2010. Data were collected by home visitors and aggregated by the NFP National Service Office. Five visit attendance patterns were identified. Consistent attenders (22%) remained engaged for the full program and attended 51.3 visits on average. Inconsistent attenders (9%) remained engaged but missed many visits, with an average of 36.4 visits. The remaining patterns were characterized by when participants left the program: early (28%; 6.7 visits), gradually (27%; 19.4 visits), or late (15%; 35.3 visits). Consistent and inconsistent attenders were less likely to use English as their primary language than other participants (R = 0.12; p < .001). Participants with more nurse changes per visit attended were more likely to drop out early (R = 0.11; p < .001). Sites with a higher percent of missing data had smaller portions of mothers who remained consistently engaged in the program over time (b = - 0.032; p < .01) and greater portions in the late (b = 0.007; p < .04) and gradual attrition classes (b = 0.018; p < .01). The large number of participants who dropped out early is concerning. Further exploration of this group may optimize use of resources by improving either retention or targeting of potential participants.

Birth outcomes of second children after community-based home visiting: A research protocol

Birth-related outcomes, such as birth weight, have lifelong impacts on health. Home visiting (HV) is an established approach to improve the health of children and families, parenting practices, and connections to social and health services. Many HV programs target first-time mothers, in part because HV activities related to a first-birth may improve birth outcomes for subsequent children, but few researchers have examined these effects. We will link data from a statewide HV program (Nurturing Families Network [NFN]) to birth certificate data to create comparison groups and measure outcomes in this observational study. Specifically, we will compare birth outcomes for NFN second-children (n = 3000) to those for: (a) first-child older siblings whose birth/gestation led to NFN enrollment (n = 3000); (b) second children of families who were screened as eligible for NFN, but not offered the program due to home visitor availability and other logistical reasons (n = 650); and (c) non-NFN second children in a propensity-score-matched group created using the likelihood of enrollment in NFN based on maternal health, demographics, and neighborhood characteristics (n = 6000). The outcomes we will examine are birth spacing, prenatal care received, cesarean section rate, gestational age, and birth weight in second-children. We will also examine the associations between program attendance (i.e., missed visits, dropout) and birth outcomes, that will generate evidence that may be used in programmatic decisions regarding continued funding and/or modification of NFN, prioritization of specific retention efforts, and targeting of first-time mothers. Use of this evidence should improve outcomes for future NFN families and may inform similar programs.

Abstract P5-14-06: Prioritization of patient reported outcomes by women with metastatic breast cancer

Introduction: An emphasis on patient-centered care has led to a growing interest in collecting patient-reported outcomes (PROs) in the setting of cancer care. Routine collection of actionable PROs has been shown to improve patient satisfaction with care and even prolong survival. However, completion rates of PROs outside of the research setting are low, which may be due to an incomplete understanding of the outcomes patients value most. Prior work has focused primarily on symptom burden, but patients are also affected by disease and treatment across multiple domains (e.g. physical, psychological, social, and financial). To address this knowledge gap, we conducted a qualitative study among women with metastatic breast cancer (MBC) to identify the optimal patient-centered approach to collecting PRO data.

Methods: We conducted 1-on-1 interviews with patients who had started a treatment regimen for MBC within the past 6 weeks at the Breast Center at Smilow Cancer Hospital of Yale New Haven Hospital to determine which PROs were most personally relevant. We assessed heterogeneity across patients in their prioritization. Patients were asked which of a list of six PRO domains they would like their provider to have information about and then ranked the domains by order of importance (from most to least important). The following domains were created from the NCCN Distress Thermometer: physical well-being, emotional well-being, treatment burden, functional status, financial concerns, and social well-being. For each ranked domain, patients were asked to rank items within the domain using a card sorting exercise where the number of items ranged from 5 to 15. Patients were then asked where and how often they preferred to report PROs.

Results: Ten women with MBC completed the card sorting exercise: mean age was 58 years (+/- 12), 7 were white, 2 African American and 1 Asian; 1 identified as Hispanic. After 10 interviews, it was apparent that no single set of domain rankings was common across patients. Patient prioritization of PRO domains was unique and varied. Selection and prioritization of PRO domains and items within each domain were unique and varied. Five women reported “physical well-being” as the most important domain; treatment burden and emotional well-being were also selected as most important or ranked as highly important. Participants preferred reporting MBC PROs while in the waiting room for all domains except emotional well-being (from home was the preference). However, participants were willing to complete PRO assessment in the waiting room for about ten minutes and at home for twenty minutes.

Conclusion: Substantial variation exists in how women with MBC rate the importance of specific PRO domains and items within each domain. Importantly, “physical symptoms” was not the top concern for half of the interviewed patients. This is an important finding, given that previous published studies of patient-reported outcomes have focused on one domain, such as symptoms and side effects or the financial burden of treatment. Our findings support the development of multi-dimensional tools for the collection of PROs. Although toxicity and physical symptoms are of utmost concern, clinicians should not neglect other dimensions of quality of life in women with MBC.

Citation Format: Mougalian SS, Aminawung JA, Presley C, Canavan ME, Holland ML, Hu X, Gross CP. Prioritization of patient reported outcomes by women with metastatic breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-14-06.

Low birthweight in second children after nurse home visiting

OBJECTIVE

To examine low birthweight and preterm birth of second children born to home-visited first-time mothers.

SUBJECTS

Women were previously recruited for a randomized controlled trial of the home visiting model disseminated as Nurse-Family Partnership. 512 of these women had second children within 18 years of the first child's birth, and were included in our sample.

RESULTS

The intervention was associated with a lower likelihood of low birthweight for second children (odds ratio: 0.51, 95% CI: 0.27, 0.97), an effect apparent only if the first-born had low birthweight and mediated by close birth spacing. These moderation and mediation patterns were similar in the preterm birth outcome.

CONCLUSION

A home visiting program provided for first-born children reduced low birthweight for second-born children, if the first-born had low birthweight. This finding implies a broader impact than previously documented, because few studies have included these second children.

State-Level Population Estimates of Individuals Subject to and Not Meeting Proposed Medicaid Work Requirements

This cross-sectional analysis of 2014 Survey on Income and Program Participation data estimates the potential impact of work requirements on Medicaid eligibility on a state-by-state basis.

Stressful Life Events in Young Adults With Type 1 Diabetes in the U.S. T1D Exchange Clinic Registry

PURPOSE

The purpose was to test associations among stressful life events, frequency of missed insulin doses, and glycemic control in young adults with type 1 diabetes (T1D).

DESIGN

The study was a cross-sectional descriptive secondary analysis.

METHODS

Data from 2,921 participants (ages 18-26 years) in the U.S. T1D Exchange Clinic Registry were analyzed. Report of a stressful life event was defined as one or more positive responses on a 17-item stressful life events index and defined as a dichotomous variable (yes or no). Frequency of missed insulin doses was measured using a single self-report item and collapsed into two levels (fewer than three times a week, three or more times a week). The glycosylated hemoglobin (A1c) level recorded at the time of enrollment was used to assess glycemic control.

FINDINGS

Nearly half (48.6%) of the participants reported having a stressful life event during the previous year. The most frequently reported stressful life events were problems at work or school (16.1%), serious arguments with family members or a close friend (15.2%), and financial problems in the family (13.8%). Compared to the participants not reporting stressful life events, those who reported stressful life events were more likely to be older, female, with a higher educational attainment level, and not working or unemployed. Those who reported a stressful life event were more likely than those who did not to say they typically missed insulin doses at least three times a week and less likely to say they typically missed insulin doses fewer than three times a week (p < .001 adjusted for age, sex, race or ethnicity, educational attainment level, duration of T1D diagnosis, and insulin delivery method). Mean A1c level was higher for the group who reported having a stressful life event in the past 12 months compared to the group who did not (8.7 ± 1.8% vs. 8.2 ± 1.6%; adjusted p < .001). The results of a mediation analysis suggest that the measure of frequency of missed insulin doses may be a mediator of the relationship between recent stressful life events and glycemic control (Sobel test: ab = .841, 95% confidence interval = 0.064-1.618).

CONCLUSIONS

These findings suggest that, for young adults with T1D, the experience of stressful life events may increase their risk for poorer glycemic control, possibly by disrupting adherence with insulin doses.

CLINICAL RELEVANCE

Further exploration of these relationships may allow for the potential for identifying those at risk and assisting them with more positive approaches to managing stressful events.

Attitudes and Practices Related to Clinical Alarms: A Follow-up Survey

BACKGROUND

Alarm fatigue is a widely acknowledged patient safety concern in hospitals. In 2013, The Joint Commission issued a National Patient Safety Goal on Alarm Management, making addressing alarm management a priority. To capture changes in attitudes and practices related to alarms, the Healthcare Technology Foundation conducted and reported findings from national online surveys in 2006 and 2011 and completed a third survey in 2016.

OBJECTIVES

The goal of the 2016 survey was to identify how hospital practices and clinicians' perceptions of alarms have changed since 2006.

METHODS

The online survey was distributed via national health care organizations during a 2-month period. Results of the 2016 survey (N = 1241) were compared with results of the 2006 and 2011 surveys by using χ² and Kruskal-Wallis analyses.

RESULTS

Responses were significantly different for almost all items across the 3 surveys. Respondents in 2016 were more likely to agree that nuisance alarms occur frequently and disrupt patient care and were less likely to agree that clinical staff responds quickly to alarms. Compared with respondents in 2011, those in 2016 were almost twice as likely to report that their hospitals had experienced adverse events related to alarms in the past 2 years. However, in 2016 a much higher proportion of respondents indicated that their hospitals had implemented alarm improvement initiatives.

CONCLUSIONS

Although survey findings show disappointing trends in the past 10 years, including worsening perceptions of nuisance alarms and more alarm-related adverse events, the increase in alarm improvement initiatives is encouraging.

A Home Visiting Parenting Program and Child Obesity: A Randomized Trial

BACKGROUND

Young children living in historically marginalized families are at risk for becoming adolescents with obesity and subsequently adults with increased obesity-related morbidities. These risks are particularly acute for Hispanic children. We hypothesized that the prevention-focused, socioecological approach of the "Minding the Baby" (MTB) home visiting program might decrease the rate of childhood overweight and obesity early in life.

METHODS

This study is a prospective longitudinal cohort study in which we include data collected during 2 phases of the MTB randomized controlled trial. First-time, young mothers who lived in medically underserved communities were invited to participate in the MTB program. Data were collected on demographics, maternal mental health, and anthropometrics of 158 children from birth to 2 years.

RESULTS

More children in the intervention group had a healthy BMI at 2 years. The rate of obesity was significantly higher (P < .01) in the control group (19.7%) compared with the intervention group (3.3%) at this age. Among Hispanic families, children in the MTB intervention were less likely to have overweight or obesity (odds ratio = 0.32; 95% confidence interval: 0.13-0.78).

CONCLUSIONS

Using the MTB program, we significantly lowered the rate of obesity among 2-year-old children living in low-socioeconomic-status communities. In addition, children of Hispanic mothers were less likely to have overweight or obesity at 2 years. Given the high and disproportionate national prevalence of Hispanic young children with overweight and obesity and the increased costs of obesity-related morbidities, these findings have important clinical, research, and policy implications.

Breastfeeding and Exposure to Past, Current, and Neighborhood Violence

Objectives Breastfeeding has short- and long-term health benefits for children and mothers, but US breastfeeding rates are suboptimal. Exposure to violence may contribute to these low rates, which vary by race/ethnicity. We studied: (1) whether patterns of violence exposure differ by race/ethnicity and (2) whether these patterns are associated with breastfeeding outcomes. Methods We conducted a secondary analysis of data drawn from self-report surveys completed by a convenience sample of low-income postpartum women (n = 760) in upstate New York. Latent class analysis was used to identify groups of women with similar responses to seven violence measures, including childhood physical and/or sexual violence, experience of partner violence during or just after pregnancy (physical, emotional, verbal), and neighborhood violence (perceived or by ZIP code). Logistic regression and survival analysis were utilized to determine if classes were associated with breastfeeding initiation, duration, and exclusivity, controlling for demographics. Results Exposure to at least one form of violence was high in this sample (87%). We identified 4 classes defined by violence exposure (combining current and historical exposures). Violence exposure patterns differed between racial/ethnic groups, but patterns were inconsistently associated with breastfeeding plans or outcomes. For White women, history of violence exposure increased the likelihood of earlier breastfeeding cessation. By contrast, among Black women, history of violence exposure increased the likelihood of having a breastfeeding plan and initiating breastfeeding. Conclusions for Practice Some differences between violence exposure classes are likely due to the correlation between race/ethnicity and socioeconomic status in the community studied. Additional studies are warranted to better understand how exposure to violence is related to breastfeeding and how best to support women making decisions about intention, initiation, and duration of breastfeeding.

Effect of Gestational Weight Gain and Prepregnancy Body Mass Index in Adolescent Mothers on Weight and Body Mass Index of Adolescent Offspring

PURPOSE

The purpose of the study was to examine the association of the gestational weight gain and prepregnancy body mass index (BMI) of low-income adolescent mothers with the risk of their children being overweight and/or obese in late adolescence.

METHODS

Study subjects were low-income, primiparous adolescents (n = 360) who self-identified as black and participated in the New Mothers Study in Memphis, Tennessee, and their children. Gestational weight gain was examined as a continuous variable and also categorized into overgain, recommended gain, and undergain following the 2009 Institute of Medicine guidelines. The effects of maternal prepregnancy BMI percentiles and calculated BMI were also considered. Multivariable logistic and linear regression models were used. The main outcome measures were offspring overweight, obesity, and BMI.

RESULTS

Thirty-nine percent of offspring were overweight or obese. Higher maternal gestational weight gain increased the risk for offspring overweight and obesity. There was an interaction between gestational weight gain and prepregnancy BMI: offspring of mothers with a BMI percentile ≤76 were at greater risk of obesity with higher maternal weight gain. If mothers with a BMI percentile between the 29th and 83rd percentiles overgained, offspring were at greater risk for overweight. Using calculated BMIs, if a mother's BMI was ≤26 kg/m², offspring risk for obesity was greater with higher gestational weight gain.

CONCLUSIONS

High gestational weight gain had a larger effect on offspring overweight and obesity if maternal prepregnancy BMI percentile was ≤76. The gestational weight gain of primiparous adolescents who self-identified as black had an effect on offspring weight.

Patterns of visit attendance in the nurse-family partnership program

OBJECTIVES

We examined visit attendance patterns in the Memphis trial of the Nurse-Family Partnership and associations between these patterns and family characteristics, outcomes, and treatment-control differences in outcomes.

METHODS

We employed repeated measures latent class analysis to identify attendance patterns among the 228 mothers assigned to receive home nurse visits during pregnancy and until the child was aged 2 years, associated background characteristics, outcomes, and treatment-control differences by visit class. Home visits were conducted from June 1990 to March 1994. We collected outcome data from May 1992 to April 1994 and July 2003 to December 2006.

RESULTS

We identified 3 visit attendance patterns. High attenders (48%) had the most visits and good outcomes. Low attenders (33%) had the most education and the best outcomes. Increasing attenders (18%) had the fewest completed visits during pregnancy, the poorest intake characteristics, and the poorest outcomes. Treatment-control group differences varied by class, with high and low attenders having better outcomes on some measures than did their control group counterparts.

CONCLUSIONS

Three patterns were associated with distinct groups of mothers with different long-term outcomes. Further examination and use of patterns to classify mothers and prioritize resources may improve efficiency in the Nurse-Family Partnership.

Women's reasons for attrition from a nurse home visiting program

OBJECTIVE

To describe mothers' reasons for leaving a home visiting program early.

DESIGN

Qualitative descriptive study using semistructured interviews of mothers who dropped out of the Nurse-Family Partnership (NFP) and two focus groups with nurses and nurse supervisors at an NFP site.

SETTING

A New York State site of a NFP home visitation program for low-income new mothers designed to improve the physical and emotional care of children.

PARTICIPANTS

Participants included 21 mothers, 8 nurses, and 3 nurse-supervisors.

METHODS

Semistructured interviews and focus groups were used to collect data, which were analyzed using content analysis.

RESULTS

The program was not perceived to fit a mother's needs when she was overwhelmed with other responsibilities, the nurse did not meet her expectations, the content was not of interest, or the mother did not desire visits after the infant was born. Nurses and mothers described the need for mothers to have organizational and communication skills, such as keeping track of appointments, calling to reschedule, articulating needs, and asking for assistance. Disruptive external influences included nurse turnover and unstable living situations, including frequent moves and crowded housing. Each of these types of barriers had potential to interact with the others, creating complex combinations of challenges to retention.

CONCLUSION

NFP retention might be improved by reframing program relevance to individual mothers and increasing maternal organizational and communication skill development.

Gestational weight gain of pregnant African American adolescents affects body mass index 18 years later

OBJECTIVE

To determine if gestational weight gain (GWG) in adolescents is associated with long-term weight increases 12 years and 18 years after delivery of a first child and the differential effects of weight gain during pregnancy that is inadequate, the appropriate amount, and excessive based on the 2009 Institute of Medicine (IOM) recommendations.

DESIGN

Secondary data analysis of data from a randomized controlled trial.

SETTING

Memphis, Tennessee.

PARTICIPANTS

Two hundred ninety-eight (298) primiparous low-income Black women who were adolescents at the time of their first pregnancies.

METHOD

Linear regression was used to examine the relationship between body mass index (BMI) at 12 and 18 years postdelivery and GWG, parity, prepregnancy BMI, and smoking.

RESULTS

The total sample experienced a significant BMI increase from prepregnancy to 12 years and 18 years postdelivery. More than 50% of the women had a BMI increase greater than 10 kg/m(2) . By 18 years postdelivery, 85% were overweight or obese. Prepregnancy BMI and GWG had a positive significant effect on BMI 12 and 18 years later, whereas smoking had a negative effect. Those who gained excessive weight based on the IOM recommendations had a significantly higher BMI compared with those who gained appropriately.

CONCLUSION

Gestational weight gain had long-term effects on BMI in a minority adolescent population. Excessive pregnancy weight gain is likely to contribute to long-term weight retention, especially if adolescents are overweight or obese when they become pregnant with their first children. Intervention during pregnancy to limit GWG has the potential of limiting long-term negative health consequences that result from overweight and obesity in minority women.

Sirtuin 3 regulates mouse pancreatic beta cell function and is suppressed in pancreatic islets isolated from human type 2 diabetic patients

AIMS/HYPOTHESIS

Sirtuin (SIRT)3 is a mitochondrial protein deacetylase that regulates reactive oxygen species (ROS) production and exerts anti-inflammatory effects. As chronic inflammation and mitochondrial dysfunction are key factors mediating pancreatic beta cell impairment in type 2 diabetes, we investigated the role of SIRT3 in the maintenance of beta cell function and mass in type 2 diabetes.

METHODS

We analysed changes in SIRT3 expression in experimental models of type 2 diabetes and in human islets isolated from type 2 diabetic patients. We also determined the effects of SIRT3 knockdown on beta cell function and mass in INS1 cells.

RESULTS

SIRT3 expression was markedly decreased in islets isolated from type 2 diabetes patients, as well as in mouse islets or INS1 cells incubated with IL1β and TNFα. SIRT3 knockdown in INS1 cells resulted in lowered insulin secretion, increased beta cell apoptosis and reduced expression of key beta cell genes. SIRT3 knockdown also blocked the protective effects of nicotinamide mononucleotide on pro-inflammatory cytokines in beta cells. The deleterious effects of SIRT3 knockdown were mediated by increased levels of cellular ROS and IL1β.

CONCLUSIONS/INTERPRETATION

Decreased beta cell SIRT3 levels could be a key step in the onset of beta cell dysfunction, occurring via abnormal elevation of ROS levels and amplification of beta cell IL1β synthesis. Strategies to increase the activity or levels of SIRT3 could generate attractive therapies for type 2 diabetes.

The influence of social-developmental context and nurse visitation intervention on self-agency change in unmarried adolescent mothers

Pregnancy among unmarried adolescents has been linked to negative personal control beliefs. In contrast, self-agency beliefs about control over future possibilities have been linked to delay in subsequent childbearing. In this secondary analysis, we examined factors associated with self-agency change in 429 unmarried adolescent mothers from intervention and control groups of a nurse home visitation study. Adolescent mothers who participated in a sustained relationship with a nurse made greater gains in self-agency than did control group mothers (p = .034). Adolescents with lower cognitive ability who were behind their age-appropriate grade level in school made the greatest self-agency gains.

Mother-child interactions and the associations with child healthcare utilization in low-income urban families

Studies have demonstrated that low-income families often have disproportionately high utilization of emergency department (ED) and hospital services, and low utilization of preventive visits. A possible contributing factor is that some mothers may not respond optimally to their infants' health needs, either due to their own responsiveness or due to the child's ability to send cues. These mother-child interactions are measurable and amenable to change. We examined the associations between mother-child interactions and child healthcare utilization among low-income families. We analyzed data from the Nurse-Family Partnership trial in Memphis, TN control group (n = 432). Data were collected from child medical records (birth to 24 months), mother interviews (12 and 24 months postpartum), and observations of mother-child interactions (12 months postpartum). We used logistic and ordered logistic regression to assess independent associations between mother-child interactions and child healthcare utilization measures: hospitalizations, ED visits, sick-child visits to primary care, and well-child visits. Better mother-child interactions, as measured by mother's responsiveness to her child, were associated with decreased hospitalizations (OR: 0.51; 95% CI: 0.32, 0.81), decreased ambulatory-care-sensitive ED visits (OR: 0.65, 95% CI: 0.44, 0.96), and increased well-child visits (OR: 1.55, 95% CI: 1.06, 2.28). Mother's responsiveness to her child was associated with child healthcare utilization. Interventions to improve mother-child interactions may be appropriate for mother-child dyads in which child healthcare utilization appears unbalanced with inadequate primary care and excess urgent care. Recognition of these interactions may also improve the care clinicians provide for families.

Survey of Connecticut Nurse-Midwives

Descriptive data on nurse-midwifery income, workload, job definitions, employment benefits, and clinical practices are limited. Information about nurse-midwifery practice today is important for the growth of the profession and for future policy initiatives. A survey of nurse-midwives in Connecticut was conducted in 2005. This article reports state-specific data about income, workload, job definitions, employment benefits, and clinical issues, such as vaginal birth after cesarean. Full-time midwives in Connecticut worked an average of 77 hours per week, had a mean salary of 79,554 dollars, and 87% had on-call responsibilities. A "typical" Connecticut midwife had an "average" full-time work week consisting of two 24-hour call days and three 7-hour office days, seeing 19 to 24 patients per office day. Most held Master of Science in Nursing degrees, worked in physician-owned practices, and attended births in hospitals or medical centers. Health insurance, paid sick time, and retirement plans were offered to most respondents. Almost all respondents provide gynecologic, antepartum, and postpartum care, but few offer newborn care. There is significant variation in restrictions on midwives offering vaginal birth after cesarean and on length of scheduled appointments. Data on expanded practices, such as first-assisting caesarean sections and endometrial biopsies, are reported for the first time.

Effects of mass media coverage on timing and annual receipt of influenza vaccination among Medicare elderly

OBJECTIVE

To measure the association between mass media coverage on flu-related topics and influenza vaccination, regarding timing and annual vaccination rates, among the nationally representative community-dwelling elderly.

DATA SOURCE

Years 1999, 2000, and 2001 Medicare Current Beneficiary Survey.

STUDY DESIGN

Cross-sectional survival analyses during each of three influenza vaccination seasons between September 1999 and December 2001. The outcome variable was daily vaccine receipt. We measured daily media coverage by counting the number of television program transcripts and newspaper/wire service articles, including keywords of influenza/flu and vaccine/shot shortage/delay. All models' covariates included three types of media, vaccine supply, and regional/individual factors.

PRINCIPAL FINDINGS

Influenza-related reports in all three media sources had a positive association with earlier vaccination timing and annual vaccination rate. Four television networks' reports had most consistent positive effects in all models, for example, shifting the mean vaccination timing earlier by 1.8-4.1 days (p<.001) or increasing the annual vaccination rate by 2.3-7.9 percentage points (p<.001). These effects tended to be greater when reported in a headline rather than in text only and if including additional keywords, for example, vaccine shortage/delay.

CONCLUSIONS

Timing and annual receipt of influenza vaccination appear to be influenced by media coverage, particularly by headlines and specific reports on shortage/delay.

Cost-effectiveness of testing for breast cancer susceptibility genes

OBJECTIVES

Genetic mutations in breast cancer susceptibility genes BRCA1/2 are associated with an increased risk of breast/ovarian cancers. Cost-effective preventive measures are available for women who test positive. The objective of this study was to determine at what risk of mutation it is cost-effective to test women for BRCA1/2 mutations.

METHODS

A semi-Markov model accrued costs and quality-adjusted life years (QALYs) annually from the societal perspective. The estimates of health-care costs, life expectancy, likelihood of obtaining a mastectomy or oophorectomy, and patient preferences for treatment and certainty about their BRCA1/2 status were based on the literature.

RESULTS

At a 10% probability of mutation (the current guideline), the test strategy generated 22.9 QALYs over the lifetime and cost $118k, while the no-test strategy generated 22.7 QALYs and cost $117k. The incremental cost-effectiveness ratio of the test strategy was $9k and the differences between costs and effects were not substantial. The test strategy remained cost-effective to a probability of mutation of 0%, as long as utility gained from a negative test result was 0.006 or greater. These results were sensitive to the frequency of inconclusive test results and utility gain from a negative test result.

CONCLUSIONS

The costs and effectiveness of both the test and no-test strategies are very similar even when there is a small probability of mutation. Current guidelines, which can be used by insurance companies to refuse coverage, could deny some women a cost-effective approach. Further research to decrease the frequency of inconclusive results could improve the cost-effectiveness of this test.

Appropriate antibiotic use for acute otitis media: what consumers find using Web searches

The use of the Internet for health information is growing, but there is little control over the timeliness of updates or the accuracy of the information. Recent changes in recommendations for the treatment of acute otitis media were made in an effort to decrease the unnecessary use of antibiotics. We conducted a systematic review of Web sites to determine if consumers are likely to find appropriate information. Only 31% of relevant Web sites found explain the new "watch and wait" recommendation, and 41% include a recommendation to finish the full course of prescribed antibiotics. Web sites that include an update date, are reviewed by a physician, provide references, and have a nonprofit-type domain are more likely to contain updated information. Physicians should be aware that their patients might visit the office with expectations based on outdated information found on the Web. Organizations making recommendations should consider how to disseminate new information through the Web.

The multidrug transporter ABCG2 (BCRP) is inhibited by plant-derived cannabinoids

BACKGROUND AND PURPOSE

Cannabinoids are used therapeutically for the palliation of the adverse side effects associated with cancer chemotherapy. However, cannabinoids also inhibit both the activity and expression of the multidrug transporter, P-glycoprotein in vitro. Here we address the interaction of cannabinol (CBN), cannabidiol (CBD) and delta 9-tetrahydrocannabinol (THC) with the related multidrug transporter, ABCG2.

EXPERIMENTAL APPROACH

Cannabinoid inhibition of Abcg2/ABCG2 was assessed using flow cytometric analysis of substrate accumulation and ATPase activity assays. The cytotoxicity and chemosensitization by cannabinoids was determined with cell viability assays. Expression of cannabinoid and vanilloid receptors was assessed using reverse transcriptase polymerase chain reaction, and cannabinoid modulation of ABCG2 expression was examined using immunoblotting.

KEY RESULTS

CBN, CBD and THC increased the intracellular accumulation of the Abcg2/ABCG2 substrate, mitoxantrone, in an over-expressing cell line. The THC metabolite, (-)-11-nor-9-carboxy-delta 9-THC was much less potent. The plant cannabinoids inhibited both basal and substrate stimulated ATPase activity of human ABCG2. Cannabinoid cytotoxicity occurred in the absence of known cannabinoid cell surface receptors, and only at concentrations higher than those required for Abcg2/ABCG2 inhibition. Sub-toxic concentrations of the cannabinoids resensitized the overexpressing cell line to the cytotoxic effect of Abcg2/ABCG2 substrates, mitoxantrone and topotecan. This occurred in the absence of any effect on ABCG2 expression.

CONCLUSIONS AND IMPLICATIONS

Cannabinoids are novel Abcg2/ABCG2 inhibitors, reversing the Abcg2-mediated multidrug-resistant phenotype in vitro. This finding may have implications for the co-administration of cannabinoids with pharmaceuticals that are ABCG2 substrates.

The effects of cannabinoids on P-glycoprotein transport and expression in multidrug resistant cells

Cannabis is the most widely used illicit drug in the world. Cannabinoids are used therapeutically by some patients as they have analgesic, anti-emetic and appetite stimulant properties which palliate adverse symptoms. Use of these agents in an oncology setting raises the question of whether they act to modulate the effectiveness of concurrently administered anti-cancer drugs. The transporter, P-glycoprotein (P-gp) confers multiple drug resistance (MDR) by effluxing a diverse array of anti-cancer agents. This study was undertaken to examine the effect of cannabinoids on P-gp. Unlike the known P-gp inhibitor, PSC833, short 1h exposure to three plant-derived cannabinoids, cannabinol (CBN), cannabidiol (CBD) and Delta(9)-tetrahydrocannabinol (THC) and the synthetic cannabinoid receptor agonist, WIN55, 212-2 (WIN) did not inhibit the efflux of the P-gp substrate Rhodamine 123 (Rh123) in either a drug-selected human T lymphoblastoid leukaemia cell line (CEM/VLB(100)) or in a mouse fibroblast MDR1 transfected cell line (77.1). However, in CEM/VLB(100) cells, prolonged 72 h exposure to the cannabinoids, THC and CBD, decreased P-gp expression to a similar extent as the flavonoid, curcumin (turmeric). This correlated with an increase in intracellular accumulation of Rh123 and enhanced sensitivity of the cells to the cytotoxic actions of the P-gp substrate, vinblastine. Taken together, these results provide preliminary evidence that cannabinoids do not exacerbate P-gp mediated MDR. Further, plant-derived cannabinoids are moderately effective in reversing MDR in CEM/VLB(100) cells by decreasing P-gp expression.

Social-emotional characteristics of preschool-aged children referred for Child Find screening and assessment: a comparative study

Differences in parent ratings of social-emotional behavior among young children referred for Child Find screening and assessment and nonreferred children were examined. Participants included 64 preschool-aged children referred for Child Find screening and assessment (CF group) and 64 preschool-aged children without such referrals or identified disabilities (Comparison group). The Comparison group was matched to the CF group by gender and age, using a randomized block procedure. Social-emotional behavior of the participants was assessed using parent ratings on the Preschool and Kindergarten Behavior Scale (PKBS), a social skills and problem-behavior rating scale for use with children aged 3-6. PKBS scores were found to classify the participants into their respective groups with a substantial degree of accuracy. Significant differences were found between the two groups in social skills and problem behavior scores, with the CF participants evidencing greater social skills deficits and problem behavior excesses than the participants in the Comparison group. An inspection of frequency distributions of the two groups revealed that children referred for Child Find screening were approximately four times as likely to have significant social deficits, and approximately six times as likely to have significant problem-behavior excesses than their nonreferred comparison peers. New validity evidence for the PKBS is provided, along with recommendations for future research and clinical practice with the Child Find population.

Social-emotional behavior of preschool-age children with and without developmental delays

Differences in parent and teacher ratings of social-emotional behavior among young children with developmental delays and those without significant developmental problems were examined. Participants included 198 preschool-age children identified as having a developmental delay (DD group) and 198 preschool-age children without significant developmental problems (Comparison group) who were matched to the DD group by age and gender, using a randomized block procedure. Parent and teacher perceptions of social-emotional behavior of the participants were assessed using the Preschool and Kindergarten Behavior Scale (PKBS), a social skills and problem behavior rating scale for the use with young children. PKBS scores were found to classify the participants into their respective groups with a substantial degree of accuracy. Statistically significant differences in social skills and problem behavior scores between the two groups were found, with the DD participants evidencing greater social skills deficits and problem behavior excesses than the Comparison group. Individuals in the DD group were found to be four to five times more likely to have significant social skills deficits and problem behavior excesses than individuals in the Comparison group. The critical social-emotional behaviors separating the two groups appeared to be social interaction and independence skills, and socially withdrawn and isolated behavior patterns. New validity evidence for the PKBS is discussed, as are future needs pertaining to research and clinical practice in the area of social-emotional behavior of young children with developmental delays.

Effect of the oxytocin antagonist atosiban (1-deamino-2-D-tyr(OET)-4-thr-8-orn-vasotocin/oxytocin) on nocturanl myometrial contractions, maternal cardiovascular function, transplacental passage, and fetal oxygenation in the pregnant baboon during the last third of gestation

The oxytocin antagonist, atosiban (1-deamino-2-D-tyr(OET)-4-thr-8-orn-vasotocin/oxytocin), was infused i.v. to chronically instrumented pregnant baboons in the last third of pregnancy. Atosiban (6 microg/kg per min) inhibited myometrial electromyographic activity associated with spontaneous myometrial contractions that occurred around the onset of darkness between 134 and 162 days gestation (term 180 days gestation). The effect of atosiban on maternal heart rate was minimal. Maternal blood pressure remained unaltered during atosiban infusion. Fetal carotid arterial PO2 was unchanged during a 2-h infusion of atosiban. Transplacental passage of atosiban from mother to fetus was assessed at cesarean section under halothane anesthesia in four baboons and in two chronically instrumented fetuses in the absence of anesthesia. The maternal:fetal concentration gradient ranged from 9.2 to 22.8. Maternal atosiban clearance rates were 9.2-16.9 ml/kg per min. In conclusion, atosiban was very effective at inhibiting spontaneously occurring nocturnal myometrial contractions during the last third of gestation in the pregnant baboon. Although atosiban crosses the placenta relatively freely, there was no effect on fetal oxygenation.

The pharmacokinetics of the oxytocin antagonist atosiban in pregnant women with preterm uterine contractions

OBJECTIVE

Our purpose was to evaluate the pharmacokinetics of atosiban, an oxytocin antagonist, during and after intravenous infusion in pregnant patients having at least six contractions per hour. The relationship between atosiban infusion and uterine activity was also assessed.

STUDY DESIGN

Plasma samples from eight pregnant patients treated with intravenous atosiban (300 micrograms/min for 6 to 12 hours) were analyzed for atosiban concentration by a specific radioimmunoassay procedure. Contraction rate data were obtained by external tocodynamometry for 1 hour before the infusion and during the subsequent infusion.

RESULTS

The average steady-state plasma concentrations of patients receiving intravenous atosiban were 442 +/- 73 ng/ml (mean +/- SD), with steady state achieved by 1 hour after the start of the infusion. After the completion of the infusion, plasma concentrations declined rapidly in a biexponential manner with initial and terminal half-life estimates of 13 +/- 3 and 102 +/- 18 minutes, respectively. The effective half-life was 18 +/- 3 minutes. The plasma clearance of atosiban was relatively high (42 L/hr) and the volume of distribution (approximately 18 L) was consistent with distribution into extracellular fluid. Of the seven patients evaluated for uterine activity, the mean contraction rate decreased by 75% during the third hour of treatment and remained low until treatment termination.

CONCLUSION

On the basis of earlier published reports, the pharmacokinetics of atosiban in pregnant patients are similar to those in nonpregnant women. Although the patient population was small, a consistent reduction in uterine activity was observed during atosiban infusion.

Placental passage of the oxytocin antagonist atosiban

OBJECTIVE

We wanted to determine the degree of placental transfer of atosiban (Antocin), an oxytocin antagonist, in pregnant women at term. We also assessed the effects of the infusion on umbilical cord blood gases at birth and the maternal hematocrit drop after cesarean section.

STUDY DESIGN

Eight women undergoing elective cesarean section at term were studied. Each received an infusion of 300 micrograms/min of atosiban over 208 to 443 minutes; the infusion was continued up to the time of cord clamping. Uterine vein and umbilical blood samples were obtained simultaneously. They were assayed by specific radioimmunoassay. Cord blood gases were obtained and compared with those from a control group of women undergoing elective cesarean section.

RESULTS

The mean (+/- SD) maternal uterine vein concentration was 331.9 +/- 42.9 ng/ml, compared with 42 +/- 13 ng/ml in the umbilical vein (p < 0.05). The mean maternal/fetal was 12 +/- 0.03, which was not affected by the length of infusion. There was no significant difference in the hematocrit drop between the cesarean delivery groups: 5.9 +/- 0.4 for the control group versus 5.8 +/- 1.1 for the atosiban group (p > 0.1). The mean cord pH was 7.27 for the atosiban group versus 7.27 for the control group (n = 141) (p > 0.1). One year follow-up of the infants (n = 7) was normal.

CONCLUSIONS

Our results show minimal placental transfer of atosiban. Drug levels did not increase with longer infusions, and no effect was seen on umbilical cord gases. Administration of atosiban even at high doses up to the time of delivery did not increase maternal blood loss at cesarean section.