Recruitment and retention of pregnant women in prospective birth cohort studies: A scoping review and content analysis of the literature

Why do patients take part in research? An updated overview of systematic reviews of psychosocial barriers and facilitators

BACKGROUND

Efficient, equitable health research depends on understanding why people decide to take part. The aims of this overview were to update the version published in 2020, identifying psychosocial influences on participation and mapping them to recruitment research and psychological theory.

METHODS

Searches were undertaken in February 2024. Qualitative, quantitative, and mixed-methods systematic reviews were identified, without language or date limits. Methodological quality was rated using AMSTAR-2, and low-quality reviews were excluded. Barriers and facilitators were identified inductively and mapped to the Theoretical Domains Framework (TDF) and COM-B model, and to empirical recruitment research.

RESULTS

The update included 70 reviews, including 44 new reviews, covering a breadth of populations and settings, and drawing on 1940 primary studies (1428 unique). We identified 15 facilitators, most commonly: altruism, potential for personal benefit and trust. Incentives and convenient, low-burden research were also facilitators. Another 10 facilitators were new to this update. There were 16 barriers, most commonly: perceived risk, practical difficulties, and distrust of researchers. Many barriers applied to specific designs, particularly randomised trials. Factors that were barriers or facilitators include the influence of others and information quality. Barriers and facilitators were coded to the Motivation and Opportunity components of the TDF, particularly knowledge and social influences; only two factors were coded to a Capability. Psychosocial influences and empirical recruitment research had some overlap, but some barriers and facilitators had not been evaluated.

CONCLUSIONS

Common barriers and facilitators to research participation were identified, some new to this update, which could be addressed through targeted recruitment strategies to increase the efficiency and generalisability of primary research. Factors affecting participation are not only personal; they are also normative and social. The priorities are to change the ways we recruit to research (perhaps tested in SWATs) and identify barriers and facilitators in areas not well covered in current research.

TRIAL REGISTRATION

PROSPERO CRD42017062738. Registered on April 2017.

Child-Centrism as an Adaptive Parenting Style: A Prospective Study in Motherhood from Women's Life Satisfaction Including Cognitive-Emotional Resources

BACKGROUND

Child-centrism refers to a parenting style where parents prioritize children's needs above their own. Early research suggested that it could harm parental well-being, yet recent findings indicate that mothers adopting this style may experience greater psychological well-being and meaning in child-rearing. This study examines child-centrism as a complex, context-dependent style and aims to clarify its adaptive or non-adaptive nature through a prospective, longitudinal approach.

METHODS

A four-wave design included 231 mothers assessed at (T1) third trimester of pregnancy, (T2) eight weeks postpartum, (T3) five months postpartum, and (T4) five years postpartum. Self-reported measures included life satisfaction (T1), maternal self-efficacy (T2), positive affect (T3), and child-centrism (T4). Sociodemographic data (age, family status, education, income, working) were also collected. Statistical analyses tested a serial mediation model.

RESULTS

Life satisfaction at T1 significantly predicted maternal self-efficacy at T2 (p = 0.002), which in turn enhanced positive affect at T3 (p < 0.001). Positive affect at T3 then positively influenced child-centrism at T4 (p = 0.023). However, life satisfaction did not directly affect child-centrism (p = 0.970), indicating a sequential mediation pathway rather than a direct link.

CONCLUSIONS

These findings highlight that higher prenatal life satisfaction indirectly fosters an adaptive form of child-centrism through maternal self-efficacy and positive affect. Integrating motherhood into a woman's sense of identity appears to be a protective factor, promoting healthier cognitive and affective parenting resources. Preventive interventions could focus on strengthening women's life satisfaction and self-efficacy early in pregnancy, thereby enhancing affective well-being and potentially leading to a more meaningful, child-centric parenting style. Further research should include broader maternal and child well-being indicators.

Barriers and strategies for recruitment of pregnant women in contemporary longitudinal birth cohort studies

BACKGROUND

Pregnancy and birth cohort studies are essential for studying the social and biological determinants of human health, yet racial and ethnic minority populations are underrepresented due to low recruitment and retention rates. Remote data collection has potential to improve recruitment of underrepresented populations. The aims of this descriptive qualitative study were to explore the perspectives of pregnant and postpartum women about the barriers and facilitators to enrolling themselves, their child, and their partner in a longitudinal birth cohort study, identify data collection strategies to address barriers, and generate recommendations for future cohort studies.

METHODS

Online focus groups and in-person interviews in English and Spanish were conducted between August and November 2022 with pregnant and postpartum women. Participants were recruited from Black and Hispanic serving obstetric clinics and community-based health and social organizations to ensure a racially and ethnically diverse sample. Analysis was conducted using an inductive thematic approach.

RESULTS

60 women participated in 10 focus groups and 11 interviews. Five themes emerged: challenges in committing time and resources to a research study; utility of compensation and resources; fears that research procedures would negatively impact child; concerns regarding data privacy and children's consent; and benefits for their family, community, and society. Black participants voiced concern about historical discrimination in science and mistrust of research, but also wanted to increase Black representation in research for future generations. Spanish-speaking participants expressed hesitancy related to fear of child injury and misuse of data. Women felt their partners would be reluctant to participate, but that incentives such as parental education would be motivating. Participants liked the flexibility of remote data collection in easing logistical challenges to participation but also expressed importance of personal study contact for facilitating access to resources, enhancing trust in the research process, and motivating retention. Participants also expressed the importance of transparency in data collection procedures and communication on study progress.

CONCLUSIONS

Leveraging technological advances in remote data collection may reduce some challenges to recruitment of women and families to birth cohort studies. However, building and maintaining trust among communities with engagement, transparency, and communication is critical for recruitment of underrepresented populations.

Advancing birth cohort studies using administrative and other research-independent data repositories: Opportunities and challenges

The birth cohort study design is an essential epidemiologic tool for investigating the developmental origins of health and disease. Birth cohorts have greatly improved the etiologic understanding of asthma and allergic diseases, setting the stage for advancements in translational interventions. Increasingly, investigators leverage data repositories that have been compiled and maintained independently of research investigations (administrative data) to establish large birth cohorts or to augment data generated through active participant interaction. In many cases, administrative data can greatly enhance the capacity of birth cohorts to achieve their scientific goals. However, investigators must be wary of common pitfalls and carefully consider whether administrative data are well suited to the scientific inquiry. This article reviews the strengths and challenges of using administrative data and the pragmatic solutions that have been developed to optimize their use in birth cohorts. As birth cohorts continue to play an important role in understanding the etiology of early-life disease, unleashing the power of administrative data will greatly assist in this scientific process.

Substance Misuse, Executive Function, and Young Adult Intimate Partner Violence: Direct and Indirect Pathways

Intimate partner violence (IPV) is a significant issue in young adult relationships, with immediate and long-term health and well-being consequences. The factors contributing to IPV are complex and span from the level of individual neurobiology to the wider socioecological system. The interplay across these domains in predicting IPV has been understudied. We, therefore, aimed to examine the factors contributing to IPV risk among young adults, adopting a holistic approach considering direct and indirect contributions of socioecological influences in a cohort of high-risk subjects. Data were from a longitudinal birth cohort established in 1991 comparing the developmental trajectories of individuals prenatally exposed to substances including cocaine and nonexposed individuals. Using data from a subsample of 206 participants followed between 2010 and 2020, we implemented path analysis to examine direct and indirect pathways between prenatal drug exposure (PDE) and young adult IPV. We considered the contributions of childhood maltreatment, maternal education, ethnicity, early adolescent substance use, and late adolescent executive function. Sex-specific effects were also explored. There were no significant direct or indirect associations between PDE and IPV. There was evidence of an indirect effect of low maternal education on IPV via effects on early adolescent substance use and subsequent effects on executive function in late adolescence. There was tentative evidence of an effect of ethnicity on IPV risk and of sex differences in the pathways contributing to IPV risk among males and females. We highlight the importance of executive function in young adult IPV risk and suggest considering maternal education and early adolescent substance use as additional contributors to IPV risk. Preventing IPV among young adults may involve enhancing executive functioning and preventing early substance misuse. When examining pathways contributing to IPV risk, it is necessary to adopt a framework integrating the wider socioecological environment.

Engaging, recruiting, and retaining pregnant people from marginalized communities in environmental health cohort studies: a scoping review

OBJECTIVES

To identify barriers to and strategies for improving the representation of pregnant people from marginalized communities in pregnancy cohort studies that measure environmental chemicals.

METHODS

Guided by the Arksey O'Malley and Levac Frameworks, we conducted a scoping review of peer-reviewed literature published between 2000 and 2022. Included studies discussed barriers and/or strategies related to engaging, recruiting, and retaining pregnant participants or participants of reproductive age from marginalized communities into environmental health research.

RESULTS

Twenty-nine peer-reviewed articles were included in the review. Overall, 31% (9/29) of the studies reported on engagement, recruitment, and retention of participants from racialized communities, 10% (3/29) reported on involvement of participants identifying as Indigenous, and 10% (3/29) of studies reported on participants living in households or areas of low socioeconomic status. We identified four key barriers: participant burden, social inequities, lack of trust, and lack of cultural relevance. We reported identified strategies to mitigate these barriers.

CONCLUSION

Although there is limited coverage in the literature on strategies to effectively engage people from marginalized communities in environmental health pregnancy cohort studies, our findings suggest that applying a health equity and social justice lens to research may help address barriers that exist at the individual, interpersonal, community, institutional, and policy levels. Findings from this review may have important implications for planning future pregnancy cohort studies and ensuring that communities who are disproportionately affected by environmental chemical exposures may be better represented in research and considered in policy decisions.

Factors associated with attrition in a diverse birth cohort study in Detroit, Michigan

Long-term birth cohorts are essential for studying health and disease over the life course. The retention of participants remains a challenge in study design. Previous research works on attrition are limited in length of follow-up time and lack of racial/ethnic diversity. Using data from the Wayne County Health, Environment, Allergy, and Asthma Longitudinal Study (WHEALS; United States cohort born between 2004 and 2007, n = 1258), we first performed longitudinal latent class analyses to identify patterns of participation spanning the prenatal period and six follow-up timepoints: 1, 6, 12, and 24 months; 3-6 years; and 10-12 years. Data collection included a combination of in-person visits, home visits, home specimen kits, and staff-administered questionnaires. We examined associations between baseline factors and participation class using multinomial logistic regression modeling, and with conditional inference modeling to identify variables most strongly associated with class. We identified four participation classes: high early participation with gradual loss-to-follow-up, sporadic participation, consistently high participation, and consistently low participation. Multiple baseline characteristics were associated with participation class. The "consistently high participation" class was disproportionately composed of participants who were older, were of higher education, had private insurance, had suburban residence, and were with higher income. Conditional inference trees identified maternal education, insurance, and income as most strongly associated with participation class. Through latent class modeling, we show that participants who were lost to follow-up fell into distinct groupings of participation. In the future, preparatory communications with those who are at the highest risk of study discontinuation may improve long-term retention.

Establishing a model of peer support for pregnant persons with a substance use disorder as an innovative approach for engaging participants in the healthy brain and child development study

The HEALthy Brain and Child Development (HBCD) Study, a multi-site prospective longitudinal cohort study, will examine human brain, cognitive, behavioral, social, and emotional development beginning prenatally and planned through early childhood. The goal is to recruit over 7000 caregiver-child dyads across the United States, with 25 % of the study population comprising children exposed in utero to substances to better understanding the effects of prenatal substance exposure on fetal and child development. However, barriers of mistrust for pregnant persons who are substance involved can create challenges to recruiting and retaining this population. The HBCD Study is utilizing a novel approach in research, the inclusion of support professionals (i.e. study navigators) as research team members to boost recruitment, engagement, and retention in this population and other marginalized and underrepresented groups. This article describes the conceptualization and early implementation of a support model utilizing certified peer support specialists, and the evolution to a broader study navigator model (SNM). Core skills, training, and support necessary for integrating such support professionals onto the research team are outlined. A reflection on challenges and next steps describes how the early implementation of the SNM encourages a paradigm shift in longitudinal research that humanizes and centers the participants.

Participant engagement and involvement in longitudinal cohort studies: qualitative insights from a selection of pregnancy and birth, twin, and family-based population cohort studies

BACKGROUND

Longitudinal cohort studies are pivotal to understand how socioeconomic, environmental, biological, and lifestyle factors influence health and disease. The added value of cohort studies increases as they accumulate life course data and expand across generations. Ensuring that participants stay motivated to contribute over decades of follow-up is, however, challenging. Participant engagement and involvement (PEI) aims to secure the long-term commitment of participants and promote researcher-participant interaction. This study explored PEI practices in a selection of pregnancy and birth, twin, and family-based population cohort studies.

METHODS

Purposive sampling was used to identify cohorts in Europe, Australia and New Zealand. Fourteen semi-structured digital interviews were conducted with cohort study representatives to explore strategies for participant recruitment, informed consent, communication of general and individual information to participants, data collection, and participant involvement. Experiences, resources allocated to PEI, and reflections on future PEI, were discussed. The interview data were analyzed using a content analysis approach and summary results were reviewed and discussed by the representatives.

RESULTS

The cohort studies used various strategies to recruit participants including support from health professionals and organizations combined with information on the studies' web sites and social media. New approaches such as intra-cohort recruitment, were being investigated. Most cohorts transitioned from paper-based to digital solutions to collect the participants' consent and data. While digital solutions increased efficiency, they also brought new challenges. The studies experimented with the use of participant advisory panels and focus groups to involve participants in making decisions, although their success varied across age and socio-economic background. Most representatives reported PEI resources to be limited and called for more human, technical, educational and financial resources to maximize the positive effects of PEI.

CONCLUSIONS

This study of PEI among well-established cohort studies underscores the importance of PEI for project sustainability and highlights key factors to consider in developing PEI. Our analysis shows that knowledge gaps exist regarding which approaches have highest impact on retention rates and are best suited for different participant groups. Research is needed to support the development of best practices for PEI as well as knowledge exchange between cohorts through network building.

Biospecimens in the HEALthy Brain and Child Development (HBCD) Study: Rationale and protocol

The HEALthy Brain and Child Development (HBCD) Study, a multi-site prospective longitudinal cohort study, will examine human brain, cognitive, behavioral, social, and emotional development beginning prenatally and planned through early childhood. The longitudinal collection of biological samples from over 7000 birthing parents and their children within the HBCD study enables research on pre- and postnatal exposures (e.g., substance use, toxicants, nutrition), and biological processes (e.g., genetics, epigenetic signatures, proteins, metabolites) on neurobehavioral developmental outcomes. The following biosamples are collected from the birthing parent: 1) blood (i.e., whole blood, serum, plasma, buffy coat, and dried blood spots) during pregnancy, 2) nail clippings during pregnancy and one month postpartum, 3) urine during pregnancy, and 4) saliva during pregnancy and at in-person postnatal assessments. The following samples are collected from the child at in-person study assessments: 1) saliva, 2) stool, and 3) urine. Additionally, placenta tissue, cord blood, and cord tissue are collected by a subset of HBCD sites. Here, we describe the rationale for the collection of these biospecimens, their current and potential future uses, the collection protocol, and collection success rates during piloting. This information will assist research teams in the planning of future studies utilizing this collection of biological samples.

Recruitment and retention strategies to promote research engagement among caregivers and their children: A scoping review

Long-term health and developmental impact after in utero opioid and other substance exposures is unclear. There is an urgent need for well-designed, prospective, long-term observational studies. The HEALthy Brain and Child Development Study aims to address this need. It will require optimizing recruitment and retention of caregivers and young children in long-term research. Therefore, a scoping review of original research articles, indexed in the PubMed database and published in English between January 1, 2010, and November 23, 2023, was conducted on recruitment and retention strategies of caregiver-child (≤6 years old) dyads in observational, cohort studies. Among 2,902 titles/abstracts reviewed, 37 articles were found eligible. Of those, 29 (78%) addressed recruitment, and 18 (49%) addressed retention. Thirty-four (92%) articles focused on strategies for facilitating recruitment and/or retention, while 18 (49%) described potentially harmful approaches. Recruitment and retention facilitators included face-to-face and regular contact, establishing a relationship with study personnel, use of technology and social platforms, minimizing inconveniences, and promoting incentives. This review demonstrates that numerous factors can affect engagement of caregivers and their children in long-term cohort studies. Better understanding of these factors can inform researchers about optimal approaches to recruitment and retention of caregiver-child dyads in longitudinal research.

Pilot Study of the FitMoms2B Physical Activity Promotion Program Among Black Women With High-Risk Pregnancies

OBJECTIVE

To explore the feasibility of recruitment, adherence, and retention and the acceptability of the FitMoms2B physical activity promotion program and study measures among non-Hispanic Black women with high-risk pregnancies.

DESIGN

One-arm pilot feasibility study.

SETTING

A large regional high-risk prenatal clinic in the southeastern United States.

PARTICIPANTS

Non-Hispanic Black women who had singleton, high-risk pregnancies at 16 to 23 weeks gestation with no contraindications to physical activity (N = 13).

METHOD

We evaluated the feasibility and acceptability of a multicomponent intervention, which included physical activity coaching, support from a workout partner, and an activity tracker. We also assessed the feasibility of study measures for future trials of the program.

RESULTS

Of 179 patients screened, 20 were eligible, and 13 consented and enrolled (65%). Of the 13 participants, 9 completed data collection at Time Point (T) 1 (16-23 weeks gestation) and T2 (24-30 weeks), and 8 completed data collection at T3 (31 or more weeks). Adherence met expectations for coaching (63%), exercise with a workout partner (100%), and use of the activity tracker (92%). Acceptability was high (100%).

CONCLUSION

We found that recruitment, retention, and adherence are feasible for the FitMoms2B physical activity promotion program. The program and study measures were acceptable to participants in our sample. We provide preliminary support for a randomized controlled trial to study physical activity promotion with virtual coaching, workout partner support, and activity tracking among Black pregnant women with high-risk pregnancies without contraindications to physical activity.

Using the principles of practice development to address challenges in recruitment and data collection when face-to-face methods are unavailable

BACKGROUND

Researchers conducting studies involving pregnant women often find recruitment challenging. The COVID-19 pandemic added further complexity to studies requiring face-to-face participation.

AIM

To demonstrate how to maintain the principles of practice development (PD) when a study must switch from face-to-face to remote methods of collecting data.

DISCUSSION

The number of participants in the authors' study increased when they moved from face-to-face to telephone engagement during the COVID-19 pandemic. They continued using PD principles when they changed method and the quality of the data they collected remained constant, even once lockdown restrictions were in place.

CONCLUSION

PD principles can offer ways for nurse researchers to engage, collaborate with and reflect with people for research projects, including when constraints compete with participation. They can also assist researchers in optimising and maintaining recruitment and data collection when face-to-face research methods are impossible.

IMPLICATIONS FOR PRACTICE

The telephone can be a valuable alternative medium for recruiting participants and collecting data when face-to-face methods are impossible to use. PD principles can be maintained and response rates and participation may even be greater when using it.

The Association between Mode of Transportation Support and Research Study Visit Attendance among Pregnant Patients

OBJECTIVE

This study aimed to examine the association between transportation assistance and study visits, and explore differences by transportation modality.

STUDY DESIGN

This was a secondary analysis of prospective cohort study. We identified patients requesting transportation support for research ultrasound visits and identified controls (1:2 ratio) who did not request support matched for age, race, and insurance type. Conditional logistic regression examined the association between transportation support and mode of transportation with study visit attendance.

RESULTS

Transportation support was requested by 57/1,184 (4.8%) participants. Participants that requested transportation support were three times more likely to attend visits than their matched controls (adjusted odds ratio [aOR] = 3.16, 95% confidence interval [CI]: 1.76-5.68). Among visits with transportation support, those supported by a ridesharing service had five-fold higher odds of attendance than visits supported with taxi service (aOR = 5.06, 95% CI: 1.50-16.98).

CONCLUSION

Transportation support, especially a ridesharing service, is associated with improved attendance at research study visits in a sample of predominantly low-income, Black, pregnant participants. Implementing transportation support may be a promising strategy to improve engagement in research studies.

KEY POINTS

· Participants utilizing transportation assistance were more likely to attend study appointments.. · Participants using ridesharing had higher likelihood of attendance than those using taxi service.. · Transportation assistance may improve research engagement for historically marginalized people..

Transportation, childcare, lodging, and meals: Key for participant engagement and inclusion of historically underrepresented populations in the healthy brain and child development birth cohort

Introduction

Participant recruitment and retention (R&R) are well-documented challenges in longitudinal studies, especially those involving populations historically underrepresented in research and vulnerable groups (e.g., pregnant people or young children and their families), as is the focus of the HEALthy Brain and Child Development (HBCD) birth cohort study. Subpar access to transportation, overnight lodging, childcare, or meals can compromise R&R; yet, guidance on how to overcome these "logistical barriers" is sparse. This study's goal was to learn about the HBCD sites' plans and develop best practice recommendations for the HBCD consortium for addressing these logistical barriers.

Methods

The HBCD's workgroups developed a survey asking the HBCD sites about their plans for supporting research-related transportation, lodging, childcare, and meals, and about the presence of institutional policies to guide their approach. Descriptive statistics described the quantitative survey data. Qualitative survey responses were brief, not warranting formal qualitative analysis; their content was summarized.

Results

Twenty-eight respondents, representing unique recruitment locations across the U.S., completed the survey. The results indicated substantial heterogeneity across the respondents in their approach toward supporting research-related transportation, lodging, childcare, and meals. Three respondents were aware of institutional policies guiding research-related transportation (10.7%) or childcare (10.7%).

Conclusions

This study highlighted heterogeneity in approaches and scarcity of institutional policies regarding research-related transportation, lodging, childcare, and meals, underscoring the need for guidance in this area to ensure equitable support of participant R&R across different settings and populations, so that participants are representative of the larger community, and increase research result validity and generalizability.

Patient priorities for fulfilling the principle of respect in research: findings from a modified Delphi study

BACKGROUND

Standard interpretations of the ethical principle of respect for persons have not incorporated the views and values of patients, especially patients from groups underrepresented in research. This limits the ability of research ethics scholarship, guidance, and oversight to support inclusive, patient-centered research. This study aimed to identify the practical approaches that patients in community-based settings value most for conveying respect in genomics research.

METHODS

We conducted a 3-round, web-based survey using the modified Delphi technique to identify areas of agreement among English-speaking patients at primary care clinics in Washington State and Idaho who had a personal or family history of cancer. In Round 1, respondents rated the importance of 17 items, identified in prior qualitative work, for feeling respected. In Round 2, respondents re-rated each item after reviewing overall group ratings. In Round 3, respondents ranked a subset of the 8 most highly rated items. We calculated each item's mean and median rankings in Round 3 to identify which approaches were most important for feeling respected in research.

RESULTS

Forty-one patients consented to the survey, 21 (51%) completed Round 1, and 18 (86% of Round 1) completed each of Rounds 2 and 3. Two sets of rankings were excluded from analysis as speed of response suggested they had not completed the Round 3 ranking task. Respondents prioritized provision of study information to support decision-making (mean ranking 2.6 out of 8; median ranking 1.5) and interactions with research staff characterized by kindness, patience, and a lack of judgment (mean ranking 2.8; median ranking 2) as the most important approaches for conveying respect.

CONCLUSIONS

Informed consent and interpersonal interactions are key ways that research participants experience respect. These can be supported by other approaches to respecting participants, especially when consent and/or direct interactions are infeasible. Future work should continue to engage with patients in community-based settings to identify best practices for research without consent and examine unique perspectives across clinical and demographic groups in different types of research.

Challenges and Opportunities for Data Science in Women's Health

The intersection of women's health and data science is a field of research that has historically trailed other fields, but more recently it has gained momentum. This growth is being driven not only by new investigators who are moving into this area but also by the significant opportunities that have emerged in new methodologies, resources, and technologies in data science. Here, we describe some of the resources and methods being used by women's health researchers today to meet challenges in biomedical data science. We also describe the opportunities and limitations of applying these approaches to advance women's health outcomes and the future of the field, with emphasis on repurposing existing methodologies for women's health.

Electronic Monitoring Of Mom's Schedule (eMOMSTM): Recruitment of pregnant populations with elevated BMI in a feasibility randomized controlled trial

Underrepresentation of pregnant populations in randomized controlled trials of lifestyle change interventions is concerning due to high attrition and providers' limited clinical time. The purpose of this evaluative study was to assess intervention uptake of pregnant individuals enrolled in a three-arm feasibility randomized controlled trial, electronic Monitoring Of Mom's Schedule (eMOMS^TM), examining lifestyle changes and lactation support alone, and in combination. Measures included: (1) participation and completion rates, and characteristics of intervention completers versus other eligible participants; and (2) provider experiences with screening and enrolling pregnant participants. Pregnant people with a pre-pregnancy body mass index ≥ 25 and < 35 kg/m² were enrolled into the eMOMS^TM trial between September 2019 - December 2020. Of the 44 consented participants, 35 were randomized, at a participation rate of 35%, and 26 completed the intervention, resulting in a completion rate of 74%. Intervention completers were slightly older and entered the study earlier in pregnancy compared to non-completers. Completers were more likely to be first-time mothers, resided in urban areas, had higher educational attainment, and were slightly more racially and ethnically diverse. A majority of providers reported willingness to participate, believed the study aligned with their organization's mission, and were satisfied with using iPads for screening. Lessons learned to guide recruitment success include use of: (1) designated research staff in combination with physician support; and (2) user-friendly technology to help mitigate time burden on physicians and their staff. Future work should focus on successful strategies to recruit/retain pregnant populations in clinical trials.

Non-specialist-delivered psychosocial intervention for prenatal anxiety in a tertiary care setting in Pakistan: a qualitative process evaluation

OBJECTIVES

A manualised cognitive-behavioural therapy-based psychosocial intervention for prenatal anxiety called Happy Mother Healthy Baby is being tested for its effectiveness through a randomised control trial in Pakistan. The aim of this study was to evaluate the intervention delivery process and the research process.

DESIGN

Qualitative methods were used to explore in depth the intervention delivery and research process.

SETTING

This process evaluation was embedded within a randomised control trial conducted in a tertiary care facility in Rawalpindi, Pakistan.

PARTICIPANTS

Data were collected through in-depth interviews (n=35) with the trial participants and focus group discussions (n=3) with the research staff. Transcripts were analysed using a Framework Analysis.

RESULTS

The evaluation of the intervention delivery process indicated that it can be effectively delivered by non-specialist providers trained and supervised by a specialist. The intervention was perceived to be culturally acceptable and appropriately addressing problems related to prenatal anxiety. Lack of awareness of 'talking' therapies and poor family support were potential barriers to participant engagement. The evaluation of the research process highlighted that culturally appropriate consent procedures facilitated recruitment of participants, while incentivisation and family involvement facilitated sustained engagement and retention. Lack of women's empowerment and mental health stigma were potential barriers to implementation of the programme.

CONCLUSION

We conclude that non-specialists can feasibly deliver an evidence-based intervention integrated into routine antenatal care in a tertiary hospital. Non-specialist providers are likely to be more cost effective and less stigmatising. Inclusion of family is key for participant recruitment, retention and engagement with the intervention.

TRIAL REGISTRATION NUMBER

NCT03880032.

Voices of Women With Lived Experience of Substance Use During Pregnancy: A Qualitative Study of Motivators and Barriers to Recruitment and Retention in Research

Despite concerns about negative neurocognitive effects of in utero substance exposure on child and brain development, research in this area is limited. This study gathered perspectives of persons with lived experience of substance use (eg, alcohol, prescription and illicit opioids, and other illicit substances) during a previous pregnancy to determine facilitators and barriers to research engagement in this vulnerable population. We conducted structured, in-depth, individual interviews and 2 focus groups of adult persons with lived experience of substance use during a previous pregnancy. Questions were developed by clinical, research, bioethics, and legal experts, with input from diverse stakeholders. They inquired about facilitators and barriers to research recruitment and retention, especially in long-term studies, with attention to bio-sample and neuroimaging data collection and legal issues. Interviews and focus groups were audio-recorded, transcribed, and analyzed using inductive coding qualitative analysis methods. Ten participants completed in-depth interviews and 7 participated in focus groups. Three main themes emerged as potential barriers to research engagement: shame of using drugs while pregnant, fear of punitive action, and mistrust of health care and research professionals. Facilitative factors included trustworthiness, compassion, and a nonjudgmental attitude among research personnel. Inclusion of gender-concordant recovery peer support specialists as research team members was the most frequently identified facilitator important for helping participants reduce fears and bolster trust in research personnel. In this qualitative study, persons with lived experience of substance use during a previous pregnancy identified factors critical for engaging this population in research, emphasizing the involvement of peer support specialists as research team members.

Barriers to and solutions for representative inclusion across the lifespan and in life course research: The need for structural competency highlighted by the COVID-19 pandemic

Exclusion of special populations (older adults; pregnant women, children, and adolescents; individuals of lower socioeconomic status and/or who live in rural communities; people from racial and ethnic minority groups; individuals from sexual or gender minority groups; and individuals with disabilities) in research is a pervasive problem, despite efforts and policy changes by the National Institutes of Health and other organizations. These populations are adversely impacted by social determinants of health (SDOH) that reduce access and ability to participate in biomedical research. In March 2020, the Northwestern University Clinical and Translational Sciences Institute hosted the "Lifespan and Life Course Research: integrating strategies" "Un-Meeting" to discuss barriers and solutions to underrepresentation of special populations in biomedical research. The COVID-19 pandemic highlighted how exclusion of representative populations in research can increase health inequities. We applied findings of this meeting to perform a literature review of barriers and solutions to recruitment and retention of representative populations in research and to discuss how findings are important to research conducted during the ongoing COVID-19 pandemic. We highlight the role of SDOH, review barriers and solutions to underrepresentation, and discuss the importance of a structural competency framework to improve research participation and retention among special populations.

Disparities in Vitamin D Status of Newborn Infants from a Diverse Sociodemographic Population in Montreal, Canada

BACKGROUND

Vitamin D status at birth is reliant on maternal-fetal transfer of vitamin D during gestation.

OBJECTIVES

We aimed to examine the vitamin D status of newborn infants in a diverse population and to subsequently identify the modifiable correlates of vitamin D status.

METHODS

In this cross-sectional study, healthy mother-infant dyads (n = 1035) were recruited within 36 h after term delivery (March 2016-March 2019). Demographic and lifestyle factors were surveyed. Newborn serum 25-hydroxyvitamin D [25(OH)D] was measured (standardized chemiluminescence immunoassay) and categorized as deficient [serum 25(OH)D <30 nmol/L] or adequate (≥40 nmol/L). Serum 25(OH)D was compared among categories of maternal characteristics using ANOVA; each characteristic was tested in a separate model. Subgroups (use of multivitamins preconception and continued in pregnancy compared with during pregnancy only) were matched (n = 352/group) for maternal factors (ancestry, age, income, education, parity, and prepregnancy BMI) using propensity scores; logistic regression models were generated for odds of deficiency or adequacy.

RESULTS

Infants' mean serum 25(OH)D was 45.9 nmol/L (95% CI: 44.7, 47.0 nmol/L) (n = 1035), with 20.8% (95% CI: 18.3%, 23.2%) deficient and 60.7% (95% CI: 55.2%, 66.2%) adequate. Deficiency prevalence ranged from 14.6% of white infants to 41.7% of black infants. Serum 25(OH)D was higher (P < 0.0001) in infants of mothers with higher income, BMI < 25 kg/m2, exercise and sun exposure in pregnancy, and use of multivitamins preconception. In the matched-subgroup analysis, multivitamin supplementation preconception plus during pregnancy relative to only during pregnancy was associated with lower odds for vitamin D deficiency (ORadj: 0.55; 95% CI: 0.36, 0.86) and higher odds for adequate vitamin D status (ORadj: 1.47; 95% CI: 1.04, 2.07).

CONCLUSIONS

In this study most newborn infants had adequate vitamin D status, yet one-fifth were vitamin D deficient with disparities between population groups. Guidelines for a healthy pregnancy recommend maternal use of multivitamins preconception and continuing in pregnancy. An emphasis on preconception use may help to achieve adequate neonatal vitamin D status.This trial was registered at clinicaltrials.gov as NCT02563015.