Can respondent driven sampling be used to recruit new mothers? A mixed methods study in metropolitan Washington DC

Background

Respondent driven sampling (RDS) is employed to recruit populations that are hard-to-reach, “hidden,” or without a sampling frame. For new mothers (those with infants <6 months) in countries without national health care systems or registries, there is no sampling frame, and random samples may only be attained through costly strategies, e.g., random-dial calling.

Objective

To assess the feasibility of RDS to recruit new mothers.

Methods

In the initial study, we recruited 30 new mothers (“seeds”) from a single birth hospital; each was given 3 referral coupons to give to other mothers (“referrals”). When our sample did not self-perpetuate with referrals, additional seeds were recruited. Demographics of seeds and referrals were compared. A subset of mothers participated in focus groups and were asked about their experience with RDS. We also conducted a second survey of new mothers to further assess feasibility of RDS in this population.

Results

Of the 402 mothers recruited in the initial study, 305 were seeds and only 97 were referrals. Referrals were more likely to be White, highly educated, older, and privately insured (all p≤0.001). Focus group participants indicated that the time required to meet other mothers was an important barrier. In the second survey we recruited 201 mothers; only 53.7% knew ≥1 mother whom they could invite to the study.

Conclusions

New mothers are not easily recruited using RDS because they have a limited number of contacts who are also new mothers. Those recruited through RDS are more likely to be older, Caucasian and of high socioeconomic status, indicating it is not an effective way to recruit a representative sample of new mothers.

Implications of Mothers' Social Networks for Risky Infant Sleep Practices

OBJECTIVE

To describe the structure of networks in a cohort of mothers and to analyze associations of social network characteristics and norms with infant sleep practices.

STUDY DESIGN

We recruited a prospective cohort of mothers with infants <6 months of age from January 2015 to December 2016. Mothers completed a survey about their personal social networks and infant care practices. Latent class analysis identified unobserved network types. Binary statistics and path analysis were performed.

RESULTS

Overall, 402 mothers were surveyed. Latent class analysis identified 2 a priori unknown social network types: "exclusive" (restricted) and "expansive." Mothers who were black, younger, unmarried, less educated, and of lower socioeconomic status were more likely to have exclusive networks than expansive networks. Mothers with exclusive networks were more likely to be exposed to the norm of soft bedding (P = .002). Exposure to norms of non-supine infant placement, bedsharing, and soft bedding use within one's network was associated with engaging in these practices (P < .0001 for each). First-time mothers were more likely to pay attention to a non-supine norm and place infants in a non-supine position. Black mothers and first-time mothers were more likely to pay attention to the norm and use soft bedding.

CONCLUSIONS

Both the type of networks mothers have and the norms regarding infant sleep practices that circulate within these networks differed by race. Network norms were strongly associated with infant sleep practices and may partially explain the racial disparity therein.

Health Messaging and African-American Infant Sleep Location: A Randomized Controlled Trial

Infant-parent bedsharing increases the risk of SIDS and other sleep-related deaths. Despite AAP recommendations to avoid bedsharing, public health efforts have been unsuccessful in changing behaviors. African-American infants are more than twice as likely to die from SIDS and other sleep-related deaths, and are also twice as likely to bedshare with their parents. Further, African-American parents have a high degree of self-efficacy with regards to preventing infant suffocation, but low self-efficacy with regards to SIDS risk reduction. It is unclear whether messages emphasizing suffocation prevention will decrease bedsharing. To evaluate the impact of specific health messages on African-American parental decisions regarding infant sleep location. We conducted a randomized, controlled trial of African-American mothers of infants. The control group received standard messaging emphasizing AAP-recommended safe sleep practices, including avoidance of bedsharing, for the purposes of SIDS risk reduction. The intervention group received enhanced messaging emphasizing safe sleep practices, including avoidance of bedsharing, for both SIDS risk reduction and suffocation prevention. Participants completed interviews at 2-3 weeks, 2-3 months, and 5-6 months after the infant's birth. 1194 mothers were enrolled in the study, and 637 completed all interviews. Bedsharing, both usually (aOR 1.005 [95 % CI 1.003, 1.006]) and last night (aOR 1.004 [95 % CI 1.002, 1.007]) increased slightly but statistically significantly with infant age (p < 0.001). Receipt of the enhanced message did not impact on sleep location. Maternal belief that bedsharing increased the risk of SIDS or suffocation declined over 6 months (p < 0.001) and did not differ by group assignment. African-American mothers who received an enhanced message about SIDS risk reduction and suffocation prevention were no less likely to bedshare with their infants.

CLINICAL TRIALS REGISTRATION

Clinical Trials.gov identifier NCT01361880.

Impact of a Randomized Controlled Trial to Reduce Bedsharing on Breastfeeding Rates and Duration for African-American Infants

Bedsharing is associated with both increased breastfeeding and increased risk of sudden and unexpected infant deaths. The objective was to determine impact of sleep location and counseling about sleep location on breastfeeding exclusivity and duration in African-Americans. 1194 mothers of newborns were randomized to receive messaging emphasizing either safe sleep practices to reduce SIDS risk or safe sleep practices to prevent SIDS/suffocation. Mothers completed four interviews in the 6 months after delivery. The most common sleep arrangement was roomsharing without bedsharing ("roomsharing"). Duration of any breastfeeding was 6.1 and 5.3 weeks for infants who usually bedshared or roomshared, respectively (p = 0.01). Duration of exclusive breastfeeding was 3.0 and 1.6 weeks for infants who usually bedshared or roomshared, respectively (p < 0.001). Group assignment did not affect breastfeeding duration. The most common sleep arrangement for African-American infants <6 months was roomsharing. An intervention designed to discourage bedsharing did not impact breastfeeding duration.

Messaging Affects the Behavior of African American Parents with Regards to Soft Bedding in the Infant Sleep Environment: A Randomized Controlled Trial

OBJECTIVE

To evaluate the impact of specific health messages on the decisions of African American parents regarding soft bedding use, specifically related to the high degree of self-efficacy that African American parents have with regards to preventing infant suffocation vs low self-efficacy with regards to sudden infant death syndrome (SIDS) risk reduction.

STUDY DESIGN

We conducted a randomized, controlled clinical trial of African American mothers of infants. The control group received standard messaging emphasizing safe sleep practices recommended by the American Academy of Pediatrics for the purposes of SIDS risk reduction. The intervention group received enhanced messaging emphasizing safe sleep practices for both SIDS risk reduction and suffocation prevention. Participants completed interviews at 2-3 weeks, 2-3 months, and 5-6 months after the infant's birth.

RESULTS

Of 1194 mothers enrolled, 637 completed all interviews. The use of soft bedding both in the past week and last night declined with age (P < .001). Infants in the enhanced group had a lower rate of use of soft bedding in the past week (P = .006) and last night (P = .013). Mothers who received the enhanced message were more likely to state that they avoided soft bedding to protect their infant from suffocation.

CONCLUSIONS

African American mothers who receive an enhanced message about SIDS risk reduction and suffocation prevention are less likely to use soft bedding in their infant's sleep environment.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT01361880.

Reasons for Pacifier Use and Non-Use in African-Americans: Does Knowledge of Reduced SIDS Risk Change Parents' Minds?

To investigate African-American parental reasons for pacifier use or non-use, and whether knowledge of the association with decreased SIDS risk changes decisions about pacifier use. We conducted focus groups and individual interviews with mothers. Grounded theory methodology was used. 83 mothers participated; 72.3 % of infants used pacifiers. Reasons for pacifier use included comfort/soothing, safety/SIDS, and preference over digit-sucking. Reasons for pacifier non-use included infant refusal, fear of attachment, nipple confusion, and germs. Many parents were unaware that pacifier use reduces SIDS risk; however, most parents of non-users did not think that this knowledge would have changed their decision. Reasons included skepticism about the pacifier-SIDS link. Many reasons underlie African-American parental decisions about pacifier use. Providers should provide information about the benefits of pacifiers. Establishing for parents any plausible link between the protective mechanism of pacifiers and SIDS pathophysiology may be important in promoting pacifier use.

Safe infant sleep recommendations on the Internet: let's Google it

OBJECTIVES

To determine the accuracy of information on infant sleep safety on the Internet using Google. We hypothesized that the majority of Web sites would accurately reflect the American Academy of Pediatrics (AAP) recommendations for infant sleep safety.

STUDY DESIGN

We searched for advice using 13 key phrases and analyzed the first 100 Web sites for each phrase. Web sites were categorized by type and assessed for accuracy of information provided, based on AAP recommendations. The accuracy of information was classified as "accurate," "inaccurate," or "not relevant."

RESULTS

Overall, 43.5% of the 1300 Web sites provided accurate information, 28.1% provided inaccurate information, and 28.4% were not relevant. The search terms "infant cigarette smoking," "infant sleep position," and "infant sleep surface" yielded the highest percentage of Web sites with accurate information. "Pacifier infant," "infant home monitors," and "infant co-sleeping" produced the lowest percentage of Web sites with accurate information. Government Web sites had the highest rate of accuracy; blogs, the lowest.

CONCLUSION

The Internet contains much information about infant sleep safety that is inconsistent with AAP recommendations. Health care providers should realize the extent to which parents may turn to the Internet for information about infant sleep safety.

Swaddling: will it get babies onto their backs for sleep?

INTRODUCTION

The supine sleep position is recommended to reduce sudden infant death syndrome risk. Swaddling may improve adherence with supine placement.

AIM

To assess knowledge, attitudes, and practice regarding swaddling among adult caregivers of 0- to 3-month-old infants.

METHODS

Cross-sectional descriptive survey.

RESULTS

All 103 adults interviewed had swaddled their infant. Common reasons for swaddling included infant comfort and warmth. Almost 80% of those who swaddled their infant found it effective, 80% believed it to be comfortable, and ~90% believed swaddling to be safe. Parents who routinely used swaddling were more likely to find it effective and to place their infant supine when swaddled (P < .01).

CONCLUSIONS

Parents often use swaddling to comfort the infant, and most find it effective. Parents who routinely use swaddling are more likely to place their infant supine if swaddled. Swaddling may be a strategy for parents of infants who have difficulty sleeping in the supine position.

Decisions of black parents about infant bedding and sleep surfaces: a qualitative study

OBJECTIVE

The goal of this qualitative study was to examine factors influencing decisions by black parents regarding use of soft bedding and sleep surfaces for their infants.

METHODS

We conducted focus groups and individual interviews with black mothers of lower and higher socioeconomic status (SES). Mothers were asked about many infant care practices, including sleep surface and bedding.

RESULTS

Eighty-three mothers were interviewed, 73 (47 lower and 26 higher SES) in focus groups and 10 (7 lower and 3 higher SES) in individual interviews. The primary reason for using soft surfaces was infant comfort. Parents perceived that infants were uncomfortable if the surface was not soft. Many parents also interpreted "firm sleep surface" to mean taut; they were comfortable with and believed that they were following recommendations for a firm sleep surface when they placed pillows/blankets on the mattress as long as a sheet was pulled tautly over the pillows/blankets. The primary reasons for using soft bedding (including bumper pads) were comfort, safety, and aesthetics. In addition to using bedding to soften sleep surfaces, bedding was used to prevent infant rollover and falls, particularly for infants sleeping on a bed or sofa. Some parents used soft bedding to create an attractive space for the infant.

CONCLUSIONS

Many black parents believe that soft bedding will keep their infant safe and comfortable. There is much misunderstanding about the meaning of a "firm" sleep surface. Additional educational messages apparently are needed to change parental perceptions and practices.

Where should my baby sleep: a qualitative study of African American infant sleep location decisions

BACKGROUND

African American infants are of higher risk for sudden infant death syndrome (SIDS) and accidental suffocation than other infants and are up to 4 times more likely to bedshare with their parents.

OBJECTIVE

To investigate, using qualitative methods, factors influencing African American parents' decisions regarding infant sleep location (room location and sleep surface).

METHODS

Eighty-three mothers participated in focus groups or individual interviews. Questions probed reasons for infant sleep location decisions and influences on decision making.

RESULTS

Most of the mothers in this study slept in the same room as their infant. Reasons for roomsharing included space, convenience, and safety. Mothers largely decided on infant sleep surface because of space for/availability of crib, comfort, convenience, and safety. Both roomsharing and bedsharing were often chosen to make feeding and checking on the infant more convenient. Mothers who chose not to bedshare cited privacy, concern that the infant would become attached to the parents' bed, and fears about suffocation. Mothers who chose to bedshare often cited the ability to maintain vigilance while asleep. Low-income mothers also used bedsharing as a defense against environmental dangers.

CONCLUSION

African American mothers in this study viewed both roomsharing and bedsharing as strategies to keep their infants safe. Efforts to encourage roomsharing without bed-sharing must address parental concerns about space for/ availability of a crib, convenience, infant and parent comfort, and infant safety.

Qualitative analysis of beliefs and perceptions about sudden infant death syndrome in African-American mothers: implications for safe sleep recommendations

OBJECTIVE

To investigate, by using qualitative methods, perceptions about sudden infant death syndrome (SIDS) in African-American parents and how these influence decisions.

STUDY DESIGN

Eighty-three mothers participated in focus groups or individual interviews. Interviews probed reasons for decisions about infant sleep environment and influences affecting these decisions. Data were coded, and themes were developed and revised in an iterative manner as patterns became more apparent.

RESULTS

Themes included lack of plausibility, randomness, and vigilance. Many mothers believed that the link between SIDS and sleep position was implausible. Because the cause of SIDS was unknown, they did not understand how certain behaviors could be defined as risk factors. This confusion was reinforced by perceived inconsistency in the recommendations. Most mothers believed that SIDS occurred randomly ("God's will") and that the only way to prevent it was vigilance.

CONCLUSIONS

Many African-American mothers may not understand the connection between SIDS and sleep behaviors or believe that behavior (other than vigilance) cannot affect risk. These beliefs, if acted on, may affect rates of safe sleep practices. Efforts to explain a plausible link between SIDS and safe sleep recommendations and to improve consistency of the message may result in increased adherence to these recommendations.

Back to Sleep: an educational intervention with women, infants, and children program clients

OBJECTIVE

The incidence of sudden infant death syndrome (SIDS) is 2 to 3 times higher in the black population compared with the US population as a whole. Prone sleeping is also twice as prevalent in black infants. Standard modes of communication (media, brochures) regarding the Back to Sleep (BTS) campaign have been less effective with blacks. The objective of this study was to determine whether a 15-minute educational intervention is effective in changing sleep position practice among black parents.

METHODS

A trained health educator led 15-minute sessions about safe infant sleep practices for groups of 3 to 10 parents of young infants who attended a Women, Infants, and Children clinic in Washington, DC. We performed pre- and postsession surveys, asking about sleep position, reasons for choosing a sleep position, and knowledge of the relationship between sleep position and SIDS. We then interviewed parents 6 months after the intervention and compared this group with a group of parents at a different Women, Infants, and Children site who did not receive the intervention.

RESULTS

A total of 310 parents/caregivers participated in sessions from October 2001 to July 2002. Mothers comprised 84.5% of the participants, fathers 6.5%, and other relatives 9.0%. Parents had a mean age of 26.2 years (range: 15-64; standard deviation: 8.3), and 76.5% had graduated from high school. For 51%, this was their first child. Before the intervention, more than half (57.7%) of infants reportedly slept on their back, with the remainder sleeping back/side or side (15%) and prone (17.3%). Approximately 85% (266) of infants were sleeping in the same room as the parents. Only 28.1% of parents initially believed that prone sleeping definitely increases the risk of SIDS. Infants were more likely to be placed supine when previous children were placed supine or when parents had more than a high school education. Parents were also more likely to place infants supine when they believed that prone increases the risk of SIDS, they had previous knowledge of BTS, and they were aware that the American Academy of Pediatrics recommends supine position for infants. Sleep position was not affected by where the infant slept, number of parents in the home, presence of a grandmother in the home, or presence of smokers in the home. Immediately after the intervention, 85.3% planned to place infants on the back, and 55.7% now believed that prone definitely increases the risk of SIDS. When compared with a control group of parents 6 months after the intervention, parents who attended the educational intervention were more likely to place their infants on the back (75% vs 45%), less likely to bedshare (16% vs 44.2%), less likely to cite infant comfort as a reason for sleep position (14.5% vs 29.2%), and more likely to be aware of BTS recommendations (72.4% vs 38.9%).

CONCLUSIONS

A 15-minute educational session with small groups of black parents is effective in informing parents about the importance of safe sleep position and in changing parent behavior. The effect of the intervention is sustained throughout the first 6 months of life, when the infant is at the highest risk for SIDS.

Back to sleep: can we influence child care providers?

OBJECTIVE

Despite the fact that 20% of sudden infant death syndrome (SIDS) deaths occur in child care settings, many child care providers continue to be unaware of the association of SIDS and infant sleep position and/or are misinformed as to the risks and benefits of the various sleep positions. The objective of this study was to determine whether an educational program for child care providers regarding SIDS and safe sleep environment is effective in 1) providing basic information and understanding regarding SIDS risk reduction practices, 2) changing child care provider behavior, and 3) promoting development of written sleep position policies.

METHODS

We designed a 60-minute educational in-service for child care providers, to be led by a trained health educator. All providers who attended the in-service were asked to complete surveys before and after the in-service. Surveys assessed provider knowledge, beliefs, and practices. A 6-month follow-up interview was conducted with child care centers that had providers participating in the in-service.

RESULTS

A total of 96 child care providers attended the educational in-service. Providers who were using the supine position exclusively increased from 44.8% to 78.1%. This change in behavior was sustained, with 85% of centers placing infants exclusively supine 6 months after the intervention. Awareness of the American Academy of Pediatrics recommendation of supine as the preferred position for infants increased from 47.9% to 78.1%, and 67.7% of centers continued to recognize supine as the recommended position 6 months later. The percentage of centers that reported written sleep position policies increased from 18.8% to 44.4%.

CONCLUSIONS

A targeted educational in-service for child care providers is effective in increasing awareness and knowledge, changing child care provider behavior, and promoting development of written sleep position policies. This change is sustained over at least a 6-month period.