Unsafe sleep practices and an analysis of bedsharing among infants dying suddenly and unexpectedly: results of a four-year, population-based, death-scene investigation study of sudden infant death syndrome and related deaths

Evidence Base for 2022 Updated Recommendations for a Safe Infant Sleeping Environment to Reduce the Risk of Sleep-Related Infant Deaths

Every year in the United States, approximately 3500 infants die of sleep-related infant deaths, including sudden infant death syndrome (SIDS) (International Statistical Classification of Diseases and Related Health Problems 10th Revision [ICD-10] R95), ill-defined deaths (ICD-10 R99), and accidental suffocation and strangulation in bed (ICD-10 W75). After a substantial decline in sleep-related deaths in the 1990s, the overall death rate attributable to sleep-related infant deaths have remained stagnant since 2000, and disparities persist. The triple risk model proposes that SIDS occurs when an infant with intrinsic vulnerability (often manifested by impaired arousal, cardiorespiratory, and/or autonomic responses) undergoes an exogenous trigger event (eg, exposure to an unsafe sleeping environment) during a critical developmental period. The American Academy of Pediatrics recommends a safe sleep environment to reduce the risk of all sleep-related deaths. This includes supine positioning; use of a firm, noninclined sleep surface; room sharing without bed sharing; and avoidance of soft bedding and overheating. Additional recommendations for SIDS risk reduction include human milk feeding; avoidance of exposure to nicotine, alcohol, marijuana, opioids, and illicit drugs; routine immunization; and use of a pacifier. New recommendations are presented regarding noninclined sleep surfaces, short-term emergency sleep locations, use of cardboard boxes as a sleep location, bed sharing, substance use, home cardiorespiratory monitors, and tummy time. In addition, additional information to assist parents, physicians, and nonphysician clinicians in assessing the risk of specific bed-sharing situations is included. The recommendations and strength of evidence for each recommendation are published in the accompanying policy statement, which is included in this issue.

Missed Opportunities: Healthcare Encounters Prior to Sudden Unexpected Infant Death

Introduction

Sudden unexpected infant death (SUID) is the leading cause of death in children 28 days to 1 year of age. The study aim was to identify opportunities for healthcare professionals to provide families with education on sleep and prevention of SUID.

Methods

We performed a retrospective chart review of SUID infants over 10 years (12/2010-12/2020). The study included patients 0-12 months who presented to single institution with SUID (including asphyxia, suffocation, and SIDS). Baseline descriptive characteristics, sleep patterns (location, position, co-sleeping, presence of pillows/blankets), and prior healthcare encounters (type, duration, frequency, timing) were described.

Results

Thirty-five infants met inclusion criteria. Twenty-three percent of families routinely practiced unsafe sleep, while 63% practiced unsafe sleep at the time of SUID. All unsafe sleep behaviors increased during the SUID event compared to routine, including inappropriate location (60%), co-sleeping (46%), and inappropriate position (37%) at the time of SUID. There were 54 total healthcare encounters (mean 1.5 per patient +/- 2.1) prior to SUID. Primary care physicians (57%) and NICU (29%) were the most frequent prior healthcare encounters, however visits spanned multiple specialties. Twenty-six percent had a healthcare encounter within 7 days of their death.

Discussion

We demonstrated the frequency and variability in healthcare encounters among SUID infants prior to their death. Majority of infants had prior healthcare encounters, with 26% seen by healthcare professionals within 7 days of their death. These results highlight the important role healthcare professionals across all specialties have the potential to play in educating families about safe sleep and SUID.

Prematurity, the diagnosis of bronchopulmonary dysplasia, and maturation of ventilatory control

Infants born before 32 weeks gestational age and receiving respiratory support at 36 weeks postmenstrual age (PMA) are diagnosed with bronchopulmonary dysplasia (BPD). This label suggests that their need for supplemental oxygen (O₂ ) is primarily due to acquired dysplasia of airways and airspaces, and that the supplemental O₂ is treating residual parenchymal lung disease. However, emerging evidence suggests that immature ventilatory control may also contribute to the need for supplemental O₂ at 36 weeks PMA. In all newborns, maturation of ventilatory control continues ex utero and is a plastic process. Among premature infants, supplemental O₂ mitigates the hypoxemic effects of delayed maturation of ventilatory control, as well as reduces the duration and frequency of periodic breathing events. Nevertheless, prematurity is associated with altered and occasionally aberrant maturation of ventilatory control. Infants born prematurely, with or without a diagnosis of BPD, are more prone to long-lasting effects of dysfunctional ventilatory control. This review addresses normal and abnormal maturation of ventilatory control and suggests how aberrant maturation complicates assigning the diagnosis of BPD. Greater awareness of the interaction between parenchymal lung disease and delayed maturation of ventilatory control is essential to understanding why a given premature infant requires and is benefitting from supplemental O₂ at 36 weeks PMA.

A firm recommendation: measuring the softness of infant sleep surfaces

Background

Approximately 3600 sudden unexpected infant deaths (SUID) occur annually in the United States, and a quarter of SUIDs are caused by unintentional suffocation and strangulation in bed, with soft bedding use being a significant risk factor. Therefore, The American Academy of Pediatrics (AAP) recommends infants sleep on a “firm” surface, though neither an objective definition nor national standard has been established. The purpose of this study is to report on the performance of a device that measures mattress softness and to provide quantitative values of softness for various infant sleep surfaces.

Methods

In collaboration with the authors and a national child product safety organization (Kids in Danger), University of Michigan engineering students designed and validated a device that measures the vertical depression (softness) of a simulated 2-month-old’s head on a sleep surface. A total of 17 infant sleep surfaces − 14 household surfaces and 3 hospital mattresses - were measured between April 2019 and January 2020. The average softness of each surface was calculated. Surfaces were also measured with soft bedding, which included an infant fleece blanket, and firm and soft pillows.

Results

The average softness for the 14 household sleep surfaces ranged from 7.4–36.9 mm. The 2019 cribette playard and the 2018 infant spring had similar softness (21 mm) as the 2018 and 2019 adult foam and 2015 sofa. An infant’s fleece blanket folded once added an additional 2.3–6.5 mm of softness, folded twice added 4.8–11.6 mm, and folded three times added 11–21.8 mm. Using a firm pillow added 4.0–20.9 mm of softness while using a soft pillow added 24.5–46.4 mm. The softness for the 3 hospital sleep surfaces ranged from 14 to 36.9 mm, with the infant bassinet being the firmest and the pediatrics mattress being the softest.

Conclusions

We found a wide range of softness among sleep surfaces, with some infant mattresses as soft as some adult mattresses. Adding blankets and pillows to mattresses measurably increased softness. Quantifying sleep surface softness will advance our understanding of how softness relates to SUID risk. We hope this new information will further inform safe infant sleep recommendations and improve mattress safety standards nationally.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40621-021-00325-x.

Are Safe Sleep Practice Recommendations For Infants Being Applied Among Caregivers?

Background

Sudden infant death syndrome (SIDS) is defined as the sudden unexpected death of an infant, even after investigations and autopsy. SIDS is related to many factors, such as the baby’s position and objects in the crib. Adherence to safe sleep recommendations in Saudi Arabia is unclear. This study aims to assess caregivers’ implementation of safe sleep practices and if they received any safe sleep education through health care workers.

Methods

This was a cross-sectional, descriptive study. Inclusion criteria included all infants below the age of one year. Exclusion criteria included infants who were born premature, used ventilation, had a tracheostomy, any anomaly in the upper airway, or underwent spine surgery. A semi-structured questionnaire was used. Data were collected from mothers who had infants visiting the outpatient department of King Abdulaziz University Hospital in Jeddah, Saudi Arabia. An electronic survey was also created and published on a social platform. 

Statistical analysis was conducted with the aid of the Statistical Package for Social Sciences (SPSS) software, version 26 (IBM SPSS Statistics, Armonk, NY).

Results

Among 506 participants, only 22.5% were found to receive education about safe practices from health care providers. Fortunately, most of the infants (63.2%) were found to sleep in a supine position most of the nights. Adherent caregivers to placing the child in a designated baby bed and in a supine position most nights represented 44.86% of the sample. However, when asked about placing any of the following objects in the bed (pillows, blankets, soft toys, hard toys, and electric wires), the percentage of adherence dropped down to only 1.58%.

Conclusion

There was an obvious non-adherence among caregivers and a possible lack of knowledge of safe sleep recommendations for infants. This highlights the need for optimal education by health care workers and the rule of media and campaigns is obvious and essential to improving their practices and, hopefully, decreasing the risk of SIDS.

Global trends in the extent of death scene investigation performed for sudden and unexpected death of infant (SUDI) cases: A systematic review

Sudden unexpected death of infants (SUDI) is the rapid and unexpected death of an infant aged less than 1year old. These deaths are referred for a medico-legal investigation to establish cause of death. National and regional protocols for the investigation of SUDI cases have been established in some countries and these typically include a death scene investigation component. However, there is a paucity of literature detailing the nature and extent of death scene investigation protocols. A systematic review was conducted to review the scope of death scene investigation of SUDI cases worldwide. Relevant articles (n=74) were identified by searching four literature databases, three discipline-specific journals, as well as each article's reference list, until saturation was reached. Of the 16 countries represented by the included articles, seven made specific reference to the standardised protocol used, which included photography, interviews and/or scene re-enactments. The remaining 54 studies appeared to include a subset of these analyses during death scene investigation, which varied between countries, and between SUDI admissions. This may be attributed to the differing socio-economic standings of countries, and the resources available. Only four studies were from developing countries, three of which originated from South Africa. Overall, where a standardised death scene investigation was performed, it added value to the post-mortem investigation; as such, death scene investigation should be encouraged in SUDI investigation. To this end, protocols should be established nationally, and contain core analyses, which could be expanded depending on the needs and resources of the country.

Sleep-Related Infant Suffocation Deaths Attributable to Soft Bedding, Overlay, and Wedging

BACKGROUND

Unintentional suffocation is the leading cause of injury death among infants <1 year old in the United States, with 82% being attributable to accidental suffocation and strangulation in bed. Understanding the circumstances surrounding these deaths may inform prevention strategies.

METHODS

We analyzed data from the population-based Sudden Unexpected Infant Death Case Registry from 2011 to 2014. Cases categorized as explained suffocation with unsafe sleep factors (suffocation), per the Centers for Disease Control and Prevention's Sudden Unexpected Infant Death Case Registry classification system, were included and assigned a mechanism of obstruction, including soft bedding, overlay, or wedging. We calculated frequencies and percentages of suffocation deaths by mechanism and selected demographic and sleep-environment characteristics.

RESULTS

Fourteen percent of sudden unexpected infant death cases were classified as suffocation; these cases were most frequently attributed to soft bedding (69%), followed by overlay (19%) and wedging (12%). Median age at death in months varied by mechanism: 3 for soft bedding, 2 for overlay, and 6 for wedging. Soft-bedding deaths occurred most often in an adult bed (49%), in a prone position (82%), and with a blanket (or blankets) obstructing the airway (34%). Overlay deaths occurred most often in an adult bed (71%), and infants were overlaid by the mother (47%). Wedging deaths occurred most often when the infant became entrapped between a mattress and a wall (48%).

CONCLUSIONS

Safe sleep environments can reduce infant suffocation deaths. Increased knowledge about the characteristics of suffocation deaths can help inform prevention strategies by targeting highest-risk groups.

Racial differences within subsets of Sudden Unexpected Infant Death (SUID) with an emphasis on asphyxia

OBJECTIVE

Sudden Unexpected Infant Deaths (SUID) is defined as a combination of Sudden Infant Death Syndrome (SIDS), Unknown Cause of Death (UCD) and Accidental Suffocation and Strangulation in Bed (ASSB). Overall rates from 2000 to 2015 have been trending down. Racial differences in occurrence are seen.

STUDY DESIGN AND SETTING

Using the CDC Wonder Database, the total rates of SUID and its subsets were examined.

RESULTS

Non-Caucasian infant death rates for the total SUID group, and the SIDS component, are trending downward significantly faster than for Caucasians. UCD trends in rates show an apparent small, non-significant, decline for non-Caucasians, and are unchanged for Caucasians. ASSB rates are trending upward slightly more rapidly (not significantly) for non-Caucasians than Caucasians.

CONCLUSION

The trend showing ASSB trending upward more in non-Caucasians than Caucasians may suggest: 1) A racial difference that certifiers are more willing to certify SIDS than ASSB in Caucasians, and/or 2) Certifiers are biased towards certifying more ASSB than SIDS in non-Caucasians, and/or 3) Asphyxia risks may be increasing more in non-Caucasian SUIDs. Option #1 would require educational efforts to recognize the asphyxia risks in Caucasians. Option #2 would require documentation of racial bias in infant death certification followed by efforts to reduce the bias. Option #3 would require focused targeting of non-Caucasian populations to reduce asphyxia risks. Potentially all three scenarios could co-exist.

Infant Suffocation Incidents Related to Co-Sleeping or Breastfeeding in the Side-Lying Position in Japan

Co-sleeping and breastfeeding in the side-lying position have recently been pointed out as risk factors for suffocation in sleeping infants; however, there is no actual report on an "incident." "Incident" is defined as a tense or sobering experience without a consequential fatal suffocation accident. It is important to understand infant suffocation incidents to prevent accidents during co-sleeping and breastfeeding in the side-lying position. We investigated factors and frequency of infant suffocation incidents associated with co-sleeping and breastfeeding in the side-lying position using a self-administered questionnaire survey of 895 mothers during their infant's 1-, 4-, or 10-month health checkups. Co-sleeping and breastfeeding in the side-lying position were practiced by 28.3% and 56.0% of mothers, respectively; thus, 84.3% of the mothers surveyed were practicing either co-sleeping or breastfeeding in the side-lying position. Of those who received guidance from a medical professional, 36.1% practiced only co-sleeping while 60.1% practiced only side-lying breastfeeding. In the co-sleeping group, 10.6% had faced infant suffocation incidents, while 13.2% in the breastfeeding in the side-lying position group had faced similar incidents. Regarding factors associated with suffocation incidents while co-sleeping, the frequency of occurrence was significantly more in mothers of 1-month and 4-month-old infants compared with those of 10-month-old infants. Of mothers who faced suffocation incidents while breastfeeding in the side-lying position, 45% also had faced similar incidents while co-sleeping. These results demonstrate the importance of thoroughly educating mothers about the risks associated with co-sleeping and breastfeeding in the side-lying position for preventing infant suffocation.

Sudden Unexpected Infant Death Certification in New York City: Intra-Agency Guideline Compliance and Variables that May Influence Death Certification

INTRODUCTION

Differences in certification of similar sudden infant deaths exists among forensic pathologists. This study sought to measure adherence to intra-agency guidelines for infant death certification in one jurisdiction and describe variables that may be associated with the differentiation of sudden infant death syndrome (SIDS), asphyxia, and undetermined death certifications.

METHODS

A retrospective study of deaths at the New York City Office of Chief Medical Examiner identified 427 sudden infant deaths with investigation and autopsy whose cause of death was ruled SIDS, asphyxia, or undetermined. Cases were reviewed for number and types of risk factors for asphyxia, demonstrable evidence of asphyxia, potential competing causes of death, and a doll reenactment. Descriptive and statistical analysis was performed.

RESULTS

Of 427 deaths, the causes of 100 deaths (23.4%) were ruled asphyxia; 43 (10.0%) SIDS; and 284 (66.5%) undetermined. Forensic pathologists conformed to agency guidelines in 406 deaths (95.1%). Three or more risk factors for asphyxia were found in 328 deaths (76.8%). Demonstrable evidence of asphyxia (40.7%) was most associated with a certification of asphyxia. A potential competing cause of death (20%) was most associated with undetermined. A doll reenactment had little association with certification type.

DISCUSSION

Guidelines in one agency were effective at limiting incorrect SIDS diagnoses. The interpretation of risk factors can be subjective. Diagnostic overlap occurred in deaths certified differently as SIDS, asphyxia, and undetermined, despite similar findings. Elimination of SIDS as a certification option and better guidelines that help differentiate asphyxia and undetermined deaths are recommended for improved infant death certification.

Types of Objects in the Sleep Environment Associated With Infant Suffocation and Strangulation

OBJECTIVE

To investigate the circumstances of death and types and roles of objects present in the sleep environment at the time of death for infants who died from suffocation or strangulation during sleep.

METHODS

This study analyzed 1736 reported incidents of accidental suffocation and strangulation in bed (ASSB) of infants younger than 1 year of age. These fatalities occurred from 2000 through 2012 and were reported to the United States Consumer Product Safety Commission.

RESULTS

The mean age of ASSB death was 3.76 months (SD, 2.51). Infants younger than 5 months accounted for 67.3% (1168 of 1736) of all reported fatalities and 58.3% (1009 of 1731) were male. Deceased infants were often found in a crib or bassinet (30.6%; 383 of 1253) or in the prone orientation (84.9%; 595 of 701). The most common objects associated with infant ASSB were pillows (24.5%; 425 of 1736), mattresses (21.0%; 364 of 1736), blankets (13.1%; 228 of 1736), and walls (11.5%; 199 of 1736). Wedged (43.3%; 616 of 1424) or positioned on top of an object (25.9%; 369 of 1424) were the most common positions associated with death. Infants were often found wedged between a mattress and wall (30.2%; 181 of 599) or oriented face-down or prone on top of a pillow (52.2%; 187 of 358). Sleep surface sharing was associated with 6.5% (112 of 1736) of ASSB deaths.

CONCLUSIONS

Pillows and blankets are objects in sleep environments frequently associated with unintentional suffocation and strangulation of infants. Increased efforts should be made to remove these and other objects from sleep environments of infants.

Health education intervention promoting infant safe sleep in paediatric primary care: randomised controlled trial

BACKGROUND

Few randomised controlled trials (RCTs) have been conducted to improve infant sleep practices. There is limited research on how best to integrate safe sleep information into routine paediatric anticipatory guidance delivered at well child visits (WCVs). This protocol paper describes the design of the Safe Start Study, which aims to evaluate the impact of safe sleep interventions on parents' knowledge, beliefs and behaviours related to creating and maintaining a safe sleep environment for their infants.

METHODS

Safe Start is a three-group RCT comparing a safe sleep health education intervention delivered as part of the 2-week WCV, an attention-matched control group that receives a scald burn prevention intervention, and a standard of care group. A baseline survey is completed at the 2-week WCV; follow-up surveys and observations are completed in the home at 2-4 weeks and 2-3 months. Participants include mother-baby dyads attending a large urban paediatric primary care practice and their paediatricians. Primary outcomes are self-reported behaviours (baby sleeps alone, on back, in crib and in a smoke-free environment), observations of the sleep environment, paediatricians' anticipatory guidance counselling about safe sleep and participants' reported exposure to an existing city-wide safe sleep campaign.

DISCUSSION

Providing a theory-driven and evidenced-based safe sleep intervention is both a research and a clinical practice priority. This study will advance the application of educational and environmental interventions in the primary care setting to improve the safety of infant sleep environments in high-risk families.

TRIAL REGISTRATION NUMBER

NCT03070639; Pre-results.

Predictors of Maternal Trust in Doctors About Advice on Infant Care Practices: The SAFE Study

OBJECTIVE

To determine predictors of maternal trust in doctors about advice on infant care practices.

METHODS

Using probability sampling methods, we recruited mothers from 32 US maternity hospitals. Mothers completed a survey 2 to 6 months postpartum that included questions about maternal trust in doctors regarding 6 infant care practices and physician characteristics (doctor asked mother's opinion, doctor is qualified, infant sees 1 main doctor who is/is not of the same ethnicity/race). Prevalence estimates and 95% confidence intervals were calculated for maternal trust in physician advice for each infant care practice. Multivariate logistic regression was used to calculate the independent association of maternal and physician characteristics and trust for each infant care practice, controlling for sociodemographic characteristics.

RESULTS

Of the 3983 mothers enrolled from January 2011 to March 2014, 3297 (83%) completed the follow-up survey. Maternal trust in the doctor varied according to infant care practice with highest trust for vaccination (89%) and lowest trust for pacifier use (56%). In the adjusted analyses, for all infant care practices, mothers were more likely to trust their doctors if they reported that the doctors were qualified (adjusted odds ratio [AOR], >3.0 for all practices) or if the doctor had asked their opinion (AOR, 1.76-2.43). For mothers who reported seeing 1 main doctor, white mothers were more likely to trust physicians for almost all infant care practices if they reported the doctor was the same race (AOR, 1.54-2.19).

CONCLUSIONS

Physician characteristics and ways of communication were significantly associated with maternal trust in doctors about advice on infant care practices.

Comparison of Infant Sleep Practices in African-American and US Hispanic Families: Implications for Sleep-Related Infant Death

African-American and Hispanic families share similar socioeconomic profiles. Hispanic rates of sleep-related infant death are four times lower than African-American rates. We conducted a cross-sectional, multi-modal (surveys, qualitative interviews) study to compare infant care practices that impact risk for sleep-related infant death in African-American and Hispanic families. We surveyed 422 African-American and 90 Hispanic mothers. Eighty-three African-American and six Hispanic mothers participated in qualitative interviews. African-American infants were more likely to be placed prone (p < 0.001), share the bed with the parent (p < 0.001), and to be exposed to smoke (p < 0.001). Hispanic women were more likely to breastfeed (p < .001), while African-American women were more knowledgeable about SIDS. Qualitative interviews indicate that, although African-American and Hispanic parents had similar concerns, behaviors differed. Although the rationale for infant care decisions was similar for African-American and Hispanic families, practices differed. This may help to explain the racial/ethnic disparity seen in sleep-related infant deaths.

Sudden unexpected infant death in Jordan and the home environment

BACKGROUND

The aim of this study was to evaluate maternal common practice for infant sleep care and the home environment, in order to explore the major risk factors associated with sudden unexpected infant death in Jordan.

METHODS

Data were collected via semi-structured questionnaire interview to investigate the sociodemographic features, infant sleep practices and home environments. The sample included 604 mothers with infants <1 year old. Descriptive statistics were generated.

RESULTS

Sleep practices were identified as leading factors in unexpected infant death. They included infant head covering (84%), heavy bedding with multiple quilts (81%) or blankets (67%), and co-bedding (66%). Environmental risk factors included high incidence of smoking, exposure to toxic solid fuel heaters during winter and inadequate room ventilation.

CONCLUSION

Factors leading to unexpected infant death were high in Jordan. Unsafe infant sleeping practices and poor environmental factors put infants at high risk of sudden death. Lack of awareness of risk factors increases the risk.

SIDS and Other Sleep-Related Infant Deaths: Evidence Base for 2016 Updated Recommendations for a Safe Infant Sleeping Environment

Approximately 3500 infants die annually in the United States from sleep-related infant deaths, including sudden infant death syndrome (SIDS), ill-defined deaths, and accidental suffocation and strangulation in bed. After an initial decrease in the 1990s, the overall sleep-related infant death rate has not declined in more recent years. Many of the modifiable and nonmodifiable risk factors for SIDS and other sleep-related infant deaths are strikingly similar. The American Academy of Pediatrics recommends a safe sleep environment that can reduce the risk of all sleep-related infant deaths. Recommendations for a safe sleep environment include supine positioning, use of a firm sleep surface, room-sharing without bed-sharing, and avoidance of soft bedding and overheating. Additional recommendations for SIDS risk reduction include avoidance of exposure to smoke, alcohol, and illicit drugs; breastfeeding; routine immunization; and use of a pacifier. New evidence and rationale for recommendations are presented for skin-to-skin care for newborn infants, bedside and in-bed sleepers, sleeping on couches/armchairs and in sitting devices, and use of soft bedding after 4 months of age. In addition, expanded recommendations for infant sleep location are included. The recommendations and strength of evidence for each recommendation are published in the accompanying policy statement, "SIDS and Other Sleep-Related Infant Deaths: Updated 2016 Recommendations for a Safe Infant Sleeping Environment," which is included in this issue.

Behavioral Interventions for Infant Sleep Problems: A Randomized Controlled Trial

OBJECTIVES

To evaluate the effects of behavioral interventions on the sleep/wakefulness of infants, parent and infant stress, and later child emotional/behavioral problems, and parent-child attachment.

METHODS

A total of 43 infants (6-16 months, 63% girls) were randomized to receive either graduated extinction (n = 14), bedtime fading (n = 15), or sleep education control (n = 14). Sleep measures included parent-reported sleep diaries and infant actigraphy. Infant stress was measured via morning and afternoon salivary cortisol sampling, and mothers' self-reported mood and stress. Twelve months after intervention, mothers completed assessments of children's emotional and behavioral problems, and mother-child dyads underwent the strange situation procedure to evaluate parent-child attachment.

RESULTS

Significant interactions were found for sleep latency (P < .05), number of awakenings (P < .0001), and wake after sleep onset (P = .01), with large decreases in sleep latency for graduated extinction and bedtime fading groups, and large decreases in number of awakenings and wake after sleep onset for the graduated extinction group. Salivary cortisol showed small-to-moderate declines in graduated extinction and bedtime fading groups compared with controls. Mothers' stress showed small-to-moderate decreases for the graduated extinction and bedtime fading conditions over the first month, yet no differences in mood were detected. At the 12-month follow-up, no significant differences were found in emotional and behavioral problems, and no significant differences in secure-insecure attachment styles between groups.

CONCLUSIONS

Both graduated extinction and bedtime fading provide significant sleep benefits above control, yet convey no adverse stress responses or long-term effects on parent-child attachment or child emotions and behavior.

Reasons for mother-infant bed-sharing: a systematic narrative synthesis of the literature and implications for future research

Mother-infant bed-sharing has been a common practice for centuries. Understanding the reasons parents choose to bed-share can help tailor safe sleep education. The purpose of this article was to systematically review the international literature on: (1) reasons parents bed-share, (2) the cultural context of bed-sharing, and (3) implications for interventions and future research. The search occurred August-September 2013 via PubMed, CINAHL, and Psyc INFO using the terms: "infant," "sleep," "bed shar*," "co sleep*," "sleep location," "sleep practices," and "sleep arrangements," alone or in combination. Google Scholar was searched using: "bed share," "bed sharing," "co sleep," and "co sleeping." Inclusion criteria were: (1) referenced bed-sharing with infants 12 months or younger; (2) provided reasons for bed-sharing; and (3) published between 1990 and 2013. Studies were excluded if they focused on disorders such as epilepsy, breathing disorders, or among multi-gestational infants. Narrative synthesis was used to summarize findings. Thirty-four studies met inclusion criteria. The main themes around bed-sharing based on this synthesis included: (1) breastfeeding, (2) comforting, (3) better/more sleep, (4) monitoring, (5) bonding/attachment, (6) environmental, (7) crying, (8) tradition, (9) disagree with danger, and (10) maternal instinct. Findings suggest that future research should examine parents' decision-making process on infant sleep location, including how they weigh personal reasons and sources of advice. Public health interventions should incorporate the particular reasons of the population they are targeting. Clinicians should discuss infant sleep environment with each family, along with their motivations for choosing this environment, and work within that framework to address the safety of the sleep environment.

Evaluation of bedtime basics for babies: a national crib distribution program to reduce the risk of sleep-related sudden infant deaths

Rates of sleep-related infant deaths have remained stagnant in recent years. Although most parents are aware of safe sleep recommendations, barriers to adherence, including lack of access to a safe crib, remain. The objective of this study was to describe parental knowledge and practices regarding infant sleep position, bedsharing, pacifier use, and feeding practices before and after receipt of a free crib and safe sleep education. Bedtime Basics for Babies (BBB) enrolled high-risk families in Washington, Indiana, and Washington, DC and provided them with cribs and safe sleep education. Parents completed surveys before ("prenatal" and "postnatal") and 1-3 months after crib receipt ("follow-up"). Descriptive and bivariate analyses were completed. 3,303 prenatal, 1,483 postnatal, and 1,729 follow-up surveys were collected. Parental knowledge of recommended infant sleep position improved from 76% (prenatal) and 77% (postnatal) to 94% after crib receipt (p < 0.001). Intended use of supine positioning increased from 84% (prenatal) and 80% (postnatal) to 87% after the intervention (p < 0.001). Although only 8% of parents intended to bedshare when asked prenatally, 38% of parents receiving the crib after the infant's birth reported that they had bedshared the night before. This decreased to 16% after the intervention. Ninety percent reported that the baby slept in a crib after the intervention, compared with 51% postnatally (p < 0.01). BBB was successful in changing knowledge and practices in the majority of high-risk participants with regards to placing the infant supine in a crib for sleep. Crib distribution and safe sleep education positively influence knowledge and practices about safe sleep.

International comparison of sudden unexpected death in infancy rates using a newly proposed set of cause-of-death codes

BACKGROUND

Comparing rates of sudden unexpected death in infancy (SUDI) in different countries and over time is difficult, as these deaths are certified differently in different countries, and, even within the same jurisdiction, changes in this death certification process have occurred over time.

AIMS

To identify if International Classification of Diseases-10 (ICD-10) codes are being applied differently in different countries, and to develop a more robust tool for international comparison of these types of deaths.

METHODS

Usage of six ICD-10 codes, which code for the majority of SUDI, was compared for the years 2002-2010 in eight high-income countries.

RESULTS

There was a great variability in how each country codes SUDI. For example, the proportion of SUDI coded as sudden infant death syndrome (R95) ranged from 32.6% in Japan to 72.5% in Germany. The proportion of deaths coded as accidental suffocation and strangulation in bed (W75) ranged from 1.1% in Germany to 31.7% in New Zealand. Japan was the only country to consistently use the R96 code, with 44.8% of SUDI attributed to that code. The lowest, overall, SUDI rate was seen in the Netherlands (0.19/1000 live births (LB)), and the highest in New Zealand (1.00/1000 LB). SUDI accounted for one-third to half of postneonatal mortality in 2002-2010 for all of the countries except for the Netherlands.

CONCLUSIONS

The proposed set of ICD-10 codes encompasses the codes used in different countries for most SUDI cases. Use of these codes will allow for better international comparisons and tracking of trends over time.

Infant suffocation in place of sleep: New Zealand national data 2002-2009

BACKGROUND

Accidental suffocation during sleep, leading to death, has been described as due to overlay or wedging of infants, particularly in a bed-sharing situation. Bed sharing is a risk factor for sudden infant death syndrome but the mechanism of death is not clearly defined. Accidental suffocation may be one such mechanism.

OBJECTIVE

To describe accidental suffocation deaths during sleep in New Zealand between 2002 and 2009.

DESIGN

The New Zealand mortality database, which holds data collected by the Child Youth Mortality Review Committee and the Perinatal and Maternal Mortality Review Committee, was searched for potential deaths by accidental suffocation in infants less than 1 year of age. Deaths underwent a detailed analysis by demographic data and qualitative report.

RESULTS

There were 48 deaths due to accidental suffocation between 2002 and 2009 in New Zealand, equating to a rate of 0.10 deaths per 1000 live births. The most common age at death was 1 month or under (n=11, 23%). Deaths were due to overlay (n=30, 63%) or wedging (n=18, 37%) and two-thirds (n=34, 71%) were in a bed-sharing situation. A quarter of deaths (n=12, 25%) occurred in makeshift bedding arrangements, some of which were away from home.

CONCLUSIONS

Accidental suffocation in bed was responsible for 48 preventable deaths. Prevention of these accidental deaths needs to focus on supporting changes in family behaviour with safety messages that are consistent, persistent and disseminated widely.

An evidence-based guide to the investigation of sudden unexpected death in infancy

PURPOSE

Many countries now have detailed investigations following sudden unexpected death in infancy (SUDI) but there is no clear evidence as to the most effective way to investigate SUDI. This systematic literature review addresses the following questions: What are the current models of practice for investigating SUDI? What is the evidence to support these investigative models? What are the key factors for effective SUDI investigation?

METHODS

This was a systematic review of papers from Europe, North America, and Australasia, detailing models of SUDI investigation or the outcomes of SUDI investigations.

RESULTS

The review includes data detailing four different models of investigation: police-led, coroner or medical examiner-led, healthcare-led or joint agency approach models. There were 18 different publications providing evidence of effectiveness of these models. All models, with the exception of police-led models, have the potential to reach best practice standards for SUDI investigation. Key factors identified for effective SUDI investigation include the need for mandatory investigation, strong leadership, integration with coronial services, and for investigations to be provided by specialist professionals.

CONCLUSION

Detailed SUDI investigation should lead to greater understanding of why infants die and should help prevent future deaths. The challenge is now to ensure that local SUDI investigative practices are as effective as possible.

Controversies in pediatric forensic pathology

Pediatric forensic pathology is an emerging medical subspecialty that spans the area between pediatric and forensic pathology. Advances in both of these fields have increased the sophistication of diagnoses, with overlap of disorders that might present to either the pediatric or forensic pathologist, adding further layers of complexity. Not surprisingly, therefore, there are important ethical and medical controversies in pediatric forensic pathology that merit careful consideration and attention.

Housing influences among sleep-related infant injury deaths in the USA

This article examines the role of housing conditions in sleep-related infant injury death, a leading cause of infant mortality in the USA. The use of an unsafe sleep surface is a major risk factor for sleep-related infant injury. This exploratory study examined contextual circumstances, specifically those related to the physical environment, which may contribute to caregivers' decisions to place an infant on an unsafe sleep surface. It employed a retrospective review of 255 sleep-related infant injury death cases in a large urban area from 2004 to 2010 where an infant was found sleeping on an unsafe sleep surface, including 122 cases where a crib or bassinet was identified in the home. Quantitative findings indicated no differences in demographic or risk characteristics between infants with cribs or bassinets and those without them. Qualitative findings suggested the lack of crib or bassinet use may be related to environmental factors influenced by poverty, specifically crowded living space, room temperature and vermin infestation. This study suggests that infants may be at risk of sleep-related injury deaths even when a crib or bassinet is present in the home and supports the consideration of housing conditions in health promotion efforts to reduce infant mortality. Understanding environmental factors that may contribute to infants sleeping on an unsafe surface can help maternal child health and public health professionals develop more appropriate interventions that address deleterious living conditions.

Maternal nativity and sleep-related infant injury deaths in New York City

BACKGROUND

Half of all births in New York City are to women born outside of the United States whose infant care practices may differ from official recommendations from the American Academy of Pediatrics. These infants have an overall lower infant mortality rate than those of their US-born counterparts.

AIMS

The aims of this study were to examine sleep-related infant injury death, a leading cause of infant mortality, and its risk factors among infants of US-born and foreign-born women in a large, diverse urban area.

STUDY DESIGN

Data for 344 infant death cases from medical examiner and vital statistics records were analyzed. Rate ratios and 95% CIs, calculated with Poisson regression models, were used to quantify differences in death rates by maternal and infant characteristics. Bivariate and logistic regression analyses were used to examine differences within the sample of sleep-related infant injury deaths.

OUTCOME MEASURES

The outcome measures were rate of sleep-related injury death, and behavioral risk factors associated with these deaths: unsafe sleep positioning, bed-sharing, and excess bedding.

RESULTS

US-born mothers had a sleep-related infant injury death rate that was over three times that of foreign-born mothers, even when controlling for maternal race/ethnicity, education, and age. However, adverse sleep-related practices were not consistently more prevalent among US-born infants in the sample of deaths, even when controlling for those same demographic factors.

CONCLUSIONS

The higher rate of sleep-related infant injury death among infants of US-born mothers may be explained by more complex socio-demographic factors, or factors outside of infant sleep practices.

An evidence-based safe sleep teaching program

This column describes the experience of the units practice council in developing an evidence-based practice teaching program focused on safe sleep for newborn infants.

Investigation of Sudden Unexpected Infant Deaths

The investigation of infant death is complex and requires synergy between multiple agencies including law enforcement, Child Protective Services, medicolegal death investigators, and forensic pathologists. Prior to the forensic pediatric autopsy, the death investigator must identify the types of death scenes involved (e.g., hospital, residence, daycare) and document the details of the scene. Interviews must be conducted with the caregivers and other family members (including doll reenactments), law enforcement, pediatricians, and emergency medical personnel. The forensic pathologist must be able to conduct a comprehensive pediatric forensic autopsy and be aware of the specific challenges related to cases of sudden unexpected infant deaths. This article provides an overview of infant death investigation, discussing the roles and responsibilities of the medicolegal death investigator and the forensic pathologist.

Sleep environment risks for younger and older infants

OBJECTIVE

Sudden infant death syndrome and other sleep-related causes of infant mortality have several known risk factors. Less is known about the association of those risk factors at different times during infancy. Our objective was to determine any associations between risk factors for sleep-related deaths at different ages.

METHODS

A cross-sectional study of sleep-related infant deaths from 24 states during 2004-2012 contained in the National Center for the Review and Prevention of Child Deaths Case Reporting System, a database of death reports from state child death review teams. The main exposure was age, divided into younger (0-3 months) and older (4 months to 364 days) infants. The primary outcomes were bed-sharing, objects in the sleep environment, location (eg, adult bed), and position (eg, prone).

RESULTS

A total of 8207 deaths were analyzed. Younger victims were more likely bed-sharing (73.8% vs. 58.9%, P < .001) and sleeping in an adult bed/on a person (51.6% vs. 43.8%, P < .001). A higher percentage of older victims had an object in the sleep environment (39.4% vs. 33.5%, P < .001) and changed position from side/back to prone (18.4% vs. 13.8%, P < .001). Multivariable regression confirmed these associations.

CONCLUSIONS

Risk factors for sleep-related infant deaths may be different for different age groups. The predominant risk factor for younger infants is bed-sharing, whereas rolling into objects in the sleep area is the predominant risk factor for older infants. Parents should be warned about the dangers of these specific risk factors appropriate to their infant's age.

Programmatic impact of 5 years of mortality surveillance of New York City homeless populations

A homeless mortality surveillance system identifies emerging trends in the health of the homeless population and provides this information to key stakeholders in a timely and ongoing manner to effect evidence-based, programmatic change. We describe the first 5 years of the New York City homeless mortality surveillance system and, for the first time in peer-reviewed literature, illustrate the impact of key elements of sustained surveillance (i.e., timely dissemination of aggregate mortality data and real-time sharing of information on individual homeless decedents) on the programs of New York City's Department of Homeless Services. These key elements had a positive impact on the department's programs that target sleep-related infant deaths and hypothermia, drug overdose, and alcohol-related deaths among homeless persons.

An evaluation of portable sleeping spaces for babies following the Christchurch earthquake of February 2011

AIM

To describe how recipients of portable sleeping spaces (PSSs) for babies received and used these devices, offered as emergency baby beds in earthquake-ravaged Christchurch, New Zealand, 2011.

METHOD

The PSS package responded to increased risk to babies from disrupted living and sleeping conditions in families. 'Door-to-door' distribution offered easy access to those in need. A subgroup of recipients gave feedback via a survey.

RESULTS

From 642 families who received PSSs between March and August, 139 were invited to complete a survey on usage and 100 (72%) responded. Risks identified were 'earthquake related' (82%), bed-sharing (41%), smoking in pregnancy (26%) and prematurity or low birthweight (11%). PSSs were used for same-bed co-sleeping by 87%. They were used even though most families (96%) also had a cot or bassinet. Features most appreciated were 'having baby close' (90%), 'peace of mind' (88%) and portability (74%).

CONCLUSION

PSSs were acceptable to parents and used as instructed. Enabling physical protection of babies when same-bed co-sleeping, they gave peace of mind to parents. PSSs could be considered in ordinary times for protecting babies from sudden infant death.

Sudden infant death syndrome in Korea: a retrospective analysis of autopsy-diagnosed cases

This study aimed to elucidate the demographic and sleeping environmental factors associated with sudden infant death syndrome (SIDS) in Korea. The autopsy reports of all SIDS cases reported to the National Forensic Service and Seoul National University College of Medicine between 1996 and 2008 were reviewed for data collection and analysis to identify the risk factors for SIDS. Analysis of the 355 SIDS cases reported within the study period revealed that of the 168 (47.3%) cases for which sleeping position before death had been reported, 75 (44.7%) cases had occurred after placement in prone or side position. Of the 204 (57.5%) cases for which bed-sharing situation had been reported, 121 (59.3%) deaths had occurred during bed-sharing, of which 54 (44.6%) infants were under 3 months of age, a significantly younger age than that of the non-bed-sharing cases (P = 0.0279). Analysis of the results indicated no tendency toward an increase or decrease in the use of a prone or side position. Rather, there was a statistically significant increasing trend for bed-sharing over the study period (OR, 1.087; 95% CI, 1.004-1.177; P = 0.04). These findings indicate the need for nationwide educational programs promoting a safe sleeping environment to enhance SIDS prevention.

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.

Bed-sharing influences, attitudes, and practices: implications for promoting safe infant sleep

The purpose of this study was to examine the infant bed-sharing practices of mothers from the birth of the infant to three months of age. The study was a longitudinal descriptive design using a self-report instrument immediately after delivery with follow-up phone interviews at one and three months after discharge. While no mothers intended to bed-share with their infants immediately after delivery, 60 percent reported bed-sharing at some time at one month after discharge and 9 percent at three months. Only 19 percent of mothers reported receiving information about infant sleeping practices from their physician and 22 percent from their nurse. One month post discharge was identified as a high-risk period for infant bed-sharing. Interventions aimed at teaching new mothers about responding to infant cues and ways to manage a fussy infant may minimize the rate of bed-sharing.

Sudden infant death syndrome: an update

Based on strong research evidence: All infants should be placed in the supine position for every sleep. Tobacco exposure pre- and postnatally should be avoided. Room sharing without bed sharing is recommended. It is recommended that blankets, pillows, and other soft bedding be removed from the infant sleep area. Overheating should be avoided. Breastfeeding should be encouraged for SIDS risk reduction. Pacifier use should be encouraged for SIDS risk reduction. Immunizations should be encouraged for SIDS risk reduction. The evidence for fan use or swaddling as strategies to reduce the risk of SIDS is inconclusive.

Infant gender, shared sleeping and sudden death

AIM

To determine whether there is a gender imbalance in infant deaths in shared sleeping compared to solitary sleeping situations.

METHODS

Examination of autopsy reports of 133 infants aged between 7 and 364 days autopsied over a 19-year period from January 1991 to December 2009 was undertaken where death had either been attributed to SIDS, or had been classified as undetermined or unascertained. Cases were divided into two groups of solitary sleepers and shared sleepers, and the ratio of male to female cases was compared.

RESULTS

Ninety-five solitary sleepers were aged from 1 to 11 months (average 4.1 months) and consisted of 63 males (age range 1 to 11 months) and 32 females (age range 1 to 10 months). The 38 shared sleepers were aged from 1 week to 12 months (average 2.6 months) and consisted of 17 males (age range 2 weeks to 5 months) and 21 females (age range 1 week to 10 months). The male to female ratio in the solitary sleepers was approximately 2:1 and in the shared sleepers was 0.8:1, a statistically significant difference (p = 0.02).

CONCLUSION

The lack of a male predominance typical of SIDS cases in infants who were sleeping with others, compared to those who were sleeping alone, suggests that these situations may be different. It is possible, therefore, that different lethal mechanisms may be involved in some shared sleeping situations.

Sudden unexpected infant deaths: sleep environment and circumstances

OBJECTIVES

We sought to describe the characteristics and sleep circumstances of infants who die suddenly and unexpectedly and to examine similarities and differences in risk factors among infants whose deaths are classified as resulting from sudden infant death syndrome (SIDS), suffocation, or undetermined causes.

METHODS

We used 2005 to 2008 data from 9 US states to assess 3136 sleep-related sudden unexpected infant deaths (SUIDs).

RESULTS

Only 25% of infants were sleeping in a crib or on their back when found; 70% were on a surface not intended for infant sleep (e.g., adult bed). Importantly, 64% of infants were sharing a sleep surface, and almost half of these infants were sleeping with an adult. Infants whose deaths were classified as suffocation or undetermined cause were significantly more likely than were infants whose deaths were classified as SIDS to be found on a surface not intended for infant sleep and to be sharing that sleep surface.

CONCLUSIONS

We identified modifiable sleep environment risk factors in a large proportion of the SUIDs assessed in this study. Our results make an important contribution to the mounting evidence that sleep environment hazards contribute to SUIDs.

Gliosis in neonatal SUDI cases

AIM

To review sudden unexpected infant deaths (SUDI) in the first 28 days of life referred to a Coronial Perinatal Forensic Pathology Service over a 10-year period from 2000 to 2009.

METHODS

Cases were collected from mortuary records, and a retrospective review of autopsy reports and other available infant records was undertaken.

RESULTS

Twenty-four neonatal SUDI were reviewed. For eight infants, a diagnosis was made at autopsy. For the remaining 16 infants, 14 (87.5%) were bedsharing at the time of death. Maori infants and those living in deprived neighbourhoods were over-represented. Only two infants were preterm, and four were growth-restricted. At post-mortem, white matter gliosis was found in 10 of the 16 (62.5%) unexplained SUDI cases.

CONCLUSION

Sudden unexpected infant deaths occur in the first month of life in association with bedsharing. Gliosis may be an important associated risk factor, and its presence indicates a previous insult of prenatal onset.

SIDS and other sleep-related infant deaths: expansion of recommendations for a safe infant sleeping environment

Despite a major decrease in the incidence of sudden infant death syndrome (SIDS) since the American Academy of Pediatrics (AAP) released its recommendation in 1992 that infants be placed for sleep in a nonprone position, this decline has plateaued in recent years. Concurrently, other causes of sudden unexpected infant death occurring during sleep (sleep-related deaths), including suffocation, asphyxia, and entrapment, and ill-defined or unspecified causes of death have increased in incidence, particularly since the AAP published its last statement on SIDS in 2005. It has become increasingly important to address these other causes of sleep-related infant death. Many of the modifiable and nonmodifiable risk factors for SIDS and suffocation are strikingly similar. The AAP, therefore, is expanding its recommendations from being only SIDS-focused to focusing on a safe sleep environment that can reduce the risk of all sleep-related infant deaths including SIDS. The recommendations described in this report include supine positioning, use of a firm sleep surface, breastfeeding, room-sharing without bed-sharing, routine immunization, consideration of a pacifier, and avoidance of soft bedding, overheating, and exposure to tobacco smoke, alcohol, and illicit drugs. The rationale for these recommendations is discussed in detail in this technical report. The recommendations are published in the accompanying "Policy Statement--Sudden Infant Death Syndrome and Other Sleep-Related Infant Deaths: Expansion of Recommendations for a Safe Infant Sleeping Environment," which is included in this issue (www.pediatrics.org/cgi/doi/10.1542/peds.2011-2220).

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.

Racial and ethnic disparities in infant mortality

Racial and ethnic disparities in infant mortality in the United States seem to defy all attempts at elimination. Despite national priorities to eliminate these disparities, black infants are 2.5 times more likely to die in infancy compared with non-Hispanic white infants. This disparity is largely related to the greater incidence among black infants of prematurity and low birth weight, congenital malformations, sudden infant death syndrome, and unintentional injuries. This greater incidence, in turn, is related to a complex interaction of behavioral, social, political, genetic, medical, and health care access factors. Thus, to influence the persistent racial disparity in infant mortality, a highly integrated approach is needed, with interventions adapted along a continuum from childhood through the periods of young adulthood, pregnancy, postpartum and beyond. The content and methodologies of these interventions need to be adapted to the underlying behaviors, social influences, and technology and access issues they are meant to address.

Developing guidelines for child health care nurses to prevent nonsynostotic plagiocephaly: searching for the evidence

The aim of the project was to develop guidelines for nurses that can be incorporated into the Swedish child health care program to prevent nonsynostotic plagiocephaly in infants while still following sudden infant death syndrome preventive measures. Guidelines were developed by reviewing the literature, compiling evidence, appraising recommendations, and formulating a condensed version of relevant information for nurses. The guidelines were tested clinically in a Swedish pilot project.

Relationship between bed sharing and breastfeeding: longitudinal, population-based analysis

OBJECTIVES

This is an investigation into the longitudinal patterns of bed sharing, the characteristics associated with those patterns, and the relationship with breastfeeding.

METHODS

The study used prospective, population-based data from the United Kingdom to investigate nocturnal bed sharing at 5 time points from birth to 4 years of age. Of 14 062 live births, 7447 (53%) had data available for all time points.

RESULTS

Latent class analysis identified 4 mutually exclusive groups, broadly described as nonsharers (66%), early bed sharers (only in infancy) (13%), late bed sharers (after the first year) (15%), and constant bed sharers (throughout the 4 years) (6%). The boy/girl ratio and the proportion of families of nonwhite ethnicity were slightly higher in all 3 bed-sharing groups, compared with the non-bed-sharing group. Higher maternal educational achievement and higher social class were positively associated with early bed sharing, negatively associated with late bed sharing, and not associated with constant bed sharing. The 3 bed-sharing patterns were related significantly to breastfeeding at 12 months (P < .001), whether the families shared beds late (odds ratio: 1.72 [95% confidence interval: 1.36-2.18]), early (odds ratio: 2.36 [95% confidence interval: 1.87-2.97]), or for the whole period (odds ratio: 5.29 [95% confidence interval: 4.05-6.91]). The prevalence of breastfeeding was significantly higher among the groups that shared beds constantly or early for each of the first 15 months after birth.

CONCLUSIONS

Advice on whether bed sharing should be discouraged needs to take into account the important relationship with breastfeeding.

Bed sharing among black infants and sudden infant death syndrome: interactions with other known risk factors

OBJECTIVE

Bed sharing has been associated with sudden infant death syndrome (SIDS) and may contribute to the racial disparity seen in infant mortality. It is unclear how bed sharing interacts with other factors to impact SIDS risk. We aimed to measure the effects of bed sharing on risk of SIDS in blacks and to determine whether the risk is modified by other characteristics of the sleep environment.

METHODS

Characteristics of 195 black infants who died of SIDS were compared with matched controls. The moderating influence of known SIDS risk factors on the effect of bed sharing on risk of SIDS was examined using logistic regression.

RESULTS

Almost half (47.4%) of the study population bed shared during the last/reference sleep (58% cases and 37% controls). Bed sharing was associated with 2 times greater risk of SIDS compared with not bed sharing. The deleterious effect of bed sharing was more pronounced with a soft sleep surface, pillow use, maternal smoking, and younger infant age. However, bed sharing was still associated with an increased risk of SIDS, even when the infant was not using a pillow or sleeping on a firm surface. The strongest predictors of SIDS among bed-sharing infants were soft sleep surface, nonuse of a pacifier, and maternal smoking during pregnancy.

CONCLUSIONS

Bed sharing is a common practice among black infants. It is associated with a clear and strong increased risk of SIDS, which is even greater when combined with other known risk factors for SIDS. This practice likely contributes to the excess incidence of SIDS among blacks, and culturally competent education methods must be developed to target this high-risk group.