Prevalence and Correlates of Unstable Housing Among US Children.

Importance: Housing instability is an important public health issue, particularly for children. This study provides nationally representative estimates of unstable housing among US children. Objective: To examine unstable housing prevalence; differences by sociodemographic characteristics, health, and state of residence; and associations with other hardships. Design, Setting, and Participants: This survey study examined data from the 2022 National Survey of Children's Health, a population-based, nationally representative survey of randomly selected children whose parent or caregiver responded to an address-based mail or web-based survey. Participants were children aged 0 to 17 years living in households in the 50 US states and District of Columbia (N = 54 103). Bivariate analyses tested for observed differences in unstable housing between groups; logistic regression models tested for significant disparities. Associations between unstable housing and health care and food-related hardships, neighborhood conditions, and adverse childhood experiences were examined. Exposure: Unstable housing experiences. Main Outcomes and Measures: Unstable housing, comprising 3 indicators: inability to pay mortgage or rent on time in the past 12 months, 2 or more moves in the past 12 months, and homelessness in the child's lifetime. Analyses were adjusted for child age and family poverty ratio. Secondary analyses examine caregiver-reported stress or worry about eviction, foreclosure, or condemned housing in the past 12 months. Weighted prevalence estimates accounted for probability of selection and nonresponse. Results: In 2022, 17.1% (95% CI, 16.4%-17.8%) of children living in US households, representing more than 12.1 million children, experienced 1 or more forms of unstable housing: 14.1% (95% CI, 13.4%-14.7%) lived in households that were unable to pay mortgage/rent, 2.9% (95% CI, 2.6%-3.3%) moved frequently, and 2.5% (95% CI, 2.2%-2.8%) experienced lifetime homelessness. Additionally, 9.0% (95% CI, 8.5%-9.5%) of children had caregivers who reported stress/worry over housing. Prevalence of unstable housing varied across states (range, 12.0%-26.6%). Unstable housing was highest among American Indian or Alaska Native children (27.9%; 95% CI, 21.3%-35.6%), Black or African American children (30.4%; 95% CI, 27.8%-33.1%), and Native Hawaiian or Pacific Islander children (27.6%; 95% CI, 16.6%-42.1%) and also differed by special health care needs, family poverty ratio, caregiver education and unemployment status, and whether the family rented or owned their home. Unstable housing was associated with all other types of hardships examined. Conclusions and Relevance: This study found that 1 in 6 US children experienced unstable housing, varying by state and sociodemographic factors. The prevalence is likely underestimated because the sample excluded children who are currently institutionalized or experiencing homelessness. Results may help move the field toward a unified national definition of unstable housing for families with children and lead to clinically appropriate and evidence-based screening and interventions to support housing stability and improve children's health.

Association between Child Tax Credit advance payments and food insufficiency in households experiencing economic shocks.

The COVID-19 pandemic brought increases in economic shocks due to poor health and lost employment, which reduced economic well-being, especially in households with children. The American Rescue Plan Act of 2021 expanded Child Tax Credit (CTC) payments to include eligibility for the lowest income households, boosted benefit levels, and provided monthly advance payments to households with children. Using Census Household Pulse Survey respondent data from January 2021 to July 2022, we evaluated the association between these advance CTC monthly payments and food insufficiency among households with children experiencing health- or employment-related economic shocks (defined as missed work due to COVID-19/other illness or COVID-19-related employer closure/layoff/furlough). Using a triple difference design, we found that the advance CTC was associated with greater reductions in food insufficiency among households with children experiencing economic shocks both compared with households without children and with households with children not experiencing economic shocks. Permanently expanding the advance CTC could create resilience to economic shocks during disease outbreaks, climate disasters, and recessions.

A Short Adverse Experiences Measure Among Mothers of Young Children.

OBJECTIVES: Screening for parental adverse childhood experiences (ACEs) in pediatric settings can be burdensome because of the questionnaire's length and sensitive nature. Rapid screening tools may help address these challenges. We evaluated a 2-item short ACE measure developed for adults in a cross-sectional sample of mothers of young children in an urban pediatric emergency department. METHODS: From January 2011 to March 2020, we administered the ACE questionnaire in English or Spanish to 3999 biological mothers of children aged <4 years in a pediatric emergency department in Philadelphia, Pennsylvania. We assessed sensitivity and specificity of a shortened 2-item ACE measure defined as report of childhood emotional abuse and/or household substance use, using 4+ ACEs on the full questionnaire as the standard. We assessed convergent validity by comparing associations of the 2-item and standard measures with maternal, household, and child outcomes using adjusted log-binomial regression. RESULTS: Mothers were racially and ethnically diverse (54% Latina, 35% Black non-Latina); 94% of children were publicly insured. Thirteen percent of mothers reported childhood emotional abuse and 16% childhood household substance use; 23% reported at least 1 of these and 6% both. Compared with 4+ ACEs on the full questionnaire, the 2-item measure had sensitivity 88% and specificity 90%. In adjusted models, high adversity was associated with poor maternal, household, and child outcomes. CONCLUSIONS: A 2-item ACE measure assessing childhood emotional abuse and household substance use may be useful in pediatric settings to identify mothers who may have experienced significant child adversity and inform development, testing, or provision of comprehensive family supports.

Development and Validation of an Abbreviated Child and Adult Food Security Scale for Use in Clinical and Research Settings in the United States.

BACKGROUND: Food insecurity (FI) prevalence was consistently >10% over the past 20 years, indicating chronic economic hardship. Recession periods exacerbate already high prevalence of FI, reflecting acute economic hardship. To monitor FI and respond quickly to changes in prevalence, an abbreviated food security scale measuring presence and severity of household FI in adults and children is needed. OBJECTIVE: Our aim was to develop an abbreviated, sensitive, specific, and valid food security scale to identify severity levels of FI in households with children. DESIGN: Cross-sectional and longitudinal survey data were analyzed for years 1998 to 2022. PARTICIPANTS/SETTING: Participants were racially diverse primary caregivers of 69,040 index children younger than 4 years accessing health care in 5 US cities. STATISTICAL ANALYSES PERFORMED: Sensitivity, specificity, positive and negative predictive values, accuracy, and area under the receiver operator curve were used to test combinations of questions for the most effective abbreviated scale to assess levels of severity of adult and child FI compared with the Household Food Security Survey Module. Adjusted logistic regression models assessed convergent validity between the Abbreviated Child and Adult Food Security Scale (ACAFSS) and health measures. McNemar tests examined the ACAFSS performance in times of acute economic hardship. RESULTS: The ACAFSS exhibited 91.2% sensitivity; 99.6% specificity; 98.3% and 97.6% positive and negative predictive values, respectively; 97.7% accuracy; and a 99.6% area under the receiver operator curve, while showing high convergent validity. CONCLUSIONS: The ACAFSS is highly sensitive, specific, and valid for detecting severity levels of FI among racially diverse households with children. The ACAFSS is recommended as a stand-alone scale or a follow-up scale after households with children screen positive for FI risk. The ACAFSS is also recommended for planning interventions and evaluating their effects not only on the binary categories of food security and FI, but also on changes in levels of severity, especially when rapid decision making is crucial.

Child Care Feeding Programs Associated With Food Security and Health for Young Children From Families With Low Incomes.

BACKGROUND: The Child and Adult Care Food Program is the primary national program that enables child-care settings to provide healthy meals for children. Associations between Child and Adult Care Food Program participation and child health and development and health care utilization are understudied. OBJECTIVE: To assess associations between children's health, development, health care utilization and food security by meal source (child-care-provided vs parent-provided) among children from low-income families with a child care subsidy attending child-care in settings likely eligible to participate in Child and Adult Care Food Programs. DESIGN: The study used repeat cross-sectional surveys (new sample at successive time points) conducted year-round. PARTICIPANTS AND SETTING: Primary caregivers of 3,084 young children accessing emergency departments or primary care in Baltimore, MD; Boston, MA; Little Rock, AR; Minneapolis, MN; and Philadelphia, PA, were interviewed between 2010 and 2020. The sample was limited to children aged 13 to 48 months, receiving a child care subsidy and attending child-care centers or family child-care homes ≥20 hours per week. MAIN OUTCOME MEASURES: Outcomes included household and child food security; child health, growth, and developmental risk; and admission to the hospital on the day of the emergency department visit. STATISTICAL ANALYSES: Meal source and participant characteristics were analyzed using χ2 tests; associations of outcomes with parent-provided meals were analyzed with adjusted logistic regression. RESULTS: The majority of children had child-care-provided meals (87.2% child-care-provided vs 12.8% parent-provided). Compared with children with parent-provided meals, children with child-care-provided meals had lower adjusted odds of living in a food-insecure household (adjusted odds ratio 0.70, 95% CI 0.55 to 0.88), being in fair or poor health (adjusted odds ratio 0.61, 95% CI 0.46 to 0.81), or hospital admission from the emergency department (adjusted odds ratio 0.59, 95% CI 0.41 to 0.83), with no differences in growth or developmental risk. CONCLUSIONS: Compared with meals provided from home, child-care-provided meals likely supported by the Child and Adult Care Food Program are related to food security, early childhood health, and reduced hospital admissions from an emergency department among low-income families with young children.

Association Between Material Hardship in Families With Young Children and Federal Relief Program Participation by Race and Ethnicity and Maternal Nativity.

Importance: Even brief periods of hardship during early childhood may have lifelong consequences. Prior cross-sectional research limited to respondents with English proficiency and internet access during the COVID-19 crisis documented families with young children that struggled to afford basic needs like food and rent. Few studies have examined experiences of families with young children by race and ethnicity and maternal nativity. Objective: To examine the association of COVID-19 relief programs with the mitigation of household food insecurity among families with young children, as well as being behind on rent and disparities in program receipt. Design, Setting, and Participants: This cohort study used data from the ongoing repeat cross-sectional Children's HealthWatch study comprising families surveyed at baseline (January 1, 2018, to March 20, 2020) and during the COVID-19 crisis (September 1, 2020, to June 30, 2021). Baseline questionnaires were administered face to face to caregivers of children aged 48 months or younger in English or Spanish in emergency departments or primary care clinics in 5 US cities. The follow-up questionnaires were administered via telephone. Exposures: Supplemental Nutrition Assistance Program (SNAP) participation or receipt of at least 1 Economic Impact Payment (EIP; ie, stimulus check) during the COVID-19 crisis. Main Outcomes and Measures: The primary outcomes were household food insecurity (assessed via the US Household Food Security Survey Module: Six-Item Short Form) and being behind on rent. Logistic and binomial regression models were used to calculate adjusted odds ratios (aORs) and unadjusted and adjusted prevalence ratios (PRs). Results: Of 1396 caregiver-child dyads (20.3% response rate), race and ethnicity data were available for 1357 caregivers: 514 (37.9%) were Black, non-Latino; 558 (41.1%) were Latino; 230 (16.9%) were White, non-Latino; and 55 (4.1%) were of other non-Latino race or ethnicity. Among 1390 responses with nonmissing data, 417 children (30.0%) had an immigrant mother, and among 1388 responses, 1238 (33.5%) were publicly insured. During the crisis, 467 of 1395 respondents (33.5%) reported household food insecurity, and 567 of 1391 respondents (40.8%) reported being behind on rent. Families with immigrant mothers had lower odds of EIP and SNAP participation than families with US-born mothers (eg, aOR, 0.07 [95% CI, 0.05-0.12] for both EIP and SNAP vs neither), despite being more likely to report household food insecurity (adjusted PR [aPR], 1.48 [95% CI, 1.28-1.71]) and being behind on rent (aPR, 1.14 [95% CI, 1.00-1.30]). Families with Black (unadjusted PR [uPR], 1.40 [95% CI, 1.08-1.82]) or Latino (uPR, 1.54 [95% CI, 1.19-1.98]) caregivers or caregivers of other race and ethnicity (uPR, 1.67 [1.12-2.49]) were also more likely than families with White, non-Latino caregivers to experience household food insecurity or being behind on rent (families with Black caregivers: uPR, 2.02 [95% CI, 1.58-2.58]; families with Latino caregivers: 1.68 [95% CI, 1.30-2.16]; families with caregivers of other race or ethnicity: uPR, 1.94 [95% CI, 1.34-2.80]). Adjustment for covariates and differential participation in relief programs did not entirely account for these disparities. Conclusions and Relevance: The results of this cohort study suggest that the COVID-19 crisis exacerbated preexisting inequities in food insecurity and difficulty paying rent according to race and ethnicity and maternal nativity and that equity-focused policy changes are needed to ensure that all children and their families in the US can afford basic needs for optimal health.

Type of Child Care Setting Is Associated With Child Care Constraints and Food Insecurity Among Families With Low-Incomes.

OBJECTIVE: High quality child care positively affects long-term development in children and is a necessary support for parents who work or are in school. We assessed the association between child care setting and parents' report of difficulties with ability to work and/or further their education ("child care constraints") or material hardships among families with low incomes. METHODS: Cross-sectional data were analyzed from families in Minneapolis, MN with children aged six weeks to 48 months in child care from 2004 to 2017. Associations between child care setting (formal, informal relative, informal non-relative) and child care constraints or material hardships (household/child food insecurity, housing instability, energy instability) were examined. RESULTS: Among 1580 families, 73.8% used informal care. Child care subsidy and public assistance program participation were higher among families utilizing formal care. Compared to formal care, families using informal relative or non-relative care had 2.44 and 4.18 greater adjusted odds of child care constraints, respectively. Families with children in informal non-relative care had 1.51 greater adjusted odds of household food insecurity. There were no statistically significant associations between informal relative care and household or child food insecurity, and no associations between child care setting and housing instability or energy insecurity. CONCLUSIONS: Informal care settings-relative and non-relative-were associated with child care constraints, and informal non-relative care with household food insecurity. Investment to expand equitable access to affordable, high-quality child care is necessary to enable parents to pursue desired employment and education and reduce food insecurity.

Critical windows of susceptibility for the effects of prenatal exposure to heat and heat variability on gestational growth.

BACKGROUND: Studies have shown that prenatal heat exposure may impact fetal growth, but few studies have examined the critical windows of susceptibility. As extreme heat events and within season temperature variability is expected to increase in frequency, it is important to understand how this may impact gestational growth. OBJECTIVES: We investigated associations between various measures of weekly prenatal heat exposure (mean and standard deviation (SD) of temperature and heat index (HI), derived using temperature in °C and dew point) and term birthweight or odds of being born small for gestational age (SGA) to identify critical windows of susceptibility. METHODS: We analyzed data from mother-child dyads (n = 4442) in the Boston-based Children's HealthWatch cohort. Birthweights were collected from survey data and electronic health records. Daily temperature and HI values were obtained from 800 m gridded spatial climate datasets aggregated by the PRISM Climate Group. Distributed lag-nonlinear models were used to assess the effect of the four weekly heat metrics on measures of gestational growth (birthweight, SGA, and birthweight z-scores). Analyses were stratified by child sex and maternal homelessness status during pregnancy. RESULTS: HI variability was significantly associated with decreased term birthweight during gestational weeks 10-29 and with SGA for weeks 9-26. Cumulative effects for these time periods were -287.4 g (95% CI: -474.1 g, -100.8 g for birthweight and 4.7 (95% CI: 1.6, 14.1) for SGA. Temperature variability was also significantly associated with decreased birthweight between weeks 15 and 26. The effects for mean heat measures on term birthweight and SGA were not significant for any gestational week. Stratification by sex revealed a significant effect on term birthweight in females between weeks 23-28 and in males between weeks 9-26. Strongest effects of HI variability on term birthweight were found in children of mothers who experienced homelessness during pregnancy. Weekly HI variability was the heat metric most strongly associated with measures of gestational growth. The effects observed were largest in males and those who experienced homelessness during pregnancy. DISCUSSION: Given the impact of heat variability on birthweight and risk of SGA, it is important for future heat warnings to incorporate measure of heat index and temperature variability.

Changes in Economic Hardships Arising During the COVID-19 Pandemic: Differences by Nativity and Race.

Hardships in early childhood impact health. Few longitudinal studies have examined pandemic-related hardships among families with young children by race/ethnicity or nativity. We used prospective longitudinal data from 1,165 caregivers of children < 4 years surveyed in English and Spanish face-to-face in 5 urban hospitals 1/2018 to 3/2020 (pre-pandemic) and again by telephone 9/2020 to 3/2021 (during pandemic). Caregivers reported hardships (household food insecurity [HFI], child food insecurity [CFI]), behind on rent [BOR]) and maternal race/ethnicity and nativity. During the pandemic vs pre-pandemic, families with immigrant mothers had greater increases in HFI [aOR = 2.15 (CI 1.49-3.09)] than families with US-born mothers [aOR = 1.44 (CI 1.09-1.90)] and greater increases in BOR [families with immigrant mothers aOR = 4.09 (CI 2.78-6.01) vs. families with US-born mothers aOR = 2.19 (CI 1.68-2.85)]. CFI increases for all groups did not vary by nativity nor race/ethnicity. HFI and BOR increases during COVID were significantly greater in families with Latina mothers and those with immigrant mothers than other groups.

Reduced health care utilization among young children of immigrants after Donald Trump's election and proposed public charge rule.

Widespread fear among immigrants from hostile 2016 presidential campaign rhetoric decreased social and health care service enrollment (chilling effect). Health care utilization effects among immigrant families with young children are unknown. We examined whether former President Trump's election had chilling effects on well-child visit (WCV) schedule adherence, hospitalizations, and emergency department (ED) visits among children of immigrant vs US-born mothers in 3 US cities. Cross-sectional surveys of children <4 years receiving care in hospitals were linked to 2015-2018 electronic health records. We applied difference-in-difference analysis with a 12-month pre/post-election study period. Trump's election was associated with a 5-percentage-point decrease (-0.05; 95% CI: -0.08, -0.02) in WCV adherence for children of immigrant vs US-born mothers with no difference in hospitalizations or ED visits. Secondary analyses extending the treatment period to a leaked draft of proposed changes to public charge rules also showed significantly decreased WCV adherence among children of immigrant vs US-born mothers. Findings indicate likely missed opportunities for American Academy of Pediatrics-recommended early childhood vaccinations, health and developmental screenings, and family support. Policies and rhetoric promoting immigrant inclusion create a more just and equitable society for all US children.

Association of the Expiration of Child Tax Credit Advance Payments With Food Insufficiency in US Households.

Importance: Advance Child Tax Credit (CTC) monthly payments administered to more than 35 million households with children in the US between July and December 2021 were associated with a substantial decrease in food insufficiency. These monthly payments expired in January 2022 after Congress failed to extend the policy, and the subsequent impact on food insufficiency is currently unknown. Objective: To assess whether the expiration of monthly CTC payments in January 2022 was associated with changes in food insufficiency in US households with children. Design, Setting, and Participants: This study used repeated cross-sectional, nationally representative data from multiple waves of the Household Pulse Survey, conducted by the US Census Bureau. Online data collection occurred from July 21, 2021, to July 11, 2022, and data analysis was performed in July 2022. Exposures: The first missed advance CTC payment on January 15, 2022. Main Outcomes and Measures: The main outcome was unadjusted prevalence of household food insufficiency. Event study specification was used to estimate the association between the expiration of the CTC payments and household food insufficiency with the exposure of being in a household with children present. Results: The sample (592 044 respondents, representing households with and without children, for a weighted population size of 123 350 770 individuals) was majority female (362 286 individuals [51.3%]) and non-Hispanic White (425 497 individuals [62.2%]), and a plurality of respondents (248 828 [48.3%]) were aged 25 to 44 years at the time of the survey. During the survey wave just before CTC expiration (reference wave, December 29, 2021, to January 10, 2022), unadjusted household food insufficiency was 12.7% among households with children. In late January and early February 2022, following the first missed CTC monthly payment, 13.6% of households with children reported food insufficiency, increasing to 16.0% by late June and early July 2022. The event study specification estimated a 3.2 percentage point increase (95% CI, 1.4-5.0 percentage points; P < .001) in food insufficiency by the most recent wave available after the first missed CTC payment (June 29 to July 11, 2022) among households with children compared with the reference wave, a 25% increase. Conclusions and Relevance: The findings of this study suggest that there was an increase in food insufficiency among households with children after they stopped receiving monthly CTC payments. Given the well-documented associations between inability to afford food and poor health outcomes across the life span, Congress should consider swift action to reinstate this policy.

Eviction and Household Health and Hardships in Families With Very Young Children.

BACKGROUND: Families with versus without children are at greater eviction risk. Eviction is a perinatal, pediatric, and adult health concern. Most studies evaluate only formal evictions. METHODS: Using cross-sectional surveys of 26 441 caregiver or young child (<48 months) dyads from 2011 to 2019 in emergency departments (EDs) and primary care clinics, we investigated relationships of 5 year history of formal (court-involved) and informal (not court-involved) evictions with caregiver and child health, history of hospitalizations, hospital admission from the ED on the day of the interview, and housing-related and other material hardships. RESULTS: 3.9% of 26 441 caregivers reported 5 year eviction history (eviction), of which 57.0% were formal evictions. After controlling for covariates, we found associations were minimally different between formal versus informal evictions and were, therefore, combined. Compared to no evictions, evictions were associated with 1.43 (95% CI: 1.17-1.73), 1.55 (95% confidence interval [CI]: 1.32-1.82), and 1.24 (95% CI: 1.01-1.53) times greater odds of child fair or poor health, developmental risk, and hospital admission from the ED, respectively, as well as adverse caregiver and hardship outcomes. Adjusting separately for household income and for housing-related hardships in sensitivity analyses did not significantly alter results, although odds ratios were attenuated. Hospital admission from the ED was no longer significant. CONCLUSIONS: Demonstrated associations between eviction and health and hardships support broad initiatives, such as housing-specific policies, income-focused benefits, and social determinants of health screening and community connections in health care settings. Such multifaceted efforts may decrease formal and informal eviction incidence and mitigate potential harmful associations for very young children and their families.

Postnatal exposure to PM2.5 and weight trajectories in early childhood.

BACKGROUND: Inconsistent evidence has assessed the impact of air pollution exposure on children's growth trajectories. We investigated the role of 90-day average postnatal fine particulate matter (PM2.5) exposures by estimating the magnitude of effects at different ages, and the change in child weight trajectory by categories of exposure. METHODS: We obtained weight values from electronic health records at each hospital visit (males = 1859, females = 1601) from birth to 6 years old children recruited into the Boston-based Children's HealthWatch cohort (2009-2014). We applied mixed models, adjusting for individual and maternal confounders using (1) varying-coefficient models allowing for smooth non-linear interaction between age and PM2.5, (2) factor-smooth interaction between age and PM2.5 quartiles. Additionally, we stratified by sex and low birthweight (LBW) status (≤2500 g). RESULTS: Using varying-coefficient models, we found that PM2.5 significantly modified the association between age and weight in males, with a positive association in children younger than 3 years and a negative association afterwards. In boys, for each 10 µg/m3 increase in PM2.5 we found a 2.6% increase (95% confidence interval = 0.8, 4.6) in weight at 1 year of age and a -0.6% (95% confidence interval = -3.9, 2.9) at 5 years. We found similar but smaller changes in females, and no differences comparing growth trajectories across quartiles of PM2.5. Most of the effects were in LBW children and null for normal birthweight children. CONCLUSIONS: This study suggests that medium-term postnatal PM2.5 may modify weight trajectories nonlinearly in young children, and that LBW babies are more susceptible than normal-weight infants.

Prenatal WIC Is Associated with Increased Birth Weight of Infants Born in the United States with Immigrant Mothers.

BACKGROUND: The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) improves health outcomes for participating mothers and children. Recent immigration policy changes increased chilling effects on WIC access and utilization. Associations between WIC participation and neonatal outcomes among infants born to immigrant parents-23% of all births in the United States-are understudied. OBJECTIVE: Our aim was to examine relationships between prenatal participation in WIC and birth weight among infants of income-eligible immigrant mothers. DESIGN: The study design was repeat cross-sectional in-person surveys. PARTICIPANTS/SETTING: Participants were 9,083 immigrant mothers of publicly insured or uninsured US-born children younger than 48 months accessing emergency departments or primary care in Baltimore, MD; Boston, MA; Little Rock, AR; Minneapolis, MN; and Philadelphia, PA interviewed from 2007 through 2017. MAIN OUTCOME MEASURES: Outcomes were mean birth weight (in grams) and low birth weight (<2,500 g). STATISTICAL ANALYSES: Multivariable linear regression assessed associations between prenatal WIC participation and mean birth weight; multivariable logistic regression examined association between prenatal WIC participation and low birth weight. RESULTS: Most of the immigrant mothers (84.6%) reported prenatal WIC participation. Maternal ethnicities were as follows: 67.4% were Latina, 27.0% were Black non-Latina, 2.2% were White non-Latina, and 3.5% were other/multiple races non-Latina. Infants of prenatal WIC-participant immigrant mothers had higher adjusted mean birth weight (3,231.1 g vs 3,149.8 g; P < .001) and lower adjusted odds of low birth weight (adjusted odds ratio 0.79, 95% CI 0.65 to 0.97; P = .02) compared with infants of nonparticipants. Associations were similar among groups when stratified by mother's length of stay in United States. CONCLUSIONS: Prenatal WIC participation for income-eligible immigrant mothers is associated with healthier birth weights among infants born in the United States, including for those who arrived most recently.

The immigrant birthweight paradox in an urban cohort: Role of immigrant enclaves and ambient air pollution.

BACKGROUND: Foreign-born Black and Latina women on average have higher birthweight infants than their US-born counterparts, despite generally worse socioeconomic indicators and prenatal care access, i.e., "immigrant birthweight paradox" (IBP). Residence in immigrant enclaves and associated social-cultural and economic benefits may be drivers of IBP. Yet, enclaves have been found to have higher air pollution, a risk factor for lower birthweight. OBJECTIVE: We investigated the association of immigrant enclaves and children's birthweight accounting for prenatal ambient air pollution exposure. METHODS: In the Boston-based Children's HealthWatch cohort of mother-child dyads, we obtained birthweight-for-gestational-age z-scores (BWGAZ) for US-born births, 2006-2015. We developed an immigrant enclave score based on census-tract percentages of foreign-born, non-citizen, and linguistically-isolated households statewide. We estimated trimester-specific PM2.5 concentrations and proximity to major roads based residential address at birth. We fit multivariable linear regressions of BWGAZ and examined effect modification by maternal nativity. Analyses were restricted to nonsmoking women and term births. RESULTS: Foreign-born women had children with 0.176 (95% CI: 0.092, 0.261) higher BWGAZ than US-born women, demonstrating the IBP in our cohort. Immigrant enclave score was not associated with BWGAZ, even after adjusting for air pollution exposures. However, this association was significantly modified by maternal nativity (pinteraction = 0.014), in which immigrant enclave score was positively associated with BWGAZ for only foreign-born women (0.090, 95% CI: 0.007, 0.172). Proximity to major roads was negatively associated with BWGAZ (-0.018 per 10 m, 95% CI: -0.032, -0.003) and positively correlated with immigrant enclave scores. Trimester-specific PM2.5 concentrations were not associated with BWGAZ. SIGNIFICANCE: Residence in immigrant enclaves was associated with higher birthweight children for foreign-born women, supporting the role of immigrant enclaves in the IBP. Future research of the IBP should account for immigrant enclaves and assess their spatial correlation with potential environmental risk factors and protective resources.

Association of the Implementation of Child Tax Credit Advance Payments With Food Insufficiency in US Households.

Importance: A key component of the American Rescue Plan Act of 2021 included an expansion of the Child Tax Credit with advance payments beginning in July 2021, a "child allowance" that was projected to dramatically reduce child poverty. Food insufficiency has increased markedly during the economic crisis spurred by the COVID-19 pandemic, with disparities among marginalized populations, and may be associated with substantial health care and social costs. Objective: To assess whether the introduction of advance payments for the Child Tax Credit in mid-July 2021 was associated with changes in food insufficiency in US households with children. Design, Setting, and Participants: This cross-sectional study used data from several phases of the Household Pulse Survey, conducted by the US Census Bureau from January 6 to August 2, 2021. The survey had 585 170 responses, representing a weighted population size of 77 165 153 households. Exposure: The first advance Child Tax Credit payment, received on July 15, 2021. Main Outcomes and Measures: Household food insufficiency. Results: The weighted sample of 585 170 respondents was mostly female (51.5%) and non-Hispanic White (62.5%), with a plurality aged 25 to 44 years (48.1%), having a 4-year degree or more (34.7%) and a 2019 household income of $75 000 to $149 999 (23.1%). In the weeks after the first advance payment of the Child Tax Credit was made (July 21 to August 2, 2021), 62.4% of households with children reported receiving it compared with 1.1% of households without children present (P < .001). There was a 3.7-percentage point reduction (95% CI, -0.055 to -0.019 percentage points; P < .001) in household food insufficiency for households with children present in the survey wave after the first advance payment of the Child Tax Credit, corresponding to a 25.9% reduction, using an event study specification. Difference-in-differences (-16.4%) and modified Poisson (-20.8%) models also yielded large estimates for reductions in household food insufficiency associated with the first advance payment of the expanded Child Tax Credit. Conclusions and Relevance: This study suggests that the Child Tax Credit advance payment increased household income and may have acted as a buffer against food insufficiency. However, its expansion and advance payment are only a temporary measure for 2021. Congress must consider whether to extend these changes or make them permanent and improve implementation to reduce barriers to receipt for low-income families.

Screening Discordance and Characteristics of Patients With Housing-Related Social Risks.

INTRODUCTION: Healthcare systems are increasingly interested in identifying patients' housing-related risks, but minimal information exists to inform screening question selection. The primary study aim is to evaluate discordance among 5 housing-related screening questions used in health care. METHODS: This was a cross-sectional multisite survey of social risks used in a convenience sample of adults seeking care for themselves or their child at 7 primary care clinics and 4 emergency departments across 9 states (2018-2019). Housing-related risks were measured using 2 questions from the Accountable Health Communities screening tool (current/anticipated housing instability, current housing quality problems) and 3 from the Children's HealthWatch recommended housing instability screening measures (prior 12-month: rent/mortgage strain, number of moves, current/recent homelessness). The 2-sided Fisher's exact tests analyzed housing-related risks and participant characteristics; logistic regression explored associations with reported health (2019-2020). RESULTS: Of 835 participants, 52% screened positive for ≥1 housing-related risk (n=430). Comparing the tools, 32.8% (n=274) screened discordant: 11.9% (n=99) screened positive by Children's HealthWatch questions but negative by Accountable Health Communities, and 21.0% (n=175) screened positive by the Accountable Health Communities tool but negative by Children's HealthWatch (p<0.001). Worse health was associated with screening positive for current/anticipated housing instability (AOR=0.56, 95% CI=0.32, 0.96) or current/recent homelessness (AOR=0.57, 95% CI=0.34, 0.96). CONCLUSIONS: The 5 housing questions captured different housing-related risks, contributed to different health consequences, and were relevant to different subpopulations. Before implementing housing-related screening initiatives, health systems should understand how specific measures surface distinct housing-related barriers. Measure selection should depend on program goals and intervention resources.