The Association between Psychosocial Stressors and Gestational Weight Gain: Analysis of the National Pregnancy Risk Assessment Monitoring System (PRAMS) Results from 2012 to 2015.

OBJECTIVE: Both psychosocial stress and gestational weight gain are independently associated with adverse maternal and fetal outcomes. Studies of the association between psychosocial stress and gestational weight gain (GWG) have yielded mixed results. The objective of this study was to evaluate the association between psychosocial stress and GWG in a large population-based cohort. METHODS: Data from the nationally representative Pregnancy Risk Assessment Monitoring System (PRAMS) Phase 7 questionnaire 2012-2015 was utilized. Maternal psychosocial stress was assessed through response to questions designed to examine four domains of psychosocial stress (i.e., traumatic, financial, emotional, partner-related) three months prior to or during pregnancy. GWG was categorized using pre-pregnancy BMI and total GWG into inadequate, adequate, or excessive according to the Institute of Medicine's GWG guidelines. Multinomial logistic regression was used to evaluate the association between psychosocial stressors and adequacy of GWG. Analyses took into account complex survey design. RESULTS: All respondents who delivered ≥ 37 weeks gestation with GWG information available were included in the analysis (n = 119,183). After adjusting for confounders, patients who reported financial stress were more likely to experience excessive versus adequate GWG (RRR 1.09 [95%CI: 1.02-1.17]). Exposure to any of the stressor groups did not significantly increase the risk of inadequate GWG. CONCLUSIONS: This large, population-based study revealed that among pregnant people in the US, exposure to financial stress is associated with higher risk of excessive GWG. Understanding the role stress plays in GWG will help to inform initiatives targeting this important aspect of prenatal care.

State-specific fertility rate changes across the USA following the first two waves of COVID-19.

STUDY QUESTION: How did the first two coronavirus disease 2019 (COVID-19) waves affect fertility rates in the USA? SUMMARY ANSWER: States differed widely in how their fertility rates changed following the COVID-19 outbreak and these changes were influenced more by state-level economic, racial, political, and social factors than by COVID-19 wave severity. WHAT IS KNOWN ALREADY: The outbreak of the COVID-19 pandemic contributed to already declining fertility rates in the USA, but not equally across states. Identifying drivers of differential changes in fertility rates can help explain variations in demographic shifts across states in the USA and motivate policies that support families in general, not only during crises. STUDY DESIGN, SIZE, DURATION: This is an ecological study using state-level data from 50 US states and the District of Columbia (n = 51). The study period extends from 2020 to 2021 with historical data from 2016 to 2019. We identified Wave 1 as the first apex for each state after February 2020 and Wave 2 as the second apex, during Fall/Winter 2020-2021. PARTICIPANTS/MATERIALS, SETTING, METHODS: State-level COVID-19 wave severity, defined as case acceleration during each 3-month COVID-19 wave (cases/100 000 population/month), was derived from 7-day weekly moving average COVID-19 case rates from the US Centers for Disease Control and Prevention (CDC). State-level fertility rate changes (change in average monthly fertility rate/100 000 women of reproductive age (WRA)/year) were derived from the CDC Bureau of Vital Statistics and from 2020 US Census and University of Virginia 2021 population estimates 9 months after each COVID-19 wave. We performed univariate analyses to describe national and state-level fertility rate changes following each wave, and simple and multivariable linear regression analyses to assess the relation of COVID-19 wave severity and other state-level characteristics with fertility rate changes. MAIN RESULTS AND THE ROLE OF CHANCE: Nationwide, fertility dropped by 17.5 births/month/100 000 WRA/year following Wave 1 and 9.2 births/month/100 000 WRA/year following Wave 2. The declines following Wave 1 were largest among majority-Democrat, more non-White states where people practiced greater social distancing. Greater COVID-19 wave severity was associated with steeper fertility rate decline post-Wave 1 in simple regression, but the association was attenuated when adjusted for other covariates. Adjusting for the economic impact of the pandemic (hypothesized mediator) also attenuated the effect. There was no relation between COVID-19 wave severity and fertility rate change following Wave 2. LIMITATIONS, REASONS FOR CAUTION: Our study harnesses state-level data so individual-level conclusions cannot be inferred. There may be residual confounding in our multivariable regression and we were underpowered to detect some effects. WIDER IMPLICATIONS OF THE FINDINGS: The COVID-19 pandemic initially impacted the national fertility rate but, overall, the fertility rate rebounded to the pre-pandemic level following Wave 2. Consistent with prior literature, COVID-19 wave severity did not appear to predict fertility rate change. Economic, racial, political, and social factors influenced state-specific fertility rates during the pandemic more than the severity of the outbreak alone. Future studies in other countries should also consider whether these factors account for internal heterogeneity when examining the impact of the COVID-19 pandemic and other crises on fertility. STUDY FUNDING/COMPETING INTEREST(S): L.G.K. received funding from the National Institute of Environmental Health Sciences (R00ES030403), M.C. from the National Science Foundation Graduate Research Fellowship Program (20-A0-00-1005789), and M.L. and E.S. from the National Institute of Environmental Health Sciences (R01ES032808). None of the authors have competing interests. TRIAL REGISTRATION NUMBER: N/A.

Prenatal phthalate exposure and fetal penile length and width.

BACKGROUND: Phthalates are endocrine-disrupting chemicals with anti-androgenic qualities and studies reported associations between prenatal phthalate exposure and infant genitalia. This study investigated whether increased prenatal phthalate exposure is associated with decreased fetal penile measures. METHODS: Data was from the New York University Children's Health and Environment Study (2016-2019). Maternal urinary concentrations of 16 phthalate metabolites were quantified at <18 weeks gestation as a proxy for fetal exposure (n = 334 male pregnancies). We retrospectively measured penile length and width using ultrasounds conducted 18-24 weeks gestation (n = 173 fetuses). Associations of maternal urinary levels of phthalates with fetal penile length and width were determined using linear regression models. RESULTS: 57.2% of women were Hispanic, 31.8% Non-Hispanic White, 6.4% Asian, 2.3% Non-Hispanic Black, and 2.3% multiple races. Mean maternal age was 32 years (standard deviation [SD] = 5.7). Mean penile length was 7.13 mm (SD = 1.47) and width was 6.16 mm (SD = 0.87). An inverse relationship was observed between maternal levels of mono-ethyl phthalate and fetal penile length, and mono-(7-carboxy-n-heptyl) phthalate and penile width, though estimates were small and not significant when considering correction for multiple comparisons. CONCLUSIONS: In our cohort we found no clinically meaningful associations between early pregnancy phthalate exposure and fetal penile length or width. IMPACT: First-trimester phthalate metabolites were assessed in pregnant women in New York City. Penile length and width were retrospectively measured on clinically assessed ultrasounds conducted ≥18 weeks and <24 weeks of gestation. In this cohort, no clinically meaningful associations were observed between first-trimester prenatal phthalate exposure and fetal penile length. This study contributes to the limited but growing research on the impact of prenatal phthalate exposure on male fetal genital development. The results emphasize that there may not be a clear association between prenatal phthalate exposure and fetal penile length and width, and further research on this topic may be required.

Risk Assessment Model for Postpartum Venous Thromboembolism Prevention in Patients with Systemic Lupus Erythematosus.

OBJECTIVE: This article assesses the application of the Royal College of Obstetricians and Gynaecologists (RCOG) venous thromboembolism (VTE) risk model on a cohort of postpartum patients with a history of systemic lupus erythematosus (SLE). STUDY DESIGN: This is a secondary analysis of an ongoing patient registry of women with SLE from 2016 to 2022. There were 49 SLE patients with 55 pregnancies using the Definitions of Remission in SLE (DORIS) criteria to determine SLE disease activity. RCOG risk assessment model scoring was calculated for each patient prior to and after delivery. The primary outcome was the qualification of "active SLE" by standard rheumatologic criteria and assessment of recommendations for VTE prophylaxis based on RCOG VTE risk assessment scoring. Data were analyzed using Fisher's exact test, chi-square test, and Mann-Whitney U test with significance defined as p < 0.05. RESULTS: In the study cohort, 34 pregnancies (61.8%) were in DORIS remission at delivery. Twenty-one pregnancies (38.2%) were not and scored 3 points on the RCOG VTE risk model. Of these pregnancies, only 19% (n = 4) were recommended for VTE prophylaxis by the obstetrical provider despite RCOG score ≥3. Only 35.7% (n = 5) of pregnancies in DORIS remission, but with 3 points for non-SLE-related VTE risk factors (n = 14), were recommended for VTE prophylaxis. Of the 20 pregnancies in remission with an RCOG score < 3 after assessing all risk factors, 15% (n = 3) were nevertheless recommended for VTE prophylaxis. No patients had a postpartum VTE regardless of therapy. CONCLUSION: These data reveal a need to improve upon providing postpartum VTE prophylaxis to SLE patients not in remission while also recognizing a diagnosis of SLE alone should not equate with active disease. Moreover, SLE patients in remission may still warrant VTE prophylaxis if other non-SLE-related risk factors are present. KEY POINTS: · Those with SLE are at increased risk for VTE postpartum.. · VTE prophylaxis should be instituted when clinically appropriate.. · Caution should be exercised in broadly assigning disease activity for SLE diagnosis only.. · This study supports VTE prophylaxis use in postpartum patients with SLE..

Comparing outcomes of fetal growth restriction defined by estimated fetal weight versus isolated abdominal circumference.

PURPOSE: The objective of this study was to compare maternal and neonatal outcomes when the diagnosis of FGR was based on isolated abdominal circumference < 10th percentile for gestational age (GA) (iAC group) versus overall estimated fetal weight < 10th percentile (EFW group). METHODS: This was a retrospective cohort study of singleton gestations who underwent growth ultrasounds and delivered at a single health system from 1/1/19-9/4/20. The study group was comprised of patients with AC < 10th percentile and EFW ≥ than the 10th percentile (iAC group). The control group included patients with overall EFW < 10th percentile (EFW group). Outcomes evaluated included GA at delivery, mode of delivery, fetal and neonatal outcomes. Data was analyzed using Mann Whitney U, X2, and Fisher exact tests with significance defined as p < 0.05. RESULTS: 635 women met the inclusion criteria, 259 women in the iAC group and 376 women in the EFW group. The iAC group was noted to have a later GA at diagnosis and delivery. iAC was associated with lower rates of preterm birth (PTB), NICU admission, SGA at delivery and umbilical artery cord gas < 7.0. CONCLUSION: Using iAC as a definition of FGR increased the number of FGR cases by 1.69-fold over EFW criteria alone. However, obstetrical and neonatal outcomes for the iAC group appear to be significantly better than those in the EFW group, with low rates of PTB, NICU admission, and umbilical artery cord gas < 7.0.

The Effect of Maternal US Nativity on Racial/Ethnic Differences in Fetal Growth.

While racial/ethnic differences in fetal growth have been documented, few studies have examined whether they vary by exogenous factors, which could elucidate underlying causes. The purpose of this study was to characterize longitudinal fetal growth patterns by maternal sociodemographic, behavioral, and clinical factors and examine whether associations with maternal race/ethnicity varied by these other predictors. Between 2016 and 2019, pregnant women receiving prenatal care at NYU Langone Health (New York, New York) were invited to participate in a birth cohort study. Women completed questionnaires, and clinical data were abstracted from ultrasound examinations. Maternal characteristics were assessed in relation to fetal biometric measures throughout pregnancy using linear mixed models. Maternal race/ethnicity was consistently associated with fetal biometry: Black, Hispanic, and Asian women had fetuses with smaller head circumference, abdominal circumference, and biparietal diameter than White women. The associations between race/ethnicity and fetal growth varied by nativity for Asian women, such that the disparity between Asian and White women was much greater for US-born women than for foreign-born women. However, associations for Black and Hispanic women did not vary by nativity. While race/ethnicity-specific fetal growth standards have been proposed, additional work is needed to elucidate what could be driving these differences, including factors that occur in parallel and differentially affect fetal growth.

Longitudinal associations of pre-pregnancy BMI and gestational weight gain with maternal urinary metabolites: an NYU CHES study.

BACKGROUND/OBJECTIVES: Excessive gestational weight gain (GWG) and pre-pregnancy obesity affect a significant portion of the US pregnant population and are linked with negative maternal and child health outcomes. The objective of this study was to explore associations of pre-pregnancy body mass index (pBMI) and GWG with longitudinally measured maternal urinary metabolites throughout pregnancy. SUBJECTS/METHODS: Among 652 participants in the New York University Children's Health and Environment Study, a longitudinal pregnancy cohort, targeted metabolomics were measured in serially collected urine samples throughout pregnancy. Metabolites were measured at median 10 (T1), 21 (T2), and 29 (T3) weeks gestation using the Biocrates AbsoluteIDQ® p180 Urine Extension kit. Acylcarnitine, amino acid, biogenic amine, phosphatidylcholine, lysophosphatidylcholine, sphingolipid, and sugar levels were quantified. Pregnant people 18 years or older, without type 1 or 2 diabetes and with singleton live births and valid pBMI and metabolomics data were included. GWG and pBMI were calculated using weight and height data obtained from electronic health records. Linear mixed effects models with interactions with time were fit to determine the gestational age-specific associations of categorical pBMI and continuous interval-specific GWG with urinary metabolites. All analyses were corrected for false discovery rate. RESULTS: Participants with obesity had lower long-chain acylcarnitine levels throughout pregnancy and lower phosphatidylcholine and glucogenic amino acids and higher phenylethylamine concentrations in T2 and T3 compared with participants with normal/underweight pBMI. GWG was associated with taurine in T2 and T3 and C5 acylcarnitine species, C5:1, C5-DC, and C5-M-DC, in T2. CONCLUSIONS: pBMI and GWG were associated with the metabolic environment of pregnant individuals, particularly in relation to mid-pregnancy. These results highlight the importance of both preconception and prenatal maternal health.

Differential Uptake of Telehealth for Prenatal Care in a Large New York City Academic Obstetrical Practice during the COVID-19 Pandemic.

During the coronavirus disease 2019 (COVID-19) pandemic in New York City, telehealth was rapidly implemented for obstetric patients. Though telehealth for prenatal care is safe and effective, significant concerns exist regarding equity in access among low-income populations. We performed a retrospective cohort study evaluating utilization of telehealth for prenatal care in a large academic practice in New York City, comparing women with public and private insurance. We found that patients with public insurance were less likely to have at least one telehealth visit than women with private insurance (60.9 vs. 87.3%, p < 0.001). After stratifying by borough, this difference remained significant in Brooklyn, one of the boroughs hardest hit by the pandemic. As COVID-19 continues to spread around the country, obstetric providers must work to ensure that all patients, particularly those with public insurance, have equal access to telehealth. KEY POINTS: · Telehealth for prenatal care is frequently utilized during the COVID-19 pandemic.. · Significant concerns exist regarding equity in access among lower-income populations.. · Women with public insurance in New York City were less likely to access telehealth for prenatal care..

A review of fetal and neonatal consequences of maternal systemic lupus erythematosus.

Systemic lupus erythematosus (SLE) primarily affects women of childbearing age and is commonly seen in pregnancy. The physiologic and immunologic changes of pregnancy may alter the course of SLE and impact maternal, fetal, and neonatal health. Multidisciplinary counseling before and during pregnancy from rheumatology, maternal fetal medicine, obstetrics, and pediatric cardiology is critical. Transplacental passage of autoantibodies, present in about 40% of women with SLE, can result in neonatal lupus (NL). NL can consist of usually permanent cardiac manifestations, including conduction system and myocardial disease, as well as transient cutaneous, hematologic, and hepatic manifestations. Additionally, women with SLE are more likely to develop adverse pregnancy outcomes such as preeclampsia, fetal growth restriction, and preterm birth, perhaps due to an underlying effect on placentation. This review describes the impact of SLE on maternal and fetal health by trimester, beginning with prepregnancy optimization of maternal health. This is followed by a discussion of NL and the current understanding of the epidemiology and pathophysiology of anti-Ro/La mediated cardiac disease, as well as screening, treatment, and methods for prevention. Finally discussed is the known increase in preeclampsia and fetal growth issues in women with SLE that can lead to iatrogenic preterm delivery.

A Preconception Nomogram to Predict Preterm Delivery.

Objective Preterm birth is a leading cause of perinatal morbidity and mortality. Prevention strategies rarely focus on preconception care. We sought to create a preconception nomogram that identifies nonpregnant women at highest risk for preterm birth using the Pregnancy Risk Assessment Monitoring System (PRAMS) surveillance data. Methods We used PRAMS data from 2004 to 2009. The odds ratios (ORs) of preterm birth for each preconception variable was estimated and adjusted analyses were conducted. We created a validated nomogram predicting the probability of preterm birth using multivariate logistic regression coefficients. Results 192,208 cases met inclusion criteria. Demographic/maternal health characteristics and associations with preterm birth and ORs are reported. After validation, we identified the following significant predictors of preterm birth: prior history of preterm birth or low birth weight baby, prior spontaneous or elective abortion, maternal diabetes prior to conception, maternal race (e.g., non-Hispanic black), intention to get pregnant prior to conception (i.e., did not want or wanted it sooner), and smoking prior to conception (p < 0.05). Overall, our preconception preterm risk model correctly classified 76.1 % of preterm cases with a negative predictive value (NPV) of 76.7 %. A nomogram using a 0-100 scale illustrates our final preconception model for predicting preterm birth. Conclusion This preconception nomogram can be used by clinicians in multiple settings as a tool to help predict a woman's individual preterm birth risk and to triage high-risk non-pregnant women to preconception care. Future studies are needed to validate the nomogram in a clinical setting.

The impact of antenatal testing for advanced maternal age on cesarean delivery rate at an urban institution.

OBJECTIVE: Antenatal testing has been implemented for advanced maternal age (AMA) women given their increased stillbirth risk. Our objective was to evaluate cesarean delivery and induction rates after the start of antenatal testing at our institution. STUDY DESIGN: A retrospective cohort study of AMA women (≥ 40 years) who delivered at our institution was performed. Testing for AMA began in 2005. AMA women who delivered before (unexposed) and after (exposed) the implementation were compared. Our primary outcome was cesarean delivery and secondary outcome was induction. Chi-square compared categorical variables and multivariable logistic regression calculated odds ratio (OR) and controlled for confounders. RESULTS: A total of 276 women were included (147 unexposed and 129 exposed). The cesarean rate was higher in the exposed group (53 vs. 39%, OR 1.76 [1.09-2.84]). The increased risk of cesarean remained after adjusting for race, previous cesarean, multiple gestations, and parity (adjusted OR 1.85 [1.05-3.28]). When excluding those with previous cesareans, the risk of primary cesarean was not significant (OR 1.57 [0.89-2.76]). The induction rate was not different (38 vs. 33%, p = 0.4). CONCLUSIONS: While overall cesareans increased, there was no difference in primary cesarean and induction rates for AMA women after implementation of antenatal testing for AMA.

Evaluating associations of bisphenol and phthalate exposure with time to pregnancy and subfecundity in a New York City pregnancy cohort.

It is important to understand the impact of consumer chemical exposure and fecundity, a couple's measure of probability of successful conception, given approximately 15% of couples experience infertility. Prior research has generally found null associations between bisphenol and phthalate exposure and fecundability, measured via time to pregnancy (TTP). However, this research has not been updated with current chemical exposures and have often lacked diversity in their study populations. We evaluated the associations between common bisphenol and phthalate chemical exposure groups and TTP as well as subfecundity (TTP>12 months) in the New York University Children's Health Study, a diverse pregnancy cohort from 2016 onward. Using first-trimester spot-urine samples to measure chemical exposure and self-reported TTP from first-trimester questionnaires, we observed a significant adverse association between total bisphenol exposure and certain phthalate groups on TTP and odds of subfecundity. Furthermore, in a mixtures analysis to explore the joint effects of the chemical groups on the outcomes, we found evidence of a potential interaction between total bisphenol exposure and low-molecular weight phthalates on TTP. Future research should continue to update our knowledge regarding the complex and potentially interacting effects of these chemicals on reproductive health.

Perception of weight status and its impact on gestational weight gain in an urban population.

To examine the association between actual and perceived overweight/obese status and excess gestational weight gain (GWG). As part of an infant feeding trial, multi-ethnic lower and moderate income women-completed a checklist of current health conditions, including "overweight/obesity," "asthma," and "hypertension" while pregnant. Odds of excessive GWG per the Institute of Medicine guidelines in 'accurate' versus 'inaccurate' reporters, by overweight status were analyzed with multivariate logistic regression for women with pre-or early pregnancy BMIs of ≥18.5. 775 women met study criteria. Just 21 % (n = 107) of overweight/obese women accurately identified their weight status, compared to >90 % accurate report of documented hypertension or asthma. Compared to normal-weight accurate reporters, the adjusted odds of excessive GWG in overweight/obese women was 2.3 (95 % CI 1.4, 3.7) in accurate reporters, and 2.5 (95 % CI 1.7, 3.4) in inaccurate reporters. Overweight/obesity is associated with excessive GWG, but this risk is not modified by inaccurate reporting/perception of weight-status.

Maternal urinary bisphenols and phthalates in relation to estimated fetal weight across mid to late pregnancy.

BACKGROUND: Bisphenols and phthalates are high production volume chemicals used as additives in a variety of plastic consumer products leading to near ubiquitous human exposure. These chemicals have established endocrine disrupting properties and have been linked to a range of adverse reproductive and developmental outcomes. Here, we investigated exposure in relation to fetal growth. METHODS: Participants included 855 mother-fetal pairs enrolled in the population-based New York University Children's Health and Environment Study (NYU CHES). Bisphenols and phthalates were measured in maternal urine collected repeatedly during pregnancy. Analyses included 15 phthalate metabolites and 2 bisphenols that were detected in 50 % of participants or more. Fetal biometry data were extracted from electronic ultrasonography records and estimated fetal weight (EFW) was predicted for all fetuses at 20, 30, and 36 weeks gestation. We used quantile regression adjusted for covariates to model exposure-outcome relations across percentiles of fetal weight at each gestational timepoint. We examined sex differences using stratified models. RESULTS: Few statistically significant associations were observed across chemicals, gestational time periods, percentiles, and sexes. However, within gestational timepoints, we found that among females, the molar sums of the phthalates DiNP and DnOP were generally associated with decreases in EFW among smaller babies and increases in EFW among larger babies. Among males, the opposite trend was observed. However, confidence intervals were generally wide at the tails of the distribution. CONCLUSION: In this sample, exposure to bisphenols and phthalates was associated with small sex-specific shifts in fetal growth; however, few associations were observed at the median of fetal weight and confidence intervals in the tails were wide. Findings were strongest for DiNP and DnOP, which are increasingly used as replacements for DEHP, supporting the need for future research on these contaminants.

Chronotype and sleep duration interact to influence time to pregnancy: Results from a New York City cohort.

STUDY OBJECTIVE: To study associations between nighttime sleep characteristics and time to pregnancy. METHODS: Pregnant people age ≥18 years and<18 weeks' gestation were recruited from 3 New York University Grossman School of Medicine affiliated hospitals in Manhattan and Brooklyn (n = 1428) and enrolled into the New York University Children's Health and Environment Study. Participants in the first trimester of pregnancy were asked to recall their time to pregnancy and their sleep characteristics in the 3 months before conception. RESULTS: Participants who reported sleeping<7 hours per night tended to have shorter time to pregnancy than those who slept 7-9 hours per night (adjusted fecundability odds ratio = 1.16, 95% confidence interval: 0.94, 1.41). Participants with a sleep midpoint of 4 AM or later tended to have longer time to pregnancy compared with those with earlier sleep midpoints (before 4 AM) (adjusted fecundability odds ratio = 0.88, 95% confidence interval: 0.74, 1.04). When stratified by sleep midpoint, sleeping<7 hours was significantly associated with shorter time to pregnancy only among those whose sleep midpoint was before 4 AM (adjusted fecundability odds ratio = 1.33, 95% confidence interval: 1.07, 1.67). CONCLUSIONS: The association of sleep duration with time to pregnancy was modified by chronotype, suggesting that both biological and behavioral aspects of sleep may influence fecundability.

Maternal Cannabis Use in the Perinatal Period: Data From the Pregnancy Risk Assessment Monitoring System Marijuana Supplement, 2016-2018.

OBJECTIVE: To estimate the prevalence of perinatal cannabis use (ie, before and/or during pregnancy); document the frequency, modes, and motivations for use; and identify predictors of perinatal cannabis use. METHODS: Six states in the Pregnancy Risk Assessment Monitoring System, a state-specific, population-based surveillance system, administered a supplemental questionnaire on perinatal cannabis use in 2016-2018. Women with live births were surveyed 2-6 months postpartum about behaviors ≤ 3 months preconception and during pregnancy. Demographic, psychosocial, and behavioral characteristics were examined in relation to perinatal cannabis use using multinomial regression models. Those who: (1) never used cannabis, (2) only used in preconception period, and (3) used in both preconception and prenatal periods were compared. RESULTS: Among 6428 respondents, 379 (5.8%) used cannabis pre-conceptionally only and 466 (4.4%) used in both the preconception and prenatal periods. Among those using prenatally, most reported smoking as their single mode (87.1%), with the two most common reasons being stress (83.8%) and nausea/vomiting (79.2%). Marital status, race/ethnicity, socioeconomic status, parity, and cigarette and alcohol use were significantly associated with perinatal cannabis use. Single (vs partnered) women were more likely to use cannabis prenatally (odds ratio = 2.4, 95% confidence interval: 1.5, 3.9) and non-Hispanic Black (vs White) women were less likely to use prenatally (odds ratio = 0.4, 95% confidence interval: 0.2, 0.8). CONCLUSIONS: Using a population-based sample of US births in six states, several demographic, psychosocial, and behavioral characteristics were identified in relation to perinatal cannabis use. These data are valuable for counseling in prenatal care and investigations of health effects.

Maternal Perceived Stress During the COVID-19 Pandemic: Pre-Existing Risk Factors and Concurrent Correlates in New York City Women.

Objective: We examined whether pre-pandemic mental health and sociodemographic characteristics increased the susceptibility of pregnant women and mothers of young children to stress in the early months of the COVID-19 pandemic. Methods: Between April and August 2020, we surveyed 1560 women participating in a sociodemographically diverse birth cohort in New York City. Women reported their perceived stress, resiliency, and financial, familial/societal, and health-related concerns. We extracted pre-pandemic information from questionnaires and electronic health records. Results: Pre-pandemic history of depression, current financial difficulties, and COVID-19 infection were the main risk factors associated with high perceived stress. Being Hispanic and having higher resiliency scores and preexisting social support were protective against high perceived stress. Major contributors to current perceived stress were financial and familial/societal factors related to the COVID-19 pandemic. Among pregnant women, changes to prenatal care were common, as were changes to experiences following birth among postpartum women and difficulties in arranging childcare among mothers of young children. Conclusion: Our findings suggest that major risk factors of higher stress during the pandemic were similar to those of other major traumatic events.

Variability and correlations of synthetic chemicals in urine from a New York City-based cohort of pregnant women.

Fetal exposure to environmental chemicals has been associated with adverse health outcomes in children and later into adulthood. While several studies have examined correlations and variability of non-persistent chemical exposures throughout pregnancy, many do not capture more recent exposures, particularly in New York City. Our goal was to characterize exposure to phthalates, bisphenols, polycyclic aromatic hydrocarbons, and organophosphate pesticides among pregnant women residing in New York City who enrolled in the New York University Children's Health and Environment Study (NYU CHES) between 2016 and 2018. We measured urinary chemical metabolite concentrations in 671 women at early, mid, and late pregnancy (median 10.8, 20.8, and 29.3 weeks, respectively). We calculated Spearman correlation coefficients among chemical concentrations at each measurement time point. We compared changes in population-level urinary metabolites at each stage using paired Wilcoxon signed-rank tests and calculated intraclass correlation coefficients (ICCs) to quantify intra-individual variability of metabolites across pregnancy. Geometric means and ICCs were compared to nine other pregnancy cohorts that recruited women in 2011 or later as well as nationally reported levels from women of child-bearing age. Compared with existing cohorts, women in NYU CHES had higher geometric means of organophosphate pesticides (Σdiethylphosphates = 28.7 nmol/g cr, Σdimethylphosphates = 57.3 nmol/g cr, Σdialkyl phosphates = 95.9 nmol/g cr), bisphenol S (0.56 µg/g cr), and 2-naphthalene (8.98 µg/g cr). Five PAH metabolites and two phthalate metabolites increased between early to mid and early to late pregnancy at the population level. Spearman correlation coefficients for chemical metabolites were generally below 0.50. Intra-individual exposures varied over time, as indicated by low ICCs (0.22-0.88, median = 0.38). However, these ICCs were often higher than those observed in other pregnancy cohorts. These results provide a general overview of the chemical metabolites measured in NYU CHES in comparison to other contemporary pregnancy cohorts and highlight directions for future studies.

A modern measles outbreak: understanding maternal immunity and impact on postpartum vaccination uptake.

BACKGROUND: In October 2018, a measles (rubeola) outbreak was identified in New York City and Rockland County, and a public health campaign and hospital policy changes were made to increase awareness of the importance of vaccination and increase vaccination rates. OBJECTIVE: We describe the prevalence of rubeola immunity in pregnant women and the change in uptake of postpartum measles, mumps, and rubella vaccination before and during the measles outbreak. STUDY DESIGN: A multipronged intervention was developed by the health system with the intent of raising awareness of the outbreak, identifying patients at risk of contracting measles during pregnancy, and limiting exposure of inpatients to the disease. This was a quality improvement study to assess the impact of the intervention and public health policy on the rates of documentation of rubeola immunity and rubeola vaccination rates in nonimmune women. Women who delivered at New York University Langone Health before the outbreak July 1, 2016 to July 1, 2017 were compared with women who delivered during the outbreak July 1, 2018 to July 1, 2019. The primary outcome was acceptance of measles, mumps, and rubella vaccination in nonimmune women during the postpartum period. Analysis was conducted using logistic regression and chi-square tests, and alpha was set at 0.05. RESULTS: A total of 19,585 patients were analyzed; 9162 women delivered before the outbreak and 10,423 delivered during the outbreak. Of these, 2589 (13.2%) were documented as living in a high-risk zone improvement plan code, which were areas at the epicenter of the measles outbreak. Notably, 14,731 women (75.2%) were tested for rubeola immunity and 3270 of those tested (22.2%) were not immune. In the year of the outbreak, a higher proportion of women had rubeola immunity documented with serum titers than in the year before the outbreak (81% vs 69%; P<.001). Inpatient compliance with postpartum measles, mumps, and rubella administration was greater during the outbreak than before it (76% vs 59%; P<.001) for patients from both low-risk and high-risk zone improvement plan codes. CONCLUSION: The New York City and Rockland County measles outbreak, together with the implementation of a health system-wide education program and a change in public health policy, led to an increase in the proportion of pregnant women being screened for rubeola immunity. It also led to an increase in uptake of the immediate postpartum measles, mumps, and rubella vaccine.