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Introduction: Recent increases in maternal mortality and persistent disparities have led to speculation about why the U.S. has higher rates than most high-income countries. The aim was to examine the impact of changes in state-level factors plausibly linked to maternal mortality on overall rates and by race/ethnicity., Methods: This quasi-experimental, population-based, difference-in-differences study used 2007-2015 National Vital Statistics System microdata mortality files from 38 states and DC. The primary exposures were 5 state-level sexual and reproductive health indicators and 6 health and economic conditions. Maternal mortality rate was defined as number of deaths of women while pregnant or within 42 days of termination of pregnancy per 100,000 live births. A difference-in-differences zero-inflated negative binomial regression model was estimated using the race/ethnicity-age-state-year population as the denominator and adjusting for race/ethnicity, age, state, and year. Data were analyzed in 2017-2018., Results: There were 4,767 deaths among women up to age 44 years, resulting in a maternal mortality rate of 17.9. Reducing the proportion of Planned Parenthood clinics by 20% from the state-year mean increased the maternal mortality rate by 8% (incidence rate ratio, 1.08; 95% CI=1.04, 1.12). States that enacted legislation to restrict abortions based on gestational age increased the maternal mortality rate by 38% (incidence rate ratio, 1.38; 95% CI=1.03, 1.84). Planned Parenthood clinic closures negatively impacted all women, increasing mortality by 6%-15% across racial/ethnic groups, whereas gestational limits primarily increased mortality among white women., Conclusions: Recent fiscal and legislative changes reducing women's access to family planning and reproductive health services have contributed to rising maternal mortality rates., (Copyright © 2019 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.)

While research has demonstrated the effects of tobacco control policies on birth outcomes, there is little known about their impact on birth defects. Using 2005-2015 natality data on 26,334,854 singletons from 47 US states and District of Columbia linked to state-level cigarette taxes and smoke-free restaurant legislation, we examined the impact of tobacco control policies on birth defects by maternal race/ethnicity and education. We found that among white women with less than a high school degree, every $1.00 increase in cigarette taxes reduced prenatal smoking by 3.48 percentage points and reduced the risk of their infant having any birth defect by 0.0023 percentage points. Tax increases also reduced the risk of cyanotic heart defects, cleft palate, gastroschisis, and limb reduction. We found no evidence for associations between the enactment of smoke-free legislation, prenatal smoking and birth defects. Our findings suggest that state cigarette taxes are a population-level intervention that can help reduce prenatal smoking and the risk of birth defects., (Copyright © 2019. Published by Elsevier Inc.)

Objectives: Studies show disparities in maternal health behaviors according to acculturation, but whether paternal factors influence these patterns is unknown. We assessed the relationships between fathers' ethnicity and place of birth with maternal smoking during pregnancy and breastfeeding initiation overall and for 30 major ethnic groups., Materials and Methods: Data were from the Standard Certificate of Live Births on 1,053,096 births in Massachusetts between 1996 through 2010. We examined the concordance of maternal and paternal ethnicity and place of birth across three categories (United States-born white, United States-born Other ethnicity, and foreign-born), and then in relation to maternal smoking during pregnancy and breastfeeding initiation. Multivariable models adjusted for maternal age, marital status, education, plurality, parity, prenatal care, delivery source of payment, and year of birth., Results: United States-born white mothers were less likely to smoke during pregnancy (adjusted odds ratio [AOR] 0.66; 95% confidence interval [CI]: 0.60, 0.73) and more likely to initiate breastfeeding (AOR 1.56; 95% CI: 1.46, 1.66) if their partners were foreign-born. In contrast, foreign-born mothers whose partners were United States-born of Other ethnicity or United States-born white had a 1.65-5.12 higher odds of smoking during pregnancy and were 26%-41% less likely (AORs 0.59-0.74) to initiate breastfeeding than if their partners were also foreign-born. Results were consistent across most racial/ethnic groups., Conclusions: Our findings offer new insight into the social pathways by which acculturation impacts maternal health behaviors and add to growing evidence that fathers are valuable to maternal health. Future efforts to understand how acculturation results in poorer maternal health behaviors should account for paternal influences.

Background Sex of child has been shown to impact breastfeeding duration in India, Australia, Scandinavia, Latin America, and, within the US, in a sample in Eastern Connecticut and in a separate sample of Indian and Chinese immigrants. Objectives The objective of this study is to examine differences in breastfeeding initiation and duration by sex of child across racial/ethnic groups in the US. Methods We used the Pregnancy Risk Assessment Monitoring System 2009-2010 and logistic regression to examine whether sex of child impacts breastfeeding initiation and duration for at least 8 weeks by women's racial/ethnic group. Results Among the 66,107 women in our sample representing 12 different race/ethnic groups, Hispanic women (n = 9049) had lower odds of breastfeeding initiation (adjusted odds ratio [AOR] = 0.81, 95% CI 0.71-0.93) and breastfeeding duration (AOR = .87, 95% CI 0.80-0.96) if they have sons compared to Hispanic women who have daughters. Sex of child did not impact the odds of breastfeeding initiation or duration among any other race/ethnic group. Conclusion We have shown that, for Hispanics in the US, sex of child may have an impact on breastfeeding, a health behavior that has a variety of positive impacts on infants throughout their lives. Boys, relative to girls, were at a disadvantage in breastfeeding initiation and duration. Future work is necessary to unpack the mechanisms behind these findings. In particular, how sex of child impacts how mothers and fathers view the nutritional needs of their children and breastfeeding more broadly.

Objective Our objective was to examine the likelihood of vaginal birth after cesarean (VBAC) for women in Massachusetts. Methods We used birth certificate data among term, singleton, vertex presentation births by repeat cesarean or VBAC to conduct logistic regression models to examine the likelihood of VBAC for women categorized into standard classifications of race and ethnicity and into 31 detailed ethnicities. Data were analyzed for the entire study period (1996-2010, N = 119,752) and for the last 5 years (2006-2010, N = 46,081). Results The adjusted odds of VBAC were lowest for non-Hispanic Black mothers (0.91, CI [0.85, 0.98]) and highest for Asian/Pacific Islander mothers (1.41, CI [1.31, 1.53]) relative to non-Hispanic White women. VBAC rates ranged from 5.8 % among Brazilians to 29.3 % among Cambodians. The adjusted odds of VBAC were lower for 7 of the 30 ethnic groups (range of AORs 0.40-0.89) and higher for 8 of the 30 ethnic groups (range of AORs 1.18-2.11) relative to self-identified American mothers. For the last 5 years, Asian/Pacific Islander mothers had a higher adjusted VBAC rate (1.39, CI [1.21, 1.60]), as did 9 of the 30 ethnic groups (range of 1.25-1.84). Only Brazilian mothers had lower rates (0.37, CI [0.27, 0.50]), relative to self-identified American mothers. Conclusions Detailed maternal ethnicity explains the variation in VBAC rates more precisely than broad race/ethnicity categories. Improvements in our public health data infrastructure to capture detailed ethnicity are recommended to identify and address disparities and improve the quality of maternity care.

Background: Our objective was to examine the likelihood of primary cesarean delivery for women at low risk for the procedure in Massachusetts., Methods: Birth certificate data for all births from 1996 to 2010 that were nulliparous, term, singleton, and vertex (NTSV; N = 427,393) were used to conduct logistic regression models to assess the likelihood of a cesarean delivery for each of the 31 ethnic groups relative to self-identified "American" mothers. The results were compared with broad classifications of race/ethnicity more commonly employed in research., Results: While 23.3 percent of American women had primary cesarean deliveries, cesarean delivery rates varied from 12.9 percent for Cambodian to 32.4 percent for Nigerian women. Women from 21 of 30 ethnic groups had higher odds of a primary cesarean (range of adjusted odds ratios [AORs] 1.09-1.77), while only Chinese, Cambodian, and Japanese women had lower odds (range of AORs 0.66-0.92), compared with self-identified "Americans." Using broad race/ethnicity categories, Non-Hispanic black, Hispanic, and "Other" women had higher odds of cesarean delivery relative to Non-Hispanic white women (range of AORs 1.12-1.47), while there were no differences for Asian or Pacific Islander women., Conclusions: Detailed maternal ethnicity explains the variation in NTSV cesarean delivery rates better than broad race/ethnicity categories. Different patterns of cesarean delivery between ethnic groups suggest cultural specificity related to birth culture., (© 2014 Wiley Periodicals, Inc.)

Objective: This study compared maternal smoking during pregnancy between the new Patient Protection and Affordable Care Act (ACA) data collection standards and Federal Office of Management and Budget (OMB) standards., Method: Data were from the Massachusetts Standard Certificate of Live Births on 1,156,472 babies from 1996 to 2010. A parent reported whether the mother smoked during pregnancy (yes/no), her race (5 options) and, separately, her ethnicity (39 categories). Prenatal smoking rates were compared between the ACA and OMB standards. Detailed ethnicity from the birth certificate was then examined within all broad categories of the ACA standards: White, Black/African American, Other Hispanic, Other Asian/Pacific Islander, and Other categories., Results: For Hispanic/Latina and Asian mothers, the ACA standards captured the variability in smoking across and within racial/ethnic groups more than the OMB standards. However, for White and Black/African American mothers, the broad ACA categories masked striking differences in prenatal smoking. While the overall prevalence among Whites was 10.2%, this ranged from 0.8% for Iranians to 21.0% for Cape Verdeans. Among Black/African Americans (7.6%), this ranged from 0.5% for Nigerians to 12.9% for African Americans. The ACA standards also combined ethnic groups with sizeable populations into Other Hispanics and Other Asian/Pacific Islanders., Conclusion: When population health surveys and other reporting tools are being revised, state and federal agencies should consider expanding all race/ethnicity categories to capture detailed ethnicity on everyone., (Copyright © 2014 Elsevier Inc. All rights reserved.)

Background: Although prior studies have shown disparities in maternal health behaviors according to race/ethnicity and acculturation, whether these patterns are evident among new immigrant populations remains unclear., Purpose: To examine the associations among proxies of acculturation and maternal smoking during pregnancy and breastfeeding initiation within each major ethnic group in Massachusetts., Methods: Data were from the Standard Certificate of Live Births on 1,067,375 babies by mothers from 31 ethnic groups for 1996-2009. Mothers reported whether they smoked during pregnancy and the birth facility recorded whether mothers started breastfeeding. The acculturation proxy combined mothers' country of birth and language preference: U.S.-born, foreign-born English-speaking, and foreign-born non-English speaking. For each ethnic group, adjusted logistic regression models were used to examine associations between the acculturation proxy and whether mothers smoked or initiated breastfeeding. Data were analyzed from 2012 to 2013., Results: A lower proportion of foreign-born mothers had a high school degree or private insurance than U.S.-born mothers. However, foreign-born mothers who were English (range of AORs=0.07-0.93) or non-English speakers (AORs=0.01-0.36) were less likely to smoke during pregnancy than their U.S.-born counterparts. Foreign-born mothers who were English (AORs=1.22-6.52) or non-English speakers (AORs=1.35-10.12) were also more likely to initiate breastfeeding compared to U.S.-born mothers, except for some mothers with Asian ethnicities., Conclusions: The consistency of the associations of being foreign-born with less smoking and more breastfeeding suggests that for the majority of ethnic groups studied, acculturation in the U.S. results in poorer maternal health behaviors., (Copyright © 2014 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.)

The 1997 revision to Federal Office of Management and Budget (OMB) Directive No. 15 Race and Ethnic Standards for Federal Statistics and Administrative Reporting provides standard classifications for reporting broad race categories and Hispanic/non-Hispanic ethnicity. However, the current system may be masking disparities in health behaviors and outcomes across ethnic groups. Since 2000, the Massachusetts Department of Public Health has been developing an alternative approach to collecting race, ethnicity, and language preference data to better serve the local population. Our data collection tool adheres to OMB standards but captures detailed ethnicity data independent of broad race categories. We believe that training personnel is an essential component of data collection, and we are planning to develop online training materials. Although we encourage states to learn from our experience, data need to be comparable within and across states as well as over time to monitor health disparities.