Differences in low-birthweight among documented and undocumented foreign-born and US-born Latinas

In the USA foreign-born women tend to have fewer low-birthweight births than US-born women from the same ethnicity. This "healthy migrant" effect could be caused by immigration of the fittest or by healthy people being deliberately selected in the immigration process. This study tests these hypotheses by comparing self-reported history of low-birth-weight among foreign-born documented and undocumented Latinas and US-born Latinas. The sample includes 2398 (57.5%) documented foreign-born Latinas, 782 (18.7%) undocumented foreign-born Latinas, and 993 (23.4%) US-born Latinas who initiated prenatal care at MIC-Women's Health Services/MHRA in New York City during 1996-1997. Only women who reported previous live births were included in the sample. Documented foreign-born Latinas were less likely than US-born Latinas to have low-birth-weight babies taking into account parity, age, risk, and education. There were no significant differences between rates of low-birthweight for undocumented foreign-born Latinas and US-born Latinas, or documented foreign-born Latinas. There was, however, a significant trend for rates of low-birthweight to increase from documented foreign-born to undocumented foreign-born to US-born women. This suggests that both official screening and migration of the fittest play a role in lower rates of low-birthweight among foreign-born Latinas compared to US-born Latinas.     

Factors Associated with Intention to Breastfeed Among Low-Income,Inner-City Pregnant Women

Objectives: To examine the relationship between sociodemographic factors, maternal characteristics, and intention to breastfeed among low-income, inner-city pregnant women. Methods: English and Spanish speaking low-income women recruited from local Philadelphia health centers were surveyed at the time of their first prenatal care visit. At the time of the visit, respondents were asked whether or not they planned to breastfeed their infant. The responses of 2,690 women were included in these analyses. Multivariate logistic regression was used to assess the independent associations of race/ethnicity, nativity status, education, and other factors on the odds of intending to breastfeed. Results: About half (53%) of the respondents reported that they intended to breastfeed their infant. In adjusted logistic regression models, immigrant black (adjusted OR [aOR] 5.82; 95% confidence interval [CI] 3.86, 8.77), other Hispanic (who were predominantly foreign-born) (aOR 6.05; 95% CI 3.92, 9.33), and island-born Puerto Rican (aOR 3.48; 95% CI 2.04, 5.95) women were significantly more likely to report that they intended to breastfeed than non-Hispanic whites. Somewhat surprisingly, non-Hispanic, US-born African Americans in this low-income sample were more likely to report that they intended to breastfeed than non-Hispanic white respondents (aOR 1.59; 95% CI 1.20, 2.11). Lower education, not living with the baby's father, multiparous pregnancy, and smoking were negatively and independently associated with intention to breastfeed. Maternal age, household income, public housing, and depressive symptoms were not significant predictors of breastfeeding intention in adjusted multivariate models. Conclusions: Significant differences were documented in breastfeeding intention in our sample of low-income, inner-city women. Most notable was the higher likelihood of anticipated breastfeeding among our immigrant sub-groups when compared with non-Hispanic white women. An unexpected finding was the higher likelihood of anticipated breastfeeding among native-born, non-Hispanic African American women than among non-Hispanic white respondents. Because intentions are important predictors of future behavior, more focus needs to be directed towards breastfeeding promotion during the prenatal period and towards a better understanding of why some mothers intend to breastfeed while others do not.     

Variation in Birth Outcomes by Mother’s Country of Birth Among Non-Hispanic Black Women in the United States

Rates of prematurity (PTB) and small-for-gestational age (SGA) were compared between US-born and foreign-born non-Hispanic black women. Comparisons were also made between Sub-Saharan African-born and Caribbean-born black women and by maternal country of birth within the two regions. Comparisons were adjusted for sociodemographic, health behavioral and medical risk factors available on the birth record. Birth record data (2008) from all states (n = 27) where mother’s country of birth was recorded were used. These data comprised 58 % of all singleton births to non-Hispanic black women in that year. Pearson Chi square and logistic regression were used to investigate variation in the rates of PTB and SGA by maternal nativity. Foreign-born non-Hispanic black women had significantly lower rates of PTB (OR 0.727; CI 0. 726, 0.727) and SGA (OR 0.742; CI 0.739–0.745) compared to US-born non-Hispanic black women in a fully adjusted model. Sub-Saharan African-born black women compared to Caribbean-born black women had significantly lower rates of PTB and SGA. Within each region, the rates of PTB and SGA varied by mother’s country of birth. These differences could not be explained by adjustment for known risk factors obtained from vital records. Considerable heterogeneity in rates of PTB and SGA among non-Hispanic black women in the US by maternal nativity was documented and remained unexplained after adjustment for known risk factors.     

Ever vs Never Smoking among an Urban, Multiethnic Sample of Haitian-, Caribbean-, and U.S.-Born Blacks

Background.Despite the high rate of current smoking among blacks in the United States, to date there have been no studies comparing smoking rates or predictors of smoking among adults from different black ethnic groups living in the United States. If cancer control programs are to successfully reduce the risk of smoking-related cancers within black communities, more extensive data on demographics, knowledge, attitudes, beliefs, and practices within ethnic groups are needed.Methods.We conducted a structured telephone interview to assess smoking status, alcohol use, cancer-related attitudes and beliefs, and demographic information among Haitian-born (N= 165), Caribbean-born (N= 354), and U.S.-born (N= 402) blacks living in New York City in 1992.Results.Relative to U.S.-born participants, both Caribbean- and Haitian-born participants were significantly less likely to have ever smoked. Although both groups of foreign-born men were much more likely to have ever smoked relative to their female counterparts, U.S.-born men and women were equally likely to have ever smoked. Alcohol use was consistently related to smoking across ethnic and gender groups, and this association was enhanced among older drinkers. The belief that smoking is not related to cancer was associated with an almost twofold increase of ever smoking.Conclusions.The rate of ever smoking among urban, foreign-born blacks is considerably lower than among U.S.-born blacks; among the foreign-born participants, ever smoking was lower among women relative to men. Alcohol use is an important predictor of smoking status, particularly among older drinkers.     

Perinatal Outcomes Among Foreign-Born and US-Born Chinese Americans, 1995–2000

This paper examines nativity differences in adverse perinatal outcomes of Chinese-American mothers. Singleton live births to US-resident Chinese women (150,620 foreign-born, 15,040 US-born) and a random sample of 150,620 non-Hispanic White mothers were selected from 1995 to 2000 national linked birth/infant death certificate files. Associations between maternal nativity status and adverse perinatal outcomes were assessed using multivariable logistic regressions. Compared to US-born Chinese mothers, foreign-born Chinese mothers were less likely to be unmarried, teen mothers, have a non-Hispanic White or other race partner, be rural residents, and more likely to be less educated, or utilize prenatal care inadequately. Controlling for these factors, foreign-born Chinese-American mothers had significantly lower risks for low birth weight, preterm birth, and small-for-gestational age, whereas risks for infant mortality, neonatal mortality, and post-neonatal mortality did not differ significantly from those of infants of US-born Chinese mothers. Chinese Americans exhibited clear nativity differentials for adverse birth outcomes.     

Self-Reported and Measured Hypertension Among Older US- and Foreign-Born Adults

Self-reported hypertension is frequently used for health surveillance. However, little is known about the validity of self-reported hypertension among older Americans by nativity status. This study compared self-reported and measured hypertension among older black, white, and Hispanic Americans by nativity using the 2006 and 2008 Health and Retirement Study (n = 13,451). Sensitivity and specificity of self-reported hypertension were calculated using the Seventh report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure definition. Sensitivity was high among older blacks (88.9%), whites (82.8%), and Hispanics (84.0%), and both foreign-born (83.2%) and US-born (84.0%). Specificity was above 90% for both US-born and foreign-born, but higher for whites (92.8%) than blacks (86.0%). Despite the potential vulnerability of older foreign-born Americans, self-reported hypertension may be considered a reasonable estimate of hypertension status. Future research should confirm these findings in samples with a larger and more ethnically diverse foreign-born population.     

Disparities in Cesarean Delivery by Ethnicity and Nativity in New York City

Our objective was to examine differences in risk of cesarean delivery among diverse ethnic groups in New York City. Using cross-sectional New York City birth and hospitalization data from 1995 to 2003 (n = 961,381) we estimated risk ratios for ethnic groups relative to non-Hispanic whites and immigrant women relative to US-born women. Adjusting for insurance, pre-pregnancy weight, maternal age, education, parity, birthweight, gestational age, year, medical complications, and pregnancy complications, all ethnic groups except East Asian women were at an increased risk of cesarean delivery, with the highest risk among Hispanic Caribbean women [adjusted risk ratio (aRR) = 1.27, 95 % CI (confidence interval) = 1.24, 1.30] and African American women (aRR = 1.20, 95 % CI = 1.17, 1.23). Among Hispanic groups, immigrant status further increased adjusted risk of cesarean delivery; adjusted risk ratios for foreign-born women compared to US-born women of the same ethnic group were 1.27 for Mexican women (95 % CI = 1.05, 1.53), 1.23 for Hispanic Caribbean women (95 % CI = 1.20, 1.27), and 1.12 for Central/South American women (95 % CI = 1.04, 1.21). Similar patterns were found in subgroup analyses of low-risk women (term delivery and no pregnancy or medical complications) and primiparous women. We found evidence of disparities by ethnicity and nativity in cesarean delivery rates after adjusting for multiple risk factors. Efforts to reduce rates of cesarean delivery should address these disparities. Future research should explore potential explanations including hospital environment, provider bias, and patient preference.     

Adverse Birth Outcomes Among Korean Women Compared to White Women in the United States

To evaluate the risk of adverse birth outcomes among US- and foreign-born Korean women compared to US-born white women, we used the 2004 US natality file to assess the risk of low birth weight (LBW), preterm delivery (PTD), and cesarean delivery (CD) among US-born (N = 943) and foreign-born Koreans (N = 11,974) compared to white women (N = 25,834). Adjusted odds ratios (aOR) and 95% confidence intervals (CI) were calculated using regression models to assess the risk of these outcomes. US-born (aOR = 0.66, 95% CI 0.43–1.02) and foreign-born Korean women (aOR 0.86, 95% CI 0.70–1.06) exhibited a lowered risk of LBW than white women, although not statistically significant. The risks of PTD and CD among Korean women were similar to white women, regardless of Korean women’s nativity status. Future research should focus on identifying the cultural factors and practices associated with decreased risk of LBW among Korean women.     

Health, life expectancy, and mortality patterns among immigrant populations in the United States

BACKGROUND: The US immigrant population has grown considerably in the last three decades, from 9.6 million in 1970 to 32.5 million in 2002. However, this unprecedented population rise has not been accompanied by increased immigrant health monitoring. In this study, we examined the extent to which US- and foreign-born blacks, whites, Asians, and Hispanics differ in their health, life expectancy, and mortality patterns across the life course. METHODS: We used National Vital Statistics System (1986-2000) and National Health Interview Survey (1992-1995) data to examine nativity differentials in health outcomes. Logistic regression and age-adjusted death rates were used to examine differentials. RESULTS: Male and female immigrants had, respectively, 3.4 and 2.5 years longer life expectancy than the US-born. Compared to their US-born counterparts, black immigrant men and women had, respectively, 9.4 and 7.8 years longer life expectancy, but Chinese, Japanese, and Filipino immigrants had lower life expectancy. Most immigrant groups had lower risks of infant mortality and low birthweight than the US-born. Consistent with the acculturation hypothesis, immigrants' risks of disability and chronic disease morbidity increased with increasing length of residence. Cancer and other chronic disease mortality patterns for immigrants and natives varied considerably, with Asian Immigrants experiencing substantially higher stomach, liver and cervical cancer mortality than the US-born. Immigrants, however, had significantly lower mortality from lung, colorectal, breast, prostate and esophageal cancer, cardiovascular disease, cirrhosis, diabetes, respiratory diseases, HIV/AIDS, and suicide. INTERPRETATION: Migration selectivity, social support, socio-economic, and behavioural characteristics may account for health differentials between immigrants and the US-born.     

Low birthweight among US Hispanic/Latino subgroups: The effect of maternal foreign-born status and education

We investigated whether maternal foreign-born status confers a protective effect against low birthweight (LBW) across US Hispanic/Latino subgroups (i.e., Mexicans, Puerto Ricans, Cubans and Central/South Americans) in the USA, and whether the association between maternal education and LBW varies by Hispanic/Latino subgroup and by foreign-born status. We conducted logistic regression analyses of the 2002 US Natality Detail Data (n=634,797). Overall, foreign-born Latino women are less likely to have LBW infants than US-born Latino women.The protective effect of foreign-born status is stronger among Latino women with less than high school education. The maternal education gradient is significantly flatter among foreign-born Latino women than among their US-born counterparts (p<0.001). Patterns among Mexican-origin women account for the overall trends among all Latinos.Foreign-born status (main effect) reduces the risk of LBW among Mexicans by about 21% but does not protect against LBW among other Latino subgroups (i.e., Puerto Ricans, Cubans and Central/South Americans). Among Mexicans and Central South Americans, the protective effect of foreign-born status is stronger among women with low education (i.e., 0–11 and 12 years) than among women with more education (i.e., 13–15 and 16+ years). The educational gradient in LBW is less pronounced among foreign-born Mexicans and Central/South Americans than among their US-born counterparts.As such, maternal foreign-born status and education are associated with LBW, though the direction and strength of these associations vary across Latino subgroups. A “health paradox” is apparent for foreign-born Mexican and Central/South American women among whom there is a weak maternal educational gradient in LBW. Future research may test hypotheses regarding the mechanisms underlying these variations in LBW among Latino subgroups, i.e., different gradients in sending countries, health selection of immigrants, cultural factors, and social support.     

Depressive Symptomatology and Mental Health Help-Seeking Patterns of U.S.- and Foreign-Born Mothers

Objectives: This report presents the national estimates of maternal depressive symptomatology prevalence and its socio-demographic correlates among major racial/ethnic-nativity groups in the United States. We also examined the relationship of mental health-seeking patterns by race/ethnicity and nativity. Methods: Using the Early Childhood Longitudinal Survey-Birth Cohort Nine-month data, we present the distribution of Center for Epidemiological Study-Depression (CES-D) score by new mothers’ nativity and race/ethnicity. The mental health-seeking pattern study was limited to mothers with moderate to severe symptoms. Weighted prevalence and 95% confidence intervals for depression score categories were presented by race/ethnic groups and nativity. Multi-variable logistic regression was used to obtain the adjusted odds ratios of help-seeking patterns by race/ethnicity and nativity in mothers with moderate to severe symptoms. Results: Compared to foreign-born mothers, mothers born in the U.S. were more likely to have moderate to severe depressive symptoms in every racial/ethnic group except for Asian/Pacific Islanders. These US-born mothers were also more likely to be teenagers, lack a partner at home, and live in rural areas. Among Asians, Filipina mothers had the highest rate of severe depressive symptoms (9.6%), similar to those of US-born black mothers (10.2%). Racial/ethnic minorities and foreign-born mothers were less likely to consult doctors (OR: 2.2 to 2.5) or think they needed consultation (OR: 1.9 to 2.2) for their emotional problems compare to non-Hispanic White mothers. Conclusion: Our research suggests that previous “global estimates” on Asian American mental health underestimated sub-ethnic group differences. More efforts are needed to overcome the barriers in mental health services access and utilizations, especially in minority and foreign-born populations.     

Low birthweight among US Hispanic/Latino subgroups: the effect of maternal foreign-born status and education

We investigated whether maternal foreign-born status confers a protective effect against low birthweight (LBW) across US Hispanic/Latino subgroups (i.e., Mexicans, Puerto Ricans, Cubans and Central/South Americans) in the USA, and whether the association between maternal education and LBW varies by Hispanic/Latino subgroup and by foreign-born status. We conducted logistic regression analyses of the 2002 US Natality Detail Data (n=634,797). Overall, foreign-born Latino women are less likely to have LBW infants than US-born Latino women. The protective effect of foreign-born status is stronger among Latino women with less than high school education. The maternal education gradient is significantly flatter among foreign-born Latino women than among their US-born counterparts (p<0.001). Patterns among Mexican-origin women account for the overall trends among all Latinos.Foreign-born status (main effect) reduces the risk of LBW among Mexicans by about 21% but does not protect against LBW among other Latino subgroups (i.e., Puerto Ricans, Cubans and Central/South Americans). Among Mexicans and Central South Americans, the protective effect of foreign-born status is stronger among women with low education (i.e., 0-11 and 12 years) than among women with more education (i.e., 13-15 and 16+ years). The educational gradient in LBW is less pronounced among foreign-born Mexicans and Central/South Americans than among their US-born counterparts. As such, maternal foreign-born status and education are associated with LBW, though the direction and strength of these associations vary across Latino subgroups. A "health paradox" is apparent for foreign-born Mexican and Central/South American women among whom there is a weak maternal educational gradient in LBW. Future research may test hypotheses regarding the mechanisms underlying these variations in LBW among Latino subgroups, i.e., different gradients in sending countries, health selection of immigrants, cultural factors, and social support.     

Racial/Ethnic and Nativity Differences in Birth Outcomes Among Mothers in New York City: The Role of Social Ties and Social Support

Immigrants have lower rates of low birth weight (LBW) and to some extent preterm birth (PTB), than their US-born counterparts. This pattern has been termed the ‘immigrant health paradox’. Social ties and support are one proposed explanation for this phenomenon. We examined the contribution of social ties and social support to LBW and PTB by race/ethnicity and nativity among women in New York City (NYC). The NYC Pregnancy Risk Assessment Monitoring System survey (2004–2007) data, linked with the selected items from birth certificates, were used to examine LBW and PTB by race/ethnicity and nativity status and the role of social ties and social support to adverse birth outcomes using bivariate and multivariable analyses. SUDAAN software was used to adjust for complex survey design and sampling weights. US- and foreign-born Blacks had significantly increased odds of PTB [adjusted odds ratio (AOR) = 2.43, 95 % CI 1.56, 3.77 and AOR = 2.6, 95 % CI 1.66, 4.24, respectively] compared to US-born Whites. Odds of PTB among foreign-born Other Latinas, Island-born Puerto Ricans’ and foreign-born Asians’ were not significantly different from US-born Whites, while odds of PTB for foreign-born Whites were significantly lower (AOR = 0.47, 95 % CI 0.26, 0.84). US and foreign-born Blacks’ odds of LBW were 2.5 fold that of US-born Whites. Fewer social ties were associated with 32–39 % lower odds of PTB. Lower social support was associated with decreased odds of LBW (AOR 0.69, 95 % CI 0.50, 0.96). We found stronger evidence of the immigrant health paradox across racial/ethnic groups for PTB than for LBW. Results also point to the importance of accurately assessing social ties and social support during pregnancy and to considering the potential downside of social ties.     

Pregnancy outcomes of US-born and foreign-born Japanese Americans.

OBJECTIVES: This study investigated the birth outcomes of Japanese Americans, focusing on the role of the mother's place of birth. METHODS: Single live births to US-resident Japanese American mothers (n = 37,941) were selected from the 1983 through 1987 US linked live birth-infant death files. RESULTS: US-born mothers were more likely than foreign-born mothers to be less than 18 years old and not married, to start prenatal care early, and to more adequately use prenatal care. Infants of foreign-born Japanese Americans had a slightly lower risk of low birthweight.No significant differences were found between nativity groups for very low birthweight or neonatal, postneonatal, and infant mortality. The mortality rates of infants of US-born (6.2) and foreign-born (5.4) Japanese American women were below the US Year 2000 objective but still exceeded Japan's 1990 rate (4.6). However, low-birthweight percentages of the US-born group (5.7%) and the foreign-born group (5.0%) were similar to that of Japan (5.5%). CONCLUSIONS: The infants of foreign-born Japanese-American women exhibited modestly better low-birthweight percentages than those of US-born Japanese Americans. This finding supports theories of the healthy immigrant.     

Prenatal Care and Risk of Preterm Birth Among Foreign and US-Born Mothers in Michigan

Studies among ethnic minorities suggest that prenatal care (PNC) may be less protective against preterm birth (PTB) among foreign-born relative to US-born mothers. We assessed relations between nativity, PNC inadequacy, and PTB risk over 17 years in one US state. Adjusted multivariable models were fit to assess the potential interaction between nativity and PNC inadequacy as a determinant of PTB. Additionally, we calculated predicted probabilities of PTB by PNC inadequacy, stratified by nativity. In adjusted models of PTB, there was a significant interaction (P _interaction < 0.01) between nativity and PNC inadequacy. US-born mothers who did not use PNC adequately had 2.9% higher predicted probability of PTB than adequate users, which compares to 1.9% difference among foreign-born mothers. While adequate PNC use was lower among foreign-born compared to native born mothers, when accessed, PNC use may be less protective against PTB among foreign-born mothers relative to native-born mothers. Differences in cultural health traditions during pregnancy, or baseline health status between foreign and native-born mothers may mediate our findings.     

Diabetes among US- and foreign-born blacks in the USA

Objective. Little is known about diabetes status among US blacks by nativity. This study aims to measure differences in diabetes among US blacks by region of birth and examines potential explanations for subgroup differences.

Design. Data from 47,751 blacks aged 25–74 pooled from the 2000–2013 waves of the National Health Interview Survey were analyzed. Logistic regression models predicted self-reported diabetes. The roles of education, income, body mass index (BMI), smoking, and duration of US residence were explored.

Results. Compared to the US-born, foreign-born blacks had significantly lower reported diabetes prevalence (8.94% vs. 11.84%) and diabetes odds ratio [OR: 0.75; 95% confidence interval (CI): 0.62, 0.89], adjusting for socio-demographic characteristics. Further inclusion of education, income, household size, and smoking did not appreciably change the OR (0.77; 95% CI: 0.61, 0.86). Including an adjustment for BMI entirely eliminated the foreign-born advantage (OR 0.93; 95% CI: 0.78, 1.11). The foreign-born from the Caribbean/Americas had similar diabetes odds compared to the African-born. Among the foreign-born, an increased duration of US residence was associated with a higher diabetes odds, but these associations did not reach statistical significance (p > 0.05).

Conclusion. The healthy immigrant advantage extended to diabetes among US blacks, a finding that is explained by lower levels of overweight/obesity among the foreign-born compared to the US-born. Nonetheless, more than 71.4% of the foreign-born were overweight or obese. Understanding the mechanisms through which exposure to the US environment leads to higher obesity and diabetes risk may aid prevention efforts for the rapidly growing foreign-born black subpopulation.     

Welfare Reform and the Perinatal Health and Health Care Use of Latino Women in California, New York City, and Texas

OBJECTIVES: This study analyzed changes in the financing of prenatal care and delivery, the use of prenatal care, and birth outcomes among foreign-born vs US-born Latino women following enactment of the Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) in August 1996. METHODS: We used a pre-post design with a comparison group. The sample consisted of resident Latinas in California, New York City, and Texas who delivered a live infant in 1995 or 1998. RESULTS: The proportion of births to Latinas that initiated prenatal care in the first 4 months of pregnancy increased for all foreign-born Latinas in California, New York City, and Texas between 1995 and 1998 (P <.05). Except for non-Dominicans in New York City, there was no increase in the proportion of low- or very-low-birthweight births among foreign-born vs US-born Latinas in the 3 localities between 1995 and 1996. CONCLUSIONS: There is little evidence from vital statistics in California, New York City, and Texas that PRWORA had any substantive impact on the perinatal health and health care utilization of foreign-born relative to US-born Latinas.     

Lower Rates of Preterm Birth in Women of Arab Ancestry: An Epidemiologic Paradox—Michigan, 1993–2002

Objective: Preterm birth (PTB), <37 weeks gestation, occurs in 12.1% of live births annually and is associated with significant morbidity and mortality in the United States. Racial/ethnic subgroups are disproportionately affected by PTB. Michigan is home to one of the largest Arab-American communities in the country; however, little is known about PTB in this population. This study examined the maternal demographic profile and risk factors of preterm birth (PTB) among foreign-born and US-born women of Arab ancestry relative to US-born Whites in Michigan. Methods: Using Michigan Vital Statistics data, we examined correlates of PTB for primiparous U.S.-born white (n = 205,749), U.S.-born Arab (n=1,697), and foreign-born Arab (n=5,997) women who had had a live-born singleton infant during 1993–2002. We examined variables commonly reported to be associated with PTB, including mother's age and education; insurance type; marital status of parents; receipt of prenatal care; mother's chronic hypertension, diabetes, and tobacco use; and infant sex. Results: Foreign-born Arabs are less educated and more likely to be on Medicaid, and they receive less prenatal care than US-born Whites. Prevalence of PTB was 8.5, 8.0, and 7.5% for US-born Whites, US-born Arabs, and foreign-born Arabs, respectively. Pregnancy-related hypertension was the only predictor of PTB that these three groups had in common: Adjusted Odds Ratio (AOR)=2.1 (95% Confidence Interval (CI)=1.99, 2.21), AOR=2.6 (95% CI=1.24, 5.51), and AOR=2.6 (95% CI=1.55, 4.31) for US-born whites, US-born Arabs, and foreign-born Arabs, respectively. Conclusions: Foreign-born Arab women in Michigan have a higher-risk maternal demographic profile than that of their US-born white counterparts; however, their prevalence of PTB is lower, which is consistent with the epidemiologic paradox reported among foreign-born Hispanic women.     

The effect of ethnicity and maternal birthplace on small-for-gestational-age deliveries to HIV-infected women

Objective To examine the relative role of ethnicity and maternal birthplace on small-for-gestational-age (SGA) deliveries of a cohort of mothers in New York who were infected with human immunodeficiency virus. Methods Medicaid claims and linked vital statistics records were examined for 2,525 singleton deliveries to HIV-infected women from 1993 through 1996. We estimated adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of SGA delivery associated with ethnicity (i.e., white, white-Latina, black, and black-Latina) and maternal birthplace (i.e., native US/Puerto Rican vs. foreign born) in a series of multivariate regression models to which we sequentially added demographic, health services, and lifestyle factors (i.e., alcohol, tobacco, and illicit drug use). Results Of the deliveries, 10% were SGA. The odds of SGA infants for black and white women did not differ by maternal birthplace. Foreign-born white-Latinas and black-Latinas had lower unadjusted odds of a SGA delivery than their US-born counterparts (OR 0.29, CI 0.14, 0.61 and OR 0.22, CI 0.07, 0.71, respectively). After adjustment for maternal lifestyle characteristics, the odds of SGA delivery were 0.50 (CI 0.23, 1.09) for white-Latina mothers and 0.60 (CI 0.17, 2.08) for black-Latina mothers. Conclusions SGA outcomes did not differ by maternal birthplace for black and white women. Differences in lifestyle factors appear to contribute to lower odds of SGA delivery for foreign-born versus US-born white- and black-Latina HIV-infected women. The authors’ opinions are not necessarily those of the New York State Department of Health.     

Higher Mortality Rate Among Infants of US-Born Mothers Compared to Foreign-Born Mothers in New York City

This study is to compare infant mortality rates (IMRs) between US- and foreign-born mothers in New York City. The linked live birth-infant death records from 1995 to 1998 were analyzed. Overall US-born mothers had a higher IMR than foreign-born mothers, though there were great variations in IMRs by country of maternal birth among foreign-born mothers. US-born mothers had higher IMRs compared to foreign-born mothers for several maternal/infant characteristics. Logistic regression analyses indicated that infants of foreign-born mothers were less likely to die from prematurity, Sudden Infant Death Syndrome and external causes, but were more likely to die of congenital anomalies than those of US-born mothers. Further analyses on the interactions of maternal race/ethnicity and country of birth showed variations in the IMRs of leading causes of death. Infant mortality reduction strategies should be differentially targeted to minority mothers of different countries of birth, particularly for potentially preventable causes of deaths.