Kristen S. Marchi

Adolescent health insurance coverage: recent changes and access to care.

Objective. To assess the health insurance status of adolescents, the trends in adolescent health care coverage, the demographic and socioeconomic correlates of insurance coverage, and the role that insurance coverage plays in influencing access to and use of health care. Together, the results provide a current and comprehensive profile of adolescent health insurance coverage. Methods. We analyzed data on 14 252 adolescents, ages 10 to 18 years, included in the 1995 National Health Interview Survey. The survey obtained information on insurance coverage and several measures of access and utilization, including usual source of care, site of the usual source of care, indications of missed or delayed care, and use of ambulatory physician services by adolescents. We conducted multivariate analyses to assess the independent association of age, sex, race, poverty status, family structure, family size, region of residence, metropolitan resident status, and health status on the likelihood of insurance coverage. We conducted bivariate and multivariate analyses to ascertain how insurance coverage was related to each of the access and utilization measures obtained in the survey. We also examined trends in health insurance coverage using the 1984, 1989, and 1995 editions of the National Health Interview Survey. Results. An estimated 14.1% of adolescents were uninsured in 1995. Risk of being uninsured was higher for older adolescents, minorities, adolescents in low-income families, and adolescents in single parent households. Compared with their insured counterparts, uninsured adolescents were five times as likely to lack a usual source of care, four times as likely to have unmet health needs, and twice as likely to go without a physician contact during the course of a year. Between 1984 and 1995 the percentage of adolescents with some form of health insurance coverage remained essentially unchanged. During this period, the prevalence of private health insurance decreased, while the prevalence of public health insurance increased. Conclusions. This study demonstrates the critical importance of health insurance as a determinant of access to and use of health services among adolescents. It also shows that little progress has been made during the past 15 years in reducing the size of the uninsured adolescent population. The new State Childrens Health Insurance Program could lead to substantial improvements in access to care for adolescents, but only if states implement effective outreach and enrollment strategies for uninsured adolescents. adolescents, health insurance, access, Medicaid, SCHIP.

Socioeconomic and racial/ethnic disparities in unintended pregnancy among postpartum women in California.

Objective: We examined social disparities in unintended pregnancy among postpartum women to better understand 1) the role of socioeconomic factors in racial/ethnic disparities and 2) factors that might explain both socioeconomic and racial/ethnic disparities in the risk for unintended pregnancy among women who give birth. Methods: We used 1999 and 2000 data from a statewide-representative mail and telephone survey of postpartum women in California (N = 7044). We examined associations between unintended pregnancy and race/ethnicity (African American, Asian or Pacific Islander, U.S.-born Latina, foreign-born Latina, European or Middle Eastern), three socioeconomic factors (poverty status, maternal education, paternal education), and several potential explanatory factors. Results: Overall, racial/ethnic disparities in unintended pregnancy were reduced by the three socioeconomic factors individually and collectively (e.g., reducing higher unadjusted odds for African Americans from 3.4 to 1.9); additional adjustment for marital status age, parity, insurance, language, abuse, sense of control, and interaction between marital status and race/ethnicity (each independently associated with unintended pregnancy) reduced the socioeconomic disparities (e.g., reducing odds for the poorest women from 4.1 to 2.3). Although reduced, significant racial/ethnic and socioeconomic disparities remained after adjustment, but generally only among married women. Results for Latinas appeared to vary by nativity, with foreign-born Latinas being at lower odds and U.S.-born Latinas being at higher odds of unintended pregnancy. Conclusions: Racial/ethnic disparities in unintended pregnancy are partly explained by the socioeconomic factors we measured. Several additional factors were identified that suggest possible directions for policies and programs to help reduce social disparities in unintended pregnancy among childbearing women.

Barriers to timely prenatal care among women with insurance: the importance of prepregnancy factors ☆

Objective This study, designed to avoid methodologic limitations of previous research, aimed to identify the important noninsurance barriers to timely prenatal care. Methods We identified a subsample of a cross-sectional statewide representative postpartum survey conducted in California during 1994–1995, focusing on 3071 low-income women with Medi-Cal or private coverage throughout pregnancy. Results Twenty-eight percent of those women had untimely care, although only 6% were unaware of their pregnancies during the first trimester. Controlling for numerous sociodemographic factors; knowledge, attitudes, beliefs, and behaviors; stressful life circumstances; and logistic obstacles that might deter seeking or receiving care, the following risk factors for untimely care were significant and experienced by more than one fifth of women: unwanted or unplanned pregnancy (affecting 43% and 66% of women, respectively), no regular provider before pregnancy (affecting 22% of women), and no schooling beyond high school (affecting 76% of women). Transportation problems, affecting 8% of women, appeared to be the only significant logistic barrier to timely care. Conclusion Improving timeliness of prenatal care among low-income women with third-party coverage is likely to require broad social and health policies that focus on factors affecting women before pregnancy. Assistance with transportation could contribute to more timely care for some low-income women, but programs focusing primarily on other noninsurance barriers during pregnancy might not substantially improve the timeliness of care, at least among low-income women with third-party coverage.

Timing of insurance coverage and use of prenatal care among low-income women.

OBJECTIVES This study examined the relationship between timing of insurance coverage and prenatal care among low-income women. METHODS Timeliness of prenatal care initiation and adequacy of number of visits were studied among 5455 low-income participants in a larger cross-sectional statewide survey of postpartum women in California during 1994-1995. RESULTS Although only 2% of women remained uninsured throughout pregnancy, one fifth lacked coverage during the first trimester. Rates of untimely care were highest (> or =64%) among women who were uninsured throughout their pregnancy or whose coverage began after the first trimester; rates were lowest (about 10%) among women who obtained coverage during the first trimester. Women who first obtained Medi-Cal coverage during pregnancy were at low risk of having too few visits. CONCLUSIONS Timing of prenatal coverage should be considered in research on the relationship between coverage and care use among low-income women. Earlier studies that relied solely on principal payer information, without data on when coverage began, may have led to inaccurate inferences about lack of coverage as a barrier to prenatal care.

The Role of Socioeconomic Factors in Black–White Disparities in Preterm Birth

OBJECTIVES We investigated the role of socioeconomic factors in Black-White disparities in preterm birth (PTB). METHODS We used the population-based California Maternal and Infant Health Assessment survey and birth certificate data on 10 400 US-born Black and White California residents who gave birth during 2003 to 2010 to examine rates and relative likelihoods of PTB among Black versus White women, with adjustment for multiple socioeconomic factors and covariables. RESULTS Greater socioeconomic advantage was generally associated with lower PTB rates among White but not Black women. There were no significant Black-White disparities within the most socioeconomically disadvantaged subgroups; Black-White disparities were seen only within more advantaged subgroups. CONCLUSIONS Socioeconomic factors play an important but complex role in PTB disparities. The absence of Black-White disparities in PTB within certain socioeconomic subgroups, alongside substantial disparities within others, suggests that social factors moderate the disparity. Further research should explore social factors suggested by the literature-including life course socioeconomic experiences and racism-related stress, and the biological pathways through which they operate-as potential contributors to PTB among Black and White women with different levels of social advantage.

Risk factors for late or no prenatal care following Medicaid expansions in California.

Objectives: To describe the characteristics and risk factors of women with only third-trimester (late) or no prenatal care. Methods: A statewide postpartum survey was conducted that included 6364 low-income women delivering in California hospitals in 1994 and 1995. Results: The following factors appeared most important, considering both prevalence and association with late or no care: poverty, being uninsured, multiparity, being unmarried, and unplanned pregnancy. Forty-two percent of women with no care were uninsured, and uninsured women were at dramatically increased risk of no care. Over 40% of uninsured women with no care had applied for Medi-Cal prenatally but did not receive it. Risks did not vary by ethnicity except that African American women were at lower risk of late care than women of European background. Child care problems were not significantly associated with either late or no care, and transportation problems (not asked of women with no care) were not significantly related to late care. Conclusions: Lack of insurance appeared to be a significant barrier for the 40% of women with no care who unsuccessfully applied for Medi-Cal prenatally, indicating a need to address barriers to Medi-Cal enrollment. However, lack of financial access is unlikely to completely explain the dramatic risks associated with being uninsured. In addition to eliminating barriers to prenatal coverage, policies to reduce late/no care should focus on pre-pregnancy factors (e.g., planned pregnancy and poverty reduction) rather than on logistical barriers during pregnancy.

Is Neighborhood Deprivation Independently Associated with Maternal and Infant Health? Evidence from Florida and Washington

ObjectivesTo determine whether a widely used measure of neighborhood-level socioeconomic deprivation was associated with unintended pregnancy, delayed/no prenatal care, low birth weight (LBW), and not breastfeeding, after adjusting for a more comprehensive set of individual-level socioeconomic factors than previously reported.MethodsData from CDC’s Pregnancy Risk Assessment Monitoring System (PRAMS) in Washington and Florida (1997–1998) were linked with census tract-level data (2000) based on birth certificate addresses. For each state, logistic regression models were estimated for associations between neighborhood deprivation measured by the Townsend Index and each dependent variable, unadjusted and then adjusting for maternal age, parity, racial/ethnic group, and education; paternal education; and family income. Similar models were estimated for each racial/ethnic group separately.ResultsDespite significant unadjusted associations between neighborhood deprivation and all dependent variables except LBW in Washington, few statistically significant associations were found in the adjusted models overall. In stratified models, African American women in low-deprivation Florida neighborhoods had higher odds of delayed/no prenatal care compared with their moderate-deprivation counterparts, and only among European American women were high-deprivation neighborhoods associated with increased odds of delayed/no prenatal care.ConclusionsThese results, which may not be generalizable beyond Florida and Washington or to other health indicators, suggest that some previously reported associations between neighborhood characteristics and the selected health indicators may reflect residual confounding by individual-level socioeconomic status/position. Until methodological and conceptual challenges regarding mediation (“over-controlling”) and measurement of neighborhood exposure are overcome, conclusions regarding independent neighborhood associations should be made with caution.

Most pregnant women in California do not receive dental care: findings from a population-based study.

Objectives. We examined the prevalence of dental care during pregnancy and reasons for lack of care. Methods. Using a population-based survey of 21,732 postpartum women in California during 2002–2007, we calculated prevalence of dental problems, receipt of care, and reasons for non-receipt of care. We used logistic regression to estimate odds of non-receipt of care by maternal characteristics. Results. Overall, 65% of women had no dental visit during pregnancy; 52% reported a dental problem prenatally, with 62% of those women not receiving care. After adjustment, factors associated with non-receipt of care included non-European American race/ethnicity, lack of a college degree, lack of private prenatal insurance, no first-trimester prenatal insurance coverage, lower income, language other than English spoken at home, and no usual source of pre-pregnancy medical care. The primary reason stated for non-receipt of dental care was lack of perceived need, followed by financial barriers. Conclusions. Most pregnant women in this study received insufficient dental care. Odds were elevated not only among the poorest, least educated mothers, but also among those with moderate incomes or some college education. The need for dental care during pregnancy must be promoted widely among both the public and providers, and financial barriers to dental care should be addressed.

Sociocultural Determinants of Teenage Childbearing Among Latinas in California

Objectives U.S. Latinas have a persistently high rate of teenage childbearing, which is associated with adverse outcomes for both mother and child. This study was designed to investigate the roles of socioeconomic factors and acculturation in teenage childbearing in this population. Methods Logistic regression was used to analyze the association of measures of acculturation (language spoken at home, nativity, and age at immigration) and respondents’ parents’ education with age at first birth in a stratified sample of post-partum women in California. Results The unadjusted odds ratio for teenage birth for Latinas versus non-Latina Whites was 5.2 (95% CI 4.1–6.6). Nativity was not significantly associated with teen birth, but speaking Spanish at home was positively associated and immigrating at a later age was negatively associated with teen birth. Overall, these measures of acculturation accounted for 17% (95% CI 8–28%) of the difference in odds of teen birth between Latinas and non-Latina Whites. Higher levels of education among respondents’ parents had differentially protective effects across the racial/ethnic groups. Controlling for disparities in respondents’ parents’ education without changing its differential effects across racial/ethnic groups reduced the odds ratio for Latinas compared to non-Latina Whites by 30% (95% CI 14–60%). Conclusion These findings call into question common assumptions about the protective effect of acculturation on teen fertility and suggest that improving childhood socioeconomic factors among Latinas may decrease teen childbearing.

Validity of insurance information on California birth certificates.

OBJECTIVES This study assessed the validity of health insurance information on California birth certificates. METHODS Insurance information from birth certificates and linked face-to-face interviews was compared for 7428 postpartum women in California. RESULTS There was excellent agreement between insurance information in birth certificate and interview data, especially when capitated plans were grouped with all other private coverage. Analyses using both data sources produced similar estimates of the likelihood of untimely prenatal care according to type of insurance coverage. CONCLUSIONS Birth certificate data including insurance information appear to be an appropriate resource for examining both the extent of coverage for maternity care and associations between prenatal care use and insurance status.