The additive effect of interpregnancy interval and maternal body mass index on pregnancy induced hypertension in the U.S.

OBJECTIVES: The incidence of pregnancy induced hypertension (PIH), one of the most frequent causes of maternal and neonatal morbidity, has increased significantly in the U.S. in last two decades. However, reasons for this rise are not well explored. The interrelationship between interpregnancy interval (IPI), prepregnancy body mass index (BMI), and PIH might play a role in this rise. This study aims to investigate the additive effect of IPI and prepregnancy BMI on PIH. STUDY DESIGN: The 2018 Vital Statistics Natality Data was analyzed (N = 1,046,350) for this cross-sectional study. A combined variable was created using IPI and prepregnancy BMI. Adjusted odds ratios and 95% confidence intervals were generated for IPI, prepregnancy BMI, and PIH using multiple logistic regression models. MAIN OUTCOME MEASURE: PIH was defined using the birth certificate variable 'Gestational hypertension- (PIH, preeclampsia)' in the dataset. RESULTS: IPI and prepregnancy BMI were statistically significantly associated with PIH, both independently and in combination, after adjusting for potential confounders. The largest effect size was observed among women with long IPI and obesity (Adjusted OR = 4.01, 95% CI = 3.84, 4.25). Further, short IPI in combination with underweight BMI was found to be inversely associated with PIH (AOR = 0.64, 95% CI = 0.53, 0.78). CONCLUSIONS: When combined, IPI and BMI are crucial risk factors for PIH. The highest risk of PIH is in women with long IPI in combination with high BMI categories. Healthcare professionals should be cognizant of the additional increased risk of PIH for the overweight and obese women with long IPI.

Pre-Pregnancy Intimate Partner Violence and Short Interbirth Interval: The Role of Insurance Status.

Short interbirth interval (IBI) has serious adverse health consequences, yet has an estimated prevalence of 35% in the United States. Similarly, intimate partner violence (IPV) around time of pregnancy, experienced by approximately 5% of women, is associated with increased risk of poor pregnancy outcomes. IPV might compromise women's decision-making, contributing to unintended pregnancy and short IBI. This study examines the relationship between pre-pregnancy IPV and short IBI, and whether insurance status moderates this relationship among multiparous women who responded to the 2009-2011 Pregnancy Risk Assessment Monitoring System survey (N = 13,675). Pre-pregnancy IPV (yes; no), insurance status (Private insurance; Medicaid/public insurance; no insurance), and short IBI (yes; no) were examined. Insurance status was identified as an effect modifier (p = .03), and maternal age, maternal and paternal education, marital status, and drinking alcohol were identified as potential confounders. Multiple logistic regression analysis stratified by insurance status provided adjusted odds ratios (aOR) with corresponding 95% confidence intervals (CI). Overall, 4.6% of women reported IPV before pregnancy, and 48% had a short IBI. When stratified by insurance status, the odds of short IBI was about 3 times higher among women with no insurance and women on Medicaid/public insurance who reported IPV compared to women who did not report IPV (aOR = 3.36, 95% CI = [1.02, 8.02], and aOR = 2.50, 95% CI = [1.04, 5.92], respectively). There was no observed significant difference in the likelihood of short IBI by experience of IPV among privately insured women. Findings from this study strengthen the evidence that women who experience IPV before pregnancy are significantly more likely to have short IBI compared to women who do not experience pre-pregnancy IPV. Furthermore, the odds of short IBI is highest among women experiencing pre-pregnancy IPV who are uninsured or on Medicaid/public insurance.

Gender differences in the association between mental health status, hypertension, and emergency department visits in the United States.

Hypertension has been found to be elevated in people with mental illness, and this comorbidity may lead to differential emergency department use by gender. Gender differences in this association were assessed using the 2016 Medical Expenditure Panel Survey (n = 20,443). A combined effect variable for mental health and hypertension was created for stratified, multivariable logistic regression analysis. The likelihood of emergency department visits was higher for women compared to men in all categories of the combined effect variable. In particular, regardless of hypertension status, women with poor mental health had 35 percent and 39 percent increased likelihood of emergency department visits compared to men.

Intimate Partner Violence Around the Time of Pregnancy and Utilization of WIC Services.

OBJECTIVES: Intimate partner violence (IPV) around the time of pregnancy is a risk factor for adverse pregnancy and birth outcomes. The supplemental nutrition program for women, infants, and children (WIC), available to low income pregnant women, may provide an opportunity to identify victims of IPV and refer them to services. This cross-sectional study aims to determine whether WIC participants are more likely than non-WIC participants to have reported IPV before or during pregnancy in the United States. METHODS: The 2004-2011 National Pregnancy Risk Assessment Monitoring System (PRAMS) survey (n = 319,689) was analyzed in 2015. Self-reported WIC participation, pre-pregnancy IPV, and IPV during pregnancy were examined. The associations between IPV and WIC participation were analyzed using multiple logistic regression and adjusted odds ratios with corresponding 95% confidence intervals were calculated. Subpopulation analysis was conducted, stratified by race/ethnicity. RESULTS: Nearly half of the study sample received WIC (48.1%), approximately 4% of women reported physical abuse 12 months before their most recent pregnancy, and 3% reported abuse during pregnancy. After adjusting for confounders, women who reported IPV before and during pregnancy had significantly higher odds of WIC utilization compared to women who did not report IPV. However, when stratified by race, the association was only significant for non-Hispanic White women (pre-pregnancy AOR 1.47, 95% CI [1.17, 1.85]; during pregnancy AOR 1.47, 95% CI [1.14, 1.88]). CONCLUSIONS FOR PRACTICE: There is an association between IPV before and during pregnancy and utilization of WIC. Public health professionals and policy makers should be aware of this association and use this opportunity to screen and address the needs of WIC recipients.

The Associations Between Mental Health Status, Hypertension, and Hospital Inpatient Visits in Women in the United States.

BACKGROUND: Poor mental health status is more prevalent in women and may be related to poor hypertension outcomes and increased hospital inpatient visits. This study aims to find the association between mental health status and hypertension in women and the combined effect of mental health status and hypertension on hospital inpatient visits in women in the United States. METHODS: The household component of 2014 Medical Expenditure Panel Surveys (MEPS) was analyzed (N = 9,137). Kessler (K6) scale for mental health status (poor, good/excellent), hypertension (yes, no), and hospital inpatient visits (yes, no) were examined. A combined effect variable for mental health status and hypertension was created. Multiple logistic regression analysis was conducted and adjusted odds ratios (AORs) with corresponding 95% confidence intervals (CIs) were calculated. RESULTS: After adjusting for confounders, women who reported poor mental health had significantly higher odds of hypertension compared to women who reported good/excellent mental health (AOR = 1.39, 95% CI = 1.16, 1.68). Further, women who reported hypertension coupled with poor mental health had higher odds of having hospital inpatient visits compared to women who reported no hypertension coupled with good/excellent mental health in the adjusted analysis (AOR = 3.03, 95% CI = 1.96, 4.69). CONCLUSIONS: There is a significant association between mental health status and hypertension in women. Further, poor mental health status coupled with hypertension leads to increase hospital inpatient visits for women. It is important that health professionals focus on utilizing available screening tools to assess mental health status of women for early detection and to manage the disorder.