Maternal morbidity associated with violence and maltreatment from husbands and in-laws: findings from Indian slum communities.

BackgroundIntimate partner violence (IPV) victimization is linked to a broad range of negative maternal health outcomes. However, it is unclear whether IPV is directly related to poor maternal outcomes or whether IPV is a marker for other forms of chronic, mundane maltreatment of women that stem from the culture of gender inequity that also gives rise to IPV. To determine the prevalence of non-violent forms of gender-based household maltreatment by husbands and in-laws (GBHM), and violence from in-laws (ILV) and husbands (IPV) against women during the peripregnancy period (during and in the year prior to pregnancy); to assess relative associations of GBHM, ILV and IPV with maternal health.MethodsCross-sectional data were collected from women <6 months postpartum (n = 1,039, ages 15-35 years) seeking child immunization in Mumbai, India. Associations of IPV, ILV and GBHM during the peripregnancy period with maternal health (prenatal care in first trimester, no weight gain, pain during intercourse, high blood pressure, vaginal bleeding, premature rupture of membranes, premature birth) were evaluated.ResultsOne in three women (34.0 %) reported IPV, 4.8 % reported ILV, and 48.5 % reported GBHM during the peripregnancy period. After adjusting for other forms of abuse, IPV related to pain during intercourse (AOR = 1.79); ILV related to not receiving first trimester antenatal care (AOR = 0.49), and GBHM remained associated with premature rupture of membranes (AOR = 2.28), pain during intercourse (AOR = 1.60), and vaginal bleeding (AOR = 1.80).ConclusionAfter adjusting for ILV and IPV, peripregnancy GBHM remained significantly associated with multiple forms of maternal morbidity, suggesting that GBHM is a prevalent and reliable indicator of maternal health risk

Associations between recent intimate partner violence and receipt and quality of perinatal health services in Uttar Pradesh

Background India suffers some of the highest maternal and neonatal mortality rates in the world. Intimate partner violence (IPV) can be a barrier to utilization of perinatal care, and has been associated with poor maternal and neonatal health outcomes. However, studies that assess the relationship between IPV and perinatal health care often focus solely on receipt of services, and not the quality of the services received. Methods and findings Data were collected in 2016–2017 from a representative sample of women (15-49yrs) in Uttar Pradesh, India who had given birth within the previous 12 months (N = 5020), including use of perinatal health services and past 12 months experiences of physical and sexual IPV. Multivariate logistic regression models assessed whether physical or sexual IPV were associated with perinatal health service utilization and quality. Reports of IPV were not associated with odds of receiving antenatal care or a health worker home visit during the third trimester, but physical IPV was associated with fewer diagnostic tests during antenatal visits (beta = -0.30), and fewer health topics covered during home visits (beta = -0.44). Recent physical and recent sexual IPV were both associated with decreased odds of institutional delivery (physical IPV AOR 0.65; sexual IPV AOR 0.61), and recent sexual IPV was associated with leaving a delivery facility earlier than recommended (AOR = 1.87). Neither form of IPV was associated with receipt of a postnatal home visit, but recent physical IPV was associated with fewer health topics discussed during such visits (beta = -0.26). Conclusions In this study, reduced quantity and quality of perinatal health care were associated with recent IPV experiences. In cases where IPV was not related to care receipt, IPV remained associated with diminished care quality. Additional study to understand the mechanisms underlying associations between IPV and care qualities is required to inform health services

Spatial analysis of individual- and village-level sociodemographic characteristics associated with age at marriage among married adolescents in rural Niger.

BACKGROUND: Niger has the highest prevalence of child marriage in the world. While child marriage in Niger is clearly normative in the sense that it is commonly practiced, the social and contextual factors that contribute to it are still unclear. METHODS: Here, we tested the importance of village-level factors as predictors of young age at marriage for a group of married adolescent girls (N = 1031) in the Dosso district of rural Niger, using multi-level and geographic analyses. We aggregated significant individual level factors to determine whether, independent of a girl's own sociodemographic characteristics, the impact of each factor is associated at the village level. Finally, we tested for spatial dependence and heterogeneity in examining whether the village-level associations we find with age at marriage differ geographically. RESULTS: The mean age of marriage for girls in our study was 14.20 years (SD 1.8). Our statistical results are consistent with other literature suggesting that education is associated with delayed marriage, even among adolescent girls. Younger ages at marriage are also associated with a greater age difference between spouses and with a greater likelihood of women being engaged in agricultural work. Consistent with results at the individual level, at the village level we found that the proportion of girls who do agricultural work and the mean age difference between spouses were both predictive of a lower age at marriage for individual girls. Finally, mapping age at marriage at the village level revealed that there is geographical variation in age at marriage, with a cluster of hot spots in the Hausa-dominated eastern area where age at marriage is particularly low and a cluster of cold spots in the Zarma-dominated western areas where age at marriage is relatively high. CONCLUSIONS: Our findings suggest that large-scale approaches to eliminating child marriage in these communities may be less successful if they do not take into consideration geographically and socially determined contextual factors at the village level

Movement Patterns for a Critically Endangered Species, the Leatherback Turtle (Dermochelys coriacea), Linked to Foraging Success and Population Status

Foraging success for pelagic vertebrates may be revealed by horizontal and vertical movement patterns. We show markedly different patterns for leatherback turtles in the North Atlantic versus Eastern Pacific, which feed on gelatinous zooplankton that are only occasionally found in high densities. In the Atlantic, travel speed was characterized by two modes, indicative of high foraging success at low speeds (<15 km d−1) and transit at high speeds (20–45 km d−1). Only a single mode was evident in the Pacific, which occurred at speeds of 21 km d−1 indicative of transit. The mean dive depth was more variable in relation to latitude but closer to the mean annual depth of the thermocline and nutricline for North Atlantic than Eastern Pacific turtles. The most parsimonious explanation for these findings is that Eastern Pacific turtles rarely achieve high foraging success. This is the first support for foraging behaviour differences between populations of this critically endangered species and suggests that longer periods searching for prey may be hindering population recovery in the Pacific while aiding population maintenance in the Atlantic

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals &lt;1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Relationship Factors Associated With Early Adolescent Dating Violence Victimization and Perpetration Among Latinx Youth in an Agricultural Community

Latinx early adolescents within the United States are particularly vulnerable to dating violence; yet, little research has examined early dating experiences and violence outside large urban settings. Latinxs, in particular, may experience a unique window of opportunity for dating violence (DV) prevention during early adolescence, based on their trends in risk behavior over the adolescent period. This study extends the current research on dating violence by examining a highly understudied population, Latinx early adolescent girls and boys residing in an agricultural community, by assessing victimization and perpetration, and examining interpersonal-level factors as potential risk and protective factors for violence. Using data from a prospective cohort study of Latinx adolescents with relationship experience (past six months) (N = 296; girls: n = 147; boys: n = 149; mean age: 13.8), we assessed the association between dating relationship characteristics and dating violence victimization and perpetration using modified-Poisson regression models with robust standard errors stratified by gender. In multivariable analyses, we found that girls with gang-affiliated partners, partner-related withdrawal from friends, and girls who had used drugs or alcohol with a partner experienced greater risk for dating violence. Additionally, holding beliefs supportive of female sexual naivete and engaging in and communicating about sexual activity were associated with victimization among girls. No significant associations were found among boys. Findings affirm the need for multilevel DV prevention programming that starts in middle school and addresses social isolation, gang exposure, and traditional Latinx gender-norm beliefs regarding marianismo. These findings underscore the imperative to coordinate dating and gang violence prevention efforts by addressing common co-occurring interpersonal and environmental risk factors, including social isolation and culturally-specific traditional beliefs. Such factors could also assist providers, families, and peers in early identification of Latinx early adolescents at risk for DV, especially in rural contexts where resources are often limited

Multi-Level Protective and Risk Factors Longitudinally Associated with Dating Violence Perpetration among Non-Urban Mexican-American Adolescents

To assess the longitudinal relationship between individual and interpersonal risk and protective factors and dating violence perpetration among non-urban Mexican-American youth. With data from a 24-month prospective cohort study (2015&ndash;2019; baseline recruitment spanned from 2015&ndash;2017; four follow-up interviews every 6 months) of Mexican-American youth (8th grade at baseline) living in an agricultural region (Salinas, California), we utilized multivariable modified Poisson general estimating equations stratified by gender (n = 489) to assess the relationships of religiosity, non-violent problem-solving skills, school connectedness, family cohesion, and bullying victimization with dating violence perpetration. Among girls, but not boys, non-violent problem-solving skills [adjusted relative risk (ARR): 0.7; 95% confidence interval (CI): 0.56&ndash;0.99] and family cohesion (ARR: 0.7; 95% CI: 0.48&ndash;0.97) were negatively associated with dating violence perpetration, and frequency of bullying victimization was positively associated (ARR: 1.9; 95% CI: 1.37&ndash;2.59). Non-urban Mexican-American female youth may benefit from multi-level dating violence prevention that strengthens family cohesion by building upon the Mexican-American cultural value of familismo and addresses common risk factors for bullying and dating violence perpetration. Additionally, results affirm etiological differences between girls&rsquo; and boys&rsquo; dating violence perpetration and the need for improved measurement