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The relationship between familial deaths and one's own mortality among Black Americans
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Familial loss increases midlife mortality risk among Black Americans
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Research
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Selected Research
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The reproduction of child maltreatment: An examination of adolescent problem behavior, substance use, and precocious transitions in the link between victimization and perpetration
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Growing evidence suggests that maltreatment is reproduced across generations as victims of maltreatment are at an increased risk for maltreatment perpetration. Unfortunately, little information about mediating pathways exists to provide an explanation for why maltreatment begets maltreatment. We use the number of types of maltreatment experienced to predict later maltreatment perpetration and then examine two developmental pathways that may serve as bridges between maltreatment victimization and perpetration: adolescent problem behaviors and precocious transitions to adulthood. With prospective, longitudinal data from the Rochester Youth Development Study, we assess the relevance of these pathways for the number of maltreatment experiences as well as the number of maltreatment victimization experiences by developmental period (i.e., childhood and adolescence). Our results demonstrate a significant relationship between maltreatment victimization and maltreatment perpetration. Adolescent delinquency and two precocious transitions, dropping out of school and independent living, as well as the accumulation of precocious transitions and problem behaviors, serve as mediators of this intergenerational relationship. Furthermore, the relationship between the number of types of maltreatment and subsequent perpetration is primarily driven by experiences of maltreatment during adolescence. We discuss the implications of these results and set an agenda for the development of programs and policies to interrupt the cycle of maltreatment.
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Retired Persons
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Terence Thornberry, Ph.D.
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Terence Thornberry Publications
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How Early Is Too Early? Identification of Elevated, Persistent Problem Behavior in Childhood
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We inquire how early in childhood children most at risk for problematic patterns of internalizing and externalizing behaviors can be accurately classified. Yearly measures of anxiety/depressive symptoms and aggressive behaviors (ages 6–13; n = 334), respectively, are used to identify behavioral trajectories. We then assess the degree to which limited spans of yearly information allow for the correct classification into the elevated, persistent pattern of the problem behavior, identified theoretically and empirically as high-risk and most in need of intervention. The true positive rate (sensitivity) is below 70% for anxiety/depressive symptoms and aggressive behaviors using behavioral information through ages 6 and 7. Conversely, by age 9, over 90% of the high-risk individuals are correctly classified (i.e., sensitivity) for anxiety/depressive symptoms, but this threshold is not met until age 12 for aggressive behaviors. Notably, the false positive rate of classification for both high-risk problem behaviors is consistently low using each limited age span of data (< 5%). These results suggest that correct classification into highest risk groups of childhood problem behavior is limited using behavioral information observed at early ages. Prevention programming targeting those who will display persistent, elevated levels of problem behavior should be cognizant of the degree of misclassification and how this varies with the accumulation of behavioral information. Continuous assessment of problem behaviors is needed throughout childhood in order to continually identify high-risk individuals most in need of intervention as behavior patterns are sufficiently realized.
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Retired Persons
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Terence Thornberry, Ph.D.
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Terence Thornberry Publications
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Factor Models and Time-Varying Parameter Framework for Forecasting Exchange Rates and Inflation: A Survey
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A survey of models used for forecasting exchange rates and inflation reveals that the factor‐based and time‐varying parameter or state space models generate superior forecasts relative to all other models. This survey also finds that models based on Taylor rule and portfolio balance theory have moderate predictive power for forecasting exchange rates. The evidence on the use of Bayesian Model Averaging approach in forecasting exchange rates reveals limited predictive power, but strong support for forecasting inflation. Overall, the evidence overwhelmingly points to the context of the forecasts, relevance of the historical data, data transformation, choice of the benchmark, selected time horizons, sample period and forecast evaluation methods as the crucial elements in selecting forecasting models for exchange rate and inflation.
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MPRC People
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Manouchehr (Mitch) Mokhtari, Ph.D.
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Mitch Mokhtari Publications
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“No [Right] Way to Be a Black Woman”: Exploring Gendered Racial Socialization Among Black Women
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Using the theoretical lenses of intersectionality and racial-ethnic socialization, we conducted a focus group study with 29 Black women. We analyzed transcripts via a grounded theory approach for the sources of messages about skin color and hair and for participants’ responses to these messages. Family members were the primary source of messages about skin color and hair. Peers and the media also communicated such messages. Messages ranged from endorsement of Western standards of beauty to an embrace of darker skin colors and natural hair texture. Rather than serving as passive recipients of messages, participants sifted through and reconciled messages with varying degrees of resolution. Their accounts reflected their intersectional experiences as Black women representing a variety of physical attributes. We discuss the influence of these physical attributes on their individual racial-gender identity development in light of a second burgeoning Black hair movement in the United States, that embraces Black natural hair. Findings may help families and others build understanding of, and increase sensitivity toward, the intra- and interpersonal implications of colorism for Black women. Findings may also inform institutional policies (e.g., school, work) and practices to reduce barriers and improve consequences for the Black women navigating these settings.
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MPRC People
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Mia Smith-Bynum, Ph.D.
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Mia Smith Bynum Publications
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Exposure to Particulate Matter and Adverse Birth Outcomes: A Comprehensive Review and Meta Analysis.
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Increasing number of studies have investigated the impact of maternal exposure to air pollution during pregnancy and adverse birth outcomes, particularly low birth weight (LBW, <2,500 g at birth) and preterm birth (PTB, <37 completed weeks of gestation). We performed a comprehensive review of the peer-reviewed literature and a meta-analysis to quantify the association between maternal exposure to particulate matter with aerodynamic diameter 2.5 and 10 μm (PM 2.5 and PM 10 ) during pregnancy and the risk of LBW and PTB. We identified 20 peer-reviewed articles providing quantitative estimate of exposure and outcome that met our selection criteria. There was significant heterogeneity between studies, particularly for findings related to PM 10 exposure (LBW, I -squared 54%, p = 0.01; PTB, I -squared = 73%, p < 0.01). Results from random-effect meta-analysis suggested a 9% increase in risk of LBW associated with a 10-μg/m 3 increase in PM 2.5 (combined odds ratios (OR), 1.09; 95% confidence interval (CI), 0.90–1.32), but our 95% CI included the null value. We estimated a 15% increase in risk of PTB for each 10-μg/m 3 increase in PM 2.5 (combined OR, 1.15; CI, 1.14–1.16). The magnitude of risk associated with PM 10 exposure was smaller (2% per 10-μg/m 3 increase) and similar in size for both LBW and PTB, neither reaching formal statistical significance. We observed no significant publication bias, with p > 0.05 based on both Begg's and Egger's bias tests. Our results suggest that maternal exposure to PM, particularly PM 2.5 may have adverse effect on birth outcomes. Additional mechanistic studies are needed to understand the underlying mechanisms for this association.
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MPRC People
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Amir Sapkota, Ph.D.
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Amir Sapkota Publications
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Pharmaceuticals, herbicides, and disinfectants in agricultural water sources
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Agricultural water withdrawals account for the largest proportion of global freshwater use. Increasing municipal water demands and droughts are straining agricultural water supplies. Therefore, alternative solutions to agricultural water crises are urgently needed, including the use of nontraditional water sources such as advanced treated wastewater or reclaimed water, brackish water, return flows, and effluent from produce processing facilities. However, it is critical to ensure that such usage does not compromise soil, crop, and public health. Here, we characterized five different nontraditional water types (n = 357 samples) for the presence of pharmaceuticals, herbicides, and disinfectants using ultra-high-pressure liquid chromatography tandem mass spectrometry based method (UPLC-MS/MS). We then evaluated whether the levels of these contaminants were influenced by season. The highest level of herbicides (atrazine) was detected in untreated pond water (median concentration 135.9 ng/L). Reclaimed water had the highest levels of antibiotics and stimulants including azithromycin (215 ng/L), sulfamethoxazole (232.1 ng/L), and caffeine (89.4 ng/L). Produce processing plant water also tended to have high levels of atrazine (102.7 ng/L) and ciprofloxacin (80.1 ng/L). In addition, we observed seasonal variability across water types, with the highest atrazine concentrations observed during summer months, while the highest median azithromycin concentrations were observed in reclaimed water during the winter season. Further studies are needed to evaluate if economically feasible on-farm water treatment technologies can effectively remove such contaminants from nontraditional irrigation water sources.
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MPRC People
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Amir Sapkota, Ph.D.
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Amir Sapkota Publications
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Antibiotic and herbicide concentrations in household greywater reuse systems and pond water used for food crop irrigation: West Bank, Palestinian Territories
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Greywater is increasingly treated and reused for agricultural irrigation in off-grid communities in the Middle East and other water scarce regions of the world. However, there is a dearth of data regarding levels of antibiotics and herbicides in off-grid greywater treatment systems. To address this knowledge gap, we evaluated levels of these contaminants in two types of greywater treatment systems on four farms in the West Bank, Palestinian Territories. Samples of household greywater (influent, n = 23), treated greywater effluent intended for agricultural irrigation (n = 23) and pumped groundwater held in irrigation water ponds (n = 12) were collected from October 2017 to June 2018. Samples were analyzed using high performance liquid chromatography tandem mass spectrometry (LC-MS/MS) for the following antibiotics and herbicides: alachlor, ampicillin, atrazine, azithromycin, ciprofloxacin, erythromycin, linezolid, oxacillin, oxolinic acid, penicillin G, pipemidic acid, sulfamethoxazole, triclocarban, tetracycline, triflualin, and vancomycin. All tested antibiotics and herbicides were detected in greywater influent samples at concentrations ranging from 1.3 to 1592.9 ng/L and 3.1–22.4 ng/L, respectively. When comparing influent to effluent concentrations, removal was observed for azithromycin, alachlor, linezolid, oxacillin, penicillin G, pipemidic acid, sulfamethoxazole, triclocarban, and vancomycin. Removal was not observed for atrazine, ciprofloxacin, erythromycin, oxolinic acid, tetracycline, and trifluralin. Pond water also contained the majority of tested contaminants, but at generally lower concentrations. To our knowledge, this is the first description of an extensive array of antibiotics and herbicides detected in household greywater from off-grid treatment systems.
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MPRC People
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Amir Sapkota, Ph.D.
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Amir Sapkota Publications
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Using IHDS Data to Explore Inequality in India
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Sonalde Desai and Reeve Vanneman study the "Determinants of Maternal and Child Health in India"
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Research
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Selected Research
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Intergenerational Parenting and Health
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MPRC Associate Terrence Thornberry is studying Intergenerational Health using the Rochester Youth Development Study
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Selected Research