Creation of a community violence exposure scale: Accounting for what, who, where, and how often

Previous research has used the Rasch model, a method for obtaining a continuous scale from dichotomous survey items measuring a single latent construct, to create a scale of community violence exposure. The authors build upon previous work and describe the application of a Rasch model using the continuation ratio model to create an exposure to community violence (ETV) scale including event circumstance information previously shown to modify the impact of experienced events. They compare the Rasch ETV scale to a simpler sum ETV score, and estimate the effect of ETV on child posttraumatic stress symptoms. Incorporating detailed event circumstance information that is grounded in traumatic stress theory may reduce measurement error in the assessment of children's community violence exposure. © 2008 International Society for Traumatic Stress Studies

Violence exposure, a chronic psychosocial stressor, and childhood lung function

OBJECTIVE: Chronic psychosocial stressors, including violence, and neuropsychological and behavioral development in children as well as physiologic alterations that may lead to broader health effects. METHODS: We studied the relationship between violence and childhood lung function in a prospective birth cohort of 313 urban children (age range = 6-7 years). Mothers reported on their child's lifetime exposure to community violence (ETV) and interparental conflict in the home (Conflict Tactics Scale (CTS)) within 1 year of the lung function assessment. RESULTS: In linear regression analyses, adjusting for maternal education, child's age, race, birthweight, tobacco smoke exposure, and medical history, girls in the highest CTS verbal aggression tertile had a 5.5% (95% confidence interval (CI) = -9.6, -1.5) decrease in percent predicted forced expiratory volume (FEV1) and a 5.4% (95% CI = -9.7, -1.1) decrease in forced vital capacity (FVC) compared with girls in the lowest tertile. The CTS verbal aggression subscale was associated with lung function among boys in the same direction, albeit this was not statistically significant. Boys in the highest ETV tertile had a 3.4% (95% CI = -8.0, 1.1) lower FEV1 and 5.3% lower FVC (95% CI = -10.2, -0.4) compared with boys in the lowest tertile. The ETV score was not a significant predictor of girls' lung function. CONCLUSIONS: Interparental conflict, specifically verbal aggression, and ETV were associated with decreased childhood lung function independent of socioeconomic status, tobacco smoke exposure, birthweight, and respiratory illness history. Gender differences were noted based on the type of violence exposure, which may warrant further exploration. Copyright © 2008 by American Psychosomatic Society

A maximum likelihood latent variable regression model for multiple informants

Studies pertaining to childhood psychopathology often incorporate information from multiple sources (or informants). For example, measurement of some factor of particular interest might be collected from parents, teachers as well as the children being studied. We propose a latent variable modeling framework to incorporate multiple informant predictor data. Several related models are presented, and likelihood ratio tests are introduced to formally compare fit. The incorporation of partially observed subjects is addressed under a variety of missing data mechanisms. The methods are motivated by and applied to a study of the association of chronic exposure to violence on asthma in children. Copyright © 2008 John Wiley & Sons, Ltd

Children's exposure to violence and distress symptoms: Influence of caretakers' psychological functioning

Background: Previous studies linking violence exposure to adverse child behavior have typically relied on parental report of child symptoms without accounting for the informant's mental well-being, despite evidence that parental mental health can influence children's mental health and the parent's report of distress symptoms. Purpose: We assess the influence of maternal depression on the violence exposure and child distress association in a subset of the Maternal Infant Smoking Study of East Boston, a prospective birth cohort. Methods: Mothers reported on their children's violence exposure using the Survey of Children's Exposure to Community Violence (ETV) and completed the Checklist of Child Distress Symptoms (CCDS). The children also completed the ETV survey and the self-report version of the CCDS. Linear regression was used to assess the influence of violence exposure on distress symptoms adjusting for potential confounders, first using parent's report of exposure and outcome and a second time using the child's self-report. The mediating effect of maternal depression on the violence and distress association was also tested. Results: Among the 162 children ages 7 to 11, 51% were boys and 43% self-identified as Hispanic. When using child self-report, increased violence exposure was significantly associated with a broader range of distress symptoms (numbness, arousal, intrusion, avoidance subscales) compared to parent reported findings, which were only significantly related to the intrusion and avoidance subscales. Moreover, a significant mediation effect of maternal depression on the violence and distress association was noted only when mother's report of exposure and outcome was used. Conclusion: Considering both parent and child self-report of violence is necessary to obtain a complete picture of violence exposure because parents and children may be offering different, although equally valid information. The influence of maternal depressive symptoms on preadolescent's distress symptoms may be attributed to reporting bias as opposed to more direct effects; thus, the parent's psychological functioning should be taken into consideration when relying on parental report of the child's psychological functioning. © 2010 International Society of Behavioral Medicine