Adverse weather conditions and fatal motor vehicle crashes in the United States, 1994-2012.

BACKGROUND: Motor vehicle crashes are a leading cause of injury mortality. Adverse weather and road conditions have the potential to affect the likelihood of motor vehicle fatalities through several pathways. However, there remains a dearth of assessments associating adverse weather conditions to fatal crashes in the United States. We assessed trends in motor vehicle fatalities associated with adverse weather and present spatial variation in fatality rates by state. METHODS: We analyzed the Fatality Analysis Reporting System (FARS) datasets from 1994 to 2012 produced by the National Highway Traffic Safety Administration (NHTSA) that contains reported weather information for each fatal crash. For each year, we estimated the fatal crashes that were associated with adverse weather conditions. We stratified these fatalities by months to examine seasonal patterns. We calculated state-specific rates using annual vehicle miles traveled data for all fatalities and for those related to adverse weather to examine spatial variations in fatality rates. To investigate the role of adverse weather as an independent risk factor for fatal crashes, we calculated odds ratios for known risk factors (e.g., alcohol and drug use, no restraint use, poor driving records, poor light conditions, highway driving) to be reported along with adverse weather. RESULTS: Total and adverse weather-related fatalities decreased over 1994-2012. Adverse weather-related fatalities constituted about 16 % of total fatalities on average over the study period. On average, 65 % of adverse weather-related fatalities happened between November and April, with rain/wet conditions more frequently reported than snow/icy conditions. The spatial distribution of fatalities associated with adverse weather by state was different than the distribution of total fatalities. Involvement of alcohol or drugs, no restraint use, and speeding were less likely to co-occur with fatalities during adverse weather conditions. CONCLUSIONS: While adverse weather is reported for a large number of motor vehicle fatalities for the US, the type of adverse weather and the rate of associated fatality vary geographically. These fatalities may be addressed and potentially prevented by modifying speed limits during inclement weather, improving road surfacing, ice and snow removal, and providing transit alternatives, but the impact of potential interventions requires further research.

A Qualitative Study of Success in Postrelease Federal Inmates With Mental Health Issues.

Considerable research has focused on factors that put individuals at risk for recidivism after their release from incarceration. While recent research has increased the focus on protective factors and resilience, the experiences of people with mental health issues who successfully reintegrate into the community are not well-understood. The present study was conducted to determine which positive factors are implicated in the successful reintegration of people with mental health issues. In-depth, semi-structured interviews were conducted with four male former federal inmates on supervised release in Canada. The interviewees were nominated by staff who knew them to have previously been diagnosed with a mental disorder and perceived them to be doing well in the community. Volunteering and social support were found to be of the greatest importance in their successful outcomes. Additionally, all interviewees had access to mental health services, which likely influenced their success.

Social determinants of health among Canadian inmates.

Purpose International studies indicate that offenders have higher rates of infectious diseases, chronic diseases, and physical disorders relative to the general population. Although social determinants of health have been found to affect the mental health of a population, less information is available regarding the impact of social determinants on physical health, especially among offenders. The purpose of this paper is to examine the relationship between social determinants and the physical health status of federal Canadian offenders. Design/methodology/approach The study included all men admitted to federal institutions between 1 April 2012 and 30 September 2012 ( n=2,273) who consented to the intake health assessment. Logistic regression analyses were used to explore whether age group, Aboriginal ancestry, and each of the individual social determinants significantly predicted a variety of health conditions. Findings The majority of men reported having a physical health condition and had experienced social determinants associated with adverse health outcomes, especially men of Aboriginal ancestry. Two social determinants factors in particular were consistently related to the health of offenders, a history of childhood abuse, and the use of social assistance. Research limitations/implications The study is limited to the use of self-report data. Additionally, the measures of social determinants of health were indicators taken from assessments that provided only rough estimates of the constructs rather than from established measures. Originality/value A better understanding of how these factors affect offenders can inform strategies to address correctional health issues and reduce the impact of chronic conditions through targeted correctional education and intervention programmes.

Chronic Health Conditions Among Incoming Canadian Federally Sentenced Women.

Over a 13-month period, health data on all consecutive incoming Canadian federally sentenced women offenders were collected and analyzed ( N = 280). The most common health conditions cited were back pain, head injury, hepatitis C virus (HCV), and asthma. Rates of chronic health problems were generally similar to those of their male offender counterparts, with the notable exception of HCV, which was higher for women. Aboriginal women offenders had particularly high rates of HCV. The study provides valuable information on the self-reported physical health status of federally sentenced women offenders that can be used as a benchmark to examine health trends over time.

Chronic health conditions reported by male inmates newly admitted to Canadian federal penitentiaries.

BACKGROUND: International health studies have shown that inmates have higher rates of infectious diseases, chronic diseases and psychiatric disorders relative to the general population. We conducted a systematic collection of data on chronic physical health conditions reported by newly admitted inmates in Canadian federal penitentiaries. METHODS: Over a 6-month period from April to September 2012, we collected and analyzed data from a standardized health interview routinely conducted with consenting incoming male inmates (n = 2273). Prevalence rates of health conditions were determined and disaggregated by age (< 50 yr and ≥ 50 yr) and by Aboriginal status. RESULTS: The most common health conditions reported by respondents were head injury (34.1%), back pain (19.3%), asthma (14.7%) and hepatitis C virus (HCV) infection (9.4%). Rates of many health conditions were higher among inmates 50 years of age or older than among younger inmates. Compared with their non-Aboriginal counterparts, Aboriginal inmates had higher rates of head injury and HCV infection. INTERPRETATION: Our study provides a benchmark that can be used to examine health trends within Canada's federal penitentiaries over time and points to subgroups of newly admitted inmates for whom health services may need to be concentrated.

A DFT study of the vibrational spectra of 1-, and 2-nitrotriphenylene.

The infrared (IR) and Raman spectra, and intensities of triphenylene, 1-, and 2-nitrotriphenylene were investigated by the density functional theory (DFT, B3LYP method) with 6-311 +G** basis set. Normal mode assignments are proposed with particular emphasis on the nitro group vibrations. Compared to 2-nitrotriphenylene (2-NTRP) 1-nitrotriphenylene (1-NTRP) is predicted to show asymmetric nitro stretches at higher frequencies. Through the vibrational study, the structure-spectroscopic relationships of these nitro polycyclic aromatic hydrocarbons (nitro-PAHs) are made, and possible insights into their differential mutagenic potencies correlated. The geometrical distortions of the TRP structure upon nitro group substitution and correlations between structural parameters and vibrational data as well as structure-function relationships related to the mutagenicity of this important class of polycyclic aromatic hydrocarbons are discussed.