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Using Multivariate Statistics

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Applied Longitudinal Data Analysis Modeling Change And Event Occurrence

According to WHO, the permissible limit of arsenic till 1993 was 0.05 mg. /L of drinking water. In 1993, WHO modified the maximum level and brought it down to 0.01 mg./L. According to the report of School of Environment Studies of Jadavpur University (1992-1993), West Bengal has 6 districts, affected by arsenic contamination of ground water. The present paper attempts to find out the vulnerability and impact of arsenic on human being. A detailed survey was conducted at Dahapara village of Murshidabad district to assess the present condition of the area giving emphasis on the identification of sources of arsenic pollution.

Review of Research.

Transportation Research Part F: Traffic Psychology and Behaviour

A review on the effects of physical built environment attributes on enhancing walking and cycling activity levels within residential neighborhoods

Urban regions experience high population growth rates and possess distinct characteristics regarding mobility, mode of transport, road environments and road safety plans. Urban areas are prioritized in the Norwegian Transport Plan’s strategies for transport and by implementation of General Urban Environmental Agreements with casualty reduction targets. The study examines possibilities and limitations in developing and analysing urban trends, forecasts and scenarios for killed and seriously injured road users in Norway. The Oslo and Trondheim regions are case studies for the period 1998–2025. Police reports of killed and seriously injured casualties 1998–2012 in the regions (NOslo = 1801, NTrondheim = 790) formed the basis of the analyses. The mean injury rate for Oslo region was 10.8 per 100,000 pop. per year for the period 2008–2012, whereas the corresponding figure for Trondheim was 15.7, the highest among all large urban areas. The road authorities’ accident targets towards 2025, initiated by the National Plan of Action for Road Safety are decomposed into regional units. On the basis of the two regions’ statistics relating to road casualties, the applied principle of equal proportional share indicates a 40% injury reduction towards 2025. Exponential models, ARIMA models, negative binomial regression, and scenario approaches were employed to estimate possible trends and changes in casualties in the studied urban regions. These models formed a framework to reveal critical assumptions, sensitivity, uncertainties, and realism in the road authorities’ strategies for casualty reduction targets and for trend extrapolations and predictions. The analyses consider sources of critical conditions to rate the magnitude of the following conditions: (1) the trend towards the prevailing road safety status (casualty numbers, casualty rate levels, and stability) problematized by small numbers and random variation; (2) the exposure effects of urban road network composition and urban–rural mix; (3) the exposure effect of population growth towards 2025, change in population, and risk-exposed road users; and (4) the exposure effect of shifts in mode of transport, with uncertainties regarding non-linear relationships between casualty numbers and exposure measures. Some effects of exogenous road safety measures of all types are considered, such as diminishing return and reduced sum effects of measures. One conclusion is that the various model approaches for the two urban regions demonstrate substantial uncertainties in trend forecasts. The models identify critical factors for fulfilling safety plans and reductions in the numbers of seriously injured casualties, even in the near future. The approaches indicate however that without strengthened safety strategies, the authorities’ 40% casualty reduction target most probably will not be achieved.

/pdf/critical-approaches-to-road-injury-trends-forecasts-and-47v90sk51j.pdf

Critical approaches to road injury trends, forecasts and scenarios: two urban cases in Norway

Predictors of Crash Among Iranian Drivers; An Exploratory Analysis of Developed Driver Behavior Questionnaire

We examined the prevalence of suicidal ideation (SI) among inpatients with substance use disorders (SUD) and investigated the association between SI and demographic (age, education, gender) and clinical factors (SUD, psychiatric disorders, anxiety/depression symptoms, substance use onset age). We collected medical record data including types of ICD-10 SUD and psychiatric diagnoses (i.e. mood: F30-39; anxiety: F40-48; personality: F60-F60.9; F61.0; F62; ADHD: F90-F90.9) and patient-reported data from 563 patients admitted to inpatient SUD treatment. Lifetime SI was measured by one question from the Addiction Severity Index (ASI). Gender differences in SI rates were examined using Chi-square tests. To determine variables that were uniquely associated with SI we conducted hierarchical regression analyses. The overall prevalence of SI was 50%, and it occurred more frequently among females (61.9%) than males (45.4%). SI was associated with female gender, younger age of substance use onset, mood and personality disorders, and higher anxiety/depression symptoms. Male gender accounted for the significant association between younger age of onset and SI. Diagnostic information on mood and personality disorders, and screening of patient-reported anxiety/depression symptoms at treatment intake may be useful for clinicians in identifying and providing personalized treatment for SUD inpatients who are at increased risk of SI. 

https://doi.org/10.1016/j.psychres.2022.114848

Suicidal ideation among inpatients with substance use disorders: Prevalence, correlates and gender differences

Analysis of pedestrians' behaviour: A segmentation approach based on latent variables.

The purpose of this study was to assess what is associated with health service satisfaction among adults with a substance use disorder receiving services provided within different municipalities in Norway. An additional aim was to examine demographic and municipality characteristics, mental health, and types of substance use associated with health service satisfaction. A cross-sectional partial explorative study was executed in 2017 among 491 service users with substance use disorders from 20 randomly selected municipalities. The sample consisted of 70% males. The sample majority were single and unemployed, and their main sources of healthcare were the general practitioner (78%), The Norwegian Labor and Welfare Administration (72%), and addiction counsellors (62%). Overall satisfaction was negatively associated with age, size of municipality, Global Severity Index (GSI) and illicit substance use during the last 12 months. Satisfaction with practical help, such as housing, economy, work and education, was negatively associated with GSI and positively associated with onset of first alcohol intoxication. Satisfaction with personnel was positively associated with onset of first alcohol intoxication and negatively associated with municipality size, GSI and illicit use the last 12 months. The results showed that more than half of the respondents (54%) to a large or great extent were satisfied with the overall services provided. The services they were less satisfied with were related to housing, economy, getting started with exercise and establishing a social network. The results show areas associated with satisfaction and domains where the municipalities can improve their services to meet the users’ needs and increase service satisfaction.

/pdf/assessing-health-service-satisfaction-among-users-with-2e1e98jjr2.pdf

Trond Nordfjærn

Papers

Critical approaches to road injury trends, forecasts and scenarios: two urban cases in Norway

Predictors of Crash Among Iranian Drivers; An Exploratory Analysis of Developed Driver Behavior Questionnaire

Suicidal ideation among inpatients with substance use disorders: Prevalence, correlates and gender differences

Analysis of pedestrians' behaviour: A segmentation approach based on latent variables.

Assessing health service satisfaction among users with substance use disorders within the municipalities in Norway.