نتایج جستجو برای: Relative risk

تعداد نتایج: 1281378  

Journal: :health scope 0
aezam mohammadi shiraz university of medical sciences, shiraz, ir iran abooalfazl azhdarpoor department of environmental health, school of health, shiraz university of medical sciences, shiraz, ir iran; department of environmental health, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7137251001, fax: +98-7137260225 abbas shahsavani department of environmental health, school of health, shahid beheshti university of medical sciences, tehran, ir iran hamidreza tabatabaee department of epidemiology, school of health, shiraz university of medical sciences, shiraz, ir iran

conclusions according to the results obtained, the largest numbers of deaths and illnesses were due to the high average pm10 concentration or an increase in the number of days of exposure to this pollutant. background particulate matters have harmful effects on human health and can intensify mortality and disease. objectives the purpose of this study was to evaluate the health impacts of partic...

Journal: :journal of research in health sciences 0
sayyedeh sara azimi davood khalili farzad hadaegh parvin yavari yadollah mehrabi fereidoun azizi

background: population attributable fraction (paf) is one of the most practical measures for estimating the burden of risk factors with some challenges in its calculation. cardiovascular disease (cvd) is the first cause of death worldwide and the estimation of accurate pafs for cvd risk factors is of great importance in conducting preventive strategies. our aim was to estimate the pafs of cvd r...

Journal: :American journal of epidemiology 1999
J J Weinkam W L Rosenbaum T D Sterling

The authors extend previous results on nondifferential exposure misclassification to the situation in which multilevel exposure and covariables are both misclassified. They show that if misclassification is nondifferential and the predictive value matrices are independent of other predictor variables it is possible to recover the true relative risks as a function of the biased estimates and the...

Journal: :Accident; analysis and prevention 2008
E Lenguerrand J-L Martin M Chiron E Lagarde B Laumon

OBJECTIVES To assess professional status (PS) differences in the risk of road crash involvement (RCI) (irrespective of crash severity), and to examine the underlying mechanism by evaluating the role of exposure to road risk (ERR). METHOD A total of 15,271 subjects selected from the French GAZEL cohort were studied. A proportional hazard model for recurrent events was used to calculate the rel...

2014
Vasiliy S Usenko Sergey N Svirin Yan N Shchekaturov Eduard D Ponarin

BACKGROUND Many studies have investigated the impact of a wide range of social events on suicide-related behaviour. However, these studies have predominantly examined national events. The aim of this study is to provide a statistical evaluation of the relationship between mass gatherings in some relatively small urban sub-populations and the general suicide rates of a major city. METHODS The ...

Journal: :Journal of the Royal Army Medical Corps 1991
L P Lillywhite

A retrospective study of 34,236 consecutive static line parachute descents by trained parachutists, in which 379 were injured, is described. Injury rates associated with extrinsic factors were compared and then analyzed using logistic regression. A table describing the association with extrinsic factors, with relative risks, is at Annex A. The overall injury rate was 1.11% (1.11 injured per 100...

Journal: :health scope 0
elahe zallaghi khouzestan sciences and research islamic azad university, ahvaz, ir iran gholamreza goudarzi environmental technologies research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran sahar geravandi islamic azad university, tehran medical sciences branch, tehran, ir iran mohammad javad mohammadi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-9355439707, fax: +98-6113361544

conclusions cardiovascular and respiratory problems mortality, as well as referrals to hospitals due to such diseases, was increased since 2010 till 2012. in 2013, however, the death toll was less than what had been in 2012, in spite of more concentration. the reason is that ahvaz had 160 days with concentration more than 400 μg/m3 in 2013 whereas this was 198 days in 2012. also, every 10 μg.m-...

Journal: :apadana journal of clinical research 2013
mohammad javad mohammadi gholamreza goudarzi abdolkazem neisi kamran ahmadiangali hamed saki

background & objectives:airq software proved to be a valid and reliable tool to estimate the potential short term effects of air pollution. in this study the airq2.2.3 model was used to evaluate adverse health effects caused by nitrogen dioxide(no2) exposure in ahvaz during 2009. materials & methods:the airq,developed by the world health organization (who) to predict health endpoints a...

2017
Hui-Chieh Yu Ni-Yu Su Jing-Yang Huang Shiuan-Shinn Lee Yu-Chao Chang

Periodontitis is one of the most prevalent oral diseases. In this study, we probed the nationwide registered database to assess the time trends of prevalence of periodontitis in Taiwan.A retrospective study was conducted to analyze the registered database compiled by the National Health Insurance provided by the Department of Health, Taiwan, from 1997 to December 2013.We found that the prevalen...

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