background: the fourth survey of the surveillance system named ‘‘childhood and adolescence surveillance and prevention of adult non-communicable disease’’ (caspian–iv study), was conducted among a national representative sample of iranian students. this paper describes the methods and early findings of this survey.  methods: this nationwide school-based study was conducted in 31 provinces of ir...

Fuzzy risk analysis, as a powerful tool to address uncertain information, can provide an appropriate method for risk analysis. However, the previous fuzzy risk analysis methods still have some weaknesses. To overcome the weaknesses of existing fuzzy risk analysis methods, a novel method for ranking generalized fuzzy numbers is proposed for addressing fuzzy risk analysis problems. In the propose...

[no abstract available]

background and aim: hepatitis b is a major health problem in the world and also in our country, iran. presence in war zones is among the most important risk factors for developing hepatitis b. this study was conducted to compare liver enzymes variations and hepatitis b risk factors among military and civilian chronic carriers of hepatitis b. methods: this was a cross-sectional descriptive-analy...

conclusions the potential risk and prevalence of ulmsds among computer users of medical sciences university were less than those of technical-engineering university due to following ergonomic principles. rula found to be a proper method for the assessment of the ergonomic risk factors of the ulmsds in order to prevent such disorders. background along with widespread use of computers, work-relat...

conclusions independent variables such as sex, age, hdl-c, sys-bp, bmi, smoking, cholesterol and hs-crp were considered as influencing variables, and education, marital status, disease history, height, waist circumference, diastolic blood pressure and low density lipoprotein were removed from the models. background cardiovascular disease is considered as one of the most common diseases, causing...

introduction and aims: considering high prevalence of hepatitis b virus (hbv) in iran and need for its prevention, determination of causes and risk factors can help health policy makers in control of disease. materials and methods: all blood donors of tehran city from april 1997 to march 2000 were studied in a case control design. hbsag positive donors who were referred to hepatitis consultatio...

background: autism spectrum disorder (asd) is a neurological disorder typically appearing before the age of three . the exact cause of autism remains uncertain, and several factors may be involved in its onset: genetic factors and possible environmental factors. the aim of this study was to assess the correlates of autism in the lebanese population. methods: we investigated the association of a...

results males (8,593 patients) were more likely to have eye trauma than females (1,262). the mean age for the outpatient cases was 20.3 ± 16.39 years and for the inpatient cases it was 22.7 ± 18.95 years. the workplace was the most common site for trauma and the cornea was the most reported anatomically injured site. for those patients who had not used safety and protection equipment, 93.1% wer...

background: escherichia coli is one of the most important pathogens which could be transmitted by milk. the main aim of the present study was to assess risk factors related to the occurrence of e. coli in fluid milk marketed in chittagong, bangladesh. methods: totally, 169 milk samples were collected from different entry points in chittagong, bangladesh; and also, 17 samples were directly colle...