نتایج جستجو برای: Cross– Sectional study

تعداد نتایج: 4222057  

Journal: :international journal of epidemiologic research 2015
parivash rahimpour ataollah hashemian azadeh direkvand-moghadam ashraf direkvand-moghadam

background and aims: loneliness typically includes anxious feelings. it is particularly relevant to adolescence period. it has effect on physical and mental health. the present study aimed to identify the predictive factors of loneliness among high schools female students.methods: a cross –sectional survey was carried out among high schools female students in ilam during the academic year 2014-...

Journal: :journal of current ophthalmology 0
هادی استادی مقدم hadi ostadimoghaddam عباسعلی یکتا abbasali yekta حسن هاشمی hassan hashemi جواد هرویان javad heravian اکبر درخشان akbar derakhshan الهام عزیزی elham azizi رضا نوروزی راد

purpose : to determine the prevalence of the uncorrected refractive errors in bojnourd students methods : in a cross-sectional study, the samples were selected proportionate to the population of the schools using stratified randomized cluster sampling. the target population was the primary and junior high school students of the city of bojnourd. visual acuity (va) (snellen chart) and cycloplegi...

Journal: :acta medica iranica 0
zinat nadia hatmi department of community medicine, tehran university of medical sciences, tehran ,iran. mitra mahdavi-mazdeh department of nephrology, tehran university of medical sciences, tehran ,iran. seyed saeid hashemi-nazari health city office, tehran municipality, tehran ,iran. ebrahim hajighasemi health city office, tehran municipality, tehran ,iran. behnaz nozari research center of iranian tissue bank, tehran, iran. azita mahdavi national behzisti organization, tehran, iran.

more than eighty percent of patients with coronary heart diseases (chd) have conventional risk factors. prevalence of well known risk factors seems to show a different pattern in younger patients and individual above 55 years. to evaluate the pattern of conventional chd risk factors in healthy individuals in two different age groups. a large scale population based survey of 31999 individuals fr...

Journal: :journal of current ophthalmology 0
حسن هاشمی hassan hashemi مهدی خبازخوب mehdi khabazkhoob عباسعلی یکتا abbasali yekta کاظم محمد kazem mohammad اکبر فتوحی akbar fotouhi

purpose : to determine the distribution of iris colors in the population of tehran and to assess possible associations between iris color and ocular disorder methods : through a stratified random cluster sampling approach, 160 clusters were selected in different municipality districts of tehran, and the approached households were invited to a clinic. after the initial interview, all participant...

Journal: :international journal of epidemiologic research 2015
safa seidpour eskandar gholamy- parizad abdolhossein poornajaf ashraf direkvand-moghadam ali delpisheh

background& aims: the mortality rate for breast cancer is directly related to the stage of disease at diagnosis. the present study aimed to determine the influencing factors on knowledge, attitudes, and practices of women regarding breast cancer and its screening methods.material & methods: in a cross- sectional study, evaluated 383 women referring health centers of ilam. sampling was d...

Journal: :iranian red crescent medical journal 0
mohammadreza mehmandar naja research center of traffic police of iran, tehran, ir iran hamid soori safety promotion and injury prevention research center, shahid beheshti university, tehran, ir iran mosa amiri naja research center of traffic police of iran, tehran, ir iran reza norouzirad biochemistry department, faculty of medicine, dezful university of medical sciences, dezful, ir iran mehdi khabzkhoob department of epidemiology, faculty of health, shahid beheshti university of medical sciences, tehran, ir iran; department of epidemiology, faculty of health, shahid beheshti university of medical sciences, tehran, ir iran. tel: +98-2182401615

background road traffic injuries are among the leading causes of death in the world and iran. objectives the aim of this study was to assess the role of age, sex, education, and time of accident on human casualties and mortalities of road crashes in iran. materials and methods this study was based on data gathered by iranian police department from the records of road crashes from april 4, 2008 ...

Journal: :iranian journal of public health 0
j poorolajal s khazaei z kousehlou sj bathaei a zahiri

background: vaccination status is more often evaluated by up-to-date vaccination coverage rather than timeliness of immunization. this study was conducted to evaluate delayed vaccination during infancy period and to determine the predictors effecting on vaccination delay. methods: this cross-sectional study was conducted from june to september 2011 in hamadan province, the west of iran, recruit...

Journal: :journal of current ophthalmology 0
محمد فقیهی mohammad faghihi هادی استادی مقدم hadi ostadimoghaddam امین فاطمی amin fatemi جواد هرویان javad heravian عباسعلی یکتا abbasali yekta

purpose : to determine the prevalence of refractive errors, strabismus and amblyopia in the schoolboys of varamin city, iran methods : in a cross-sectional population-based study in 2010, we used random cluster sampling to select the participants from varamin high school students. examinations were conducted at the school site under standard conditions. all students had non-cycloplegic refracti...

Journal: :international journal of epidemiologic research 2014
ataollah hashemian ashraf direkvand-moghadam ali delpisheh azadeh direkvand-moghadam

background and aims: internet addiction is one of the problems emerged with the development of technology. considering the potential negative effects of internet addiction on health, the present study aimed to determine the prevalence of internet addiction in university students in ilam, west of iran, in 2014. methods:in this cross– sectional study, 1066 university students in both public and ...

Journal: :journal of current ophthalmology 0
حسن هاشمی hassan hashemi مهدی خبازخوب mehdi khabazkhoob نگاره یزدانی negareh yazdani هادی استادی مقدم hadi ostadimoghaddam اکبر درخشان akbar derakhshan سارا سروش sara soroush میرنقی موسوی

purpose: to determine the prevalence of refractive errors in the students of mashhad university of medical sciences, iran methods: in this cross-sectional study, we used cluster sampling for selecting participants from every department of mashhad university of medical sciences, proportional to the number of students in each department. each participant received refraction examination with an au...

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