background : the present study aimed to provide better insight on methodological issues related to time preference studies, and to estimate private and social discount rates, using a rigorous systematic review and meta-analysis. methods : we searched pubmed, embase and proquest databases in june 2013. all studies had estimated private and social time preference rates for health outcomes through...

background: esophageal cancer is often diagnosed in the last stages where the chance of patient’s survival is very low. the aim of this systematic review was presentation of valid estimation of survival in patients with esophageal cancer in different regions of iran. methods: a systematic review was carried out based on the reliable domestic medical databases including: sid, magiran, irandoc an...

data extraction primary outcomes were incidence, prevalence, or odds ratio of having osteoporosis, defined as bone mineral density t-score < -2.5 sd. results of 353 articles, 344 articles were excluded, 9 underwent full-length review and data were extracted from 7 studies consisting of 113,558 patients. finally, 3 extracted studies were included in the meta-analysis of osteoporosis. among cohor...

background: increasing attention to the concept of polycystic ovary syndrome (pcos) health-related quality of life has led to the development of tool that aims to measure this concept. objective: the purpose of this study was to conduct a systematic review of psychometric properties of the pcos health-related quality of life questionnaire. materials and methods: a search of database (pubmed, ps...

objective: in this study, we aimed at evaluation of the efficacy of hypericum perforatum and flaxseed on hot flash, vaginal atrophy and estrogen-dependent cancers in menopausal women materials and methods: we searched medline, scopus, and the cochrane central register of controlled trials (rct) to explore trials that assessed the effectiveness of h. perforatum and flaxseed on hot flash, vaginal...

background and aims: nowadays, hypnosis has opened its position in the medical community. based on controlled trials, hypnosis has been superior compared to other interventional procedures to reduce acute pain. this investigation aims to determine the effectiveness of hypnosis in the treatment of pain and enhancing mental performance in iran, using the meta-analysis method. methods: the search ...

background and aims: neurofeedback is a relatively new therapy focusing on the core symptoms of inattention, impulsivity and hyperactivity.we undertook a meta-analysis to estimate the effectiveness of neurofeedback on attention deficit disorder in iran. methods: international databases of pubmed, scopus, isi, google scholar, and national databases of sid, med lib, iranmedex, magiran were search...

background: investment in science is vital for the development and well-being of societies. this study aims to assess the scientific productivity of countries by quantifying their publication of systematic reviews taking the gross national income per capita (gnipc) into account. methods: medline and isi web of science were searched for systematic reviews published between 1st january 2006 and 3...

background: burnout is currently a major concern among physicians due to their high level of stress at work. there are several reports on various levels of burnout in residency programs due to several predisposing factors. the aim of this systematic review was to estimate a more precise prevalence of burnout among residents of obstetrics and gynecology. methods: pubmed, science direct and scopu...

introduction: the prevalence of iran deficiency anemia (ida) in pregnant women is in variable between 40-80% in developing countries. there are some differences among different studies on this disorder. so, this present study is been performed for evaluating the prevalence of ida among pregnant iranians with systematic review and meta analysis method.method: this study is based on received info...