background: esophageal cancer is one of the major malignancies around the world. it is the 8th high frequency cancer and the 6th leading cause of cancer death worldwide. the etiology of esophageal carcinoma is thought to be related to the exposure of smoking, alcohol, nitrate and low socioeconomic status. in this study, the status of oral health was evaluated in the population living in the nor...

background: stem cell therapy is a new treatment option for different diseases. the aim of this systematic review is assessing the articles that focus on sct in iran and evaluate the amount of their success, failure and complication. methods: systematic search was conducted for finding english and persian papers (controlled trials and cohort studies with follow up) published before march 2015. ...

background: this article was to present the sampling and measurements methods and the main preliminary findings of the kercadr cohort study (first round) in an urban and peri-urban setting, kerman, southeastern iran2009-11. method: 5900 (3238 female) people aged between 15 to 75 years were recruited in the household survey by non-proportional to size one-stage cluster sampling. trained internal...

Much adult physical inactivity research ignores early-life factors from which later influences may originate. In the 1958 British birth cohort (followed from 1958 to 2008), leisure-time inactivity, defined as activity frequency of less than once a week, was assessed at ages 33, 42, and 50 years (n = 12,776). Early-life factors (at ages 0-16 years) were categorized into 3 domains (i.e., physical...

BACKGROUND Since the 1930s, the environment has become increasingly obesogenic, leading to rising rates of adiposity and socioeconomic inequalities in adiposity. Building on studies comparing body mass index (BMI) for cohorts born over a period of 20 years, we examine the social patterning of BMI and central adiposity for three cohorts born over a 40-year period. METHODS Using data from the W...

there are limited documents about hiv patients switched to second-line antiretroviral therapy (art) in resource-limited countries. we aimed to assess the efficacy of second-line art for hiv patients following first-line art failure. this was a cohort study of hiv/aids patients with first-line art treatment failure switched to second-line art between january 2004 and march 2014, who followed for...

objective: there are various attempts to confirm variables that could predict postpartum depression in advance. this study determined antenatal risk factors for postpartum depression in women at risk of developing this disorder. methods: a prospective cohort study was conducted with 2279 eligible women who attended at mazandaran province’ primary health centers from 32-42 weeks of pregnancy to ...

objective: bipolar disorder is strongly associated with suicidal ideations, attempts and commissions. although several studies have been conducted on suicide risk factors in patients with bipolar disorder worldwide, a comprehensive study has not been reported from iran. methods: patients with bipolar disorder type i, hospitalized in iran hospital of psychiatry since may 2008 to august 2011 were...

This paper investigates the association between family poverty, the level of deprivation in electoral wards and children's cognitive test scores using data from the second generation in the 1991 sweep of the British National Child Development Study (1958 birth cohort). Family poverty has a significant association with lower test scores in children of all ages (4-18 years). Neighbourhood poverty...

OBJECTIVES To assess inconsistencies in reported age at first sex (AFS) and age at first marriage (AFM) in three African cohorts, and consider their implications for interpreting trends in sexual and marital debut. METHODS Data were analysed from population-based cohort studies in Zimbabwe, Uganda and South Africa with 3, 10 and 4 behavioural survey rounds, respectively. Three rounds over a s...