background and aim: psychological stress is considered to be an important risk factor for many inflammatory conditions including periodontal disease. a few studies have addressed the relationship between obesity and periodontal disease. so this cross sectional study was aimed to investigate relationship of psychological stress, obesity and periodontal disease in smokers and non smokers. materia...

aims: the dramatic increase of smoking in adolescents has become one of the major challenges in most countries and it needs further consideration. the aim of this study was to determine the smoking prevalence and some related factors among high school students. instrument & methods: this descriptive, cross-sectional study was done in 2012-13 academic year in male and female high school students...

background: low back pain is a common health problem that has many consequences, including disability and absence from work.this study aimed to determine the prevalence of low back pain among women referred to quds clinic in tehran, iran.  material and methods: this cross-sectional study was conducted on women referred to quds clinic, in east of tehran. a total of 100 patients were studied over...

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background: intestinal parasites are still a serious public health problem in the world, especially in developing countries. this study aimed to assess the prevalence of intestinal protozoa infections and associated risk factors among schoolchildren in sanandaj city, iran. methods: this cross-sectional study involving 400 schoolchildren was carried out in 2015. each student was selected using s...

objectives: this study has been carried out to assess the prevalenceof cardiovascular risk factors in the elderly people in amirshahr city. methods & materials: in this descriptive cross- sectional study, 1019 people over 60 years old in amirshahr city were assessed. amirshahr has 2000 elder people over 60 (53.5% male and 46.5% female) .data were collected using standard questionnaire included ...

background : hypertension is a risk factor for life threatening diseases such as cerebrovascular accidents, coronary artery diseases, congestive heart failure and chronic renal failure. the prevalence of non-communicable diseases such as hypertension and diabetes including obesity has increased over the past few years in iran. the first step for modification of cardiovascular diseases in a defi...

background: the nature of work in the construction industry is closely associated with many human factor hazards. manual construction workers are exposed to hand-arm vibration, repetitive movements, holding of heavy loads and tools, and frequent manual materials handling hazards in their daily tasks. work related musculoskeletal disorders are major problems faced by construction workers, which ...

a simple emergency risk prediction tool should be developed for clinicians to quickly identify the prognosis of patients with acute aortic dissection.we enrolled 280 patients with acute aortic dissection admitted to emergency department between may 2010 and february 2013. multivariate logistic regression analysis was performed to identify independent predictors of in-hospital death.the in-hospi...

conclusions prevalence of speech and language delay is high (27%) in children less than three years of age attending the under-five clinic for at-risk children. negative home environment and family history of speech and language disorders are significant risk factors for speech and language delay. the strong association of speech delay with delay in tdsc reemphasizes the need for a complete dev...