background: as children comprise a considerable proportion of our population, the importance of local epidemiologic research and geographic and racial differences can’t be disputed on childhood malignancies. methods: in this descriptive retrospective study, we extensively reviewed the medical records of patients younger than 15 years of age, diagnosed with solid malignant tumors, from 1996 to 2...

BACKGROUND Epidemiologic and animal studies suggest that selenium may reduce risk of colorectal cancer. However, the epidemiologic data is mainly from relatively small investigations, limiting their interpretation. Although substantial evidence suggests that smoking is a strong effect modifier for other antioxidative nutrients, little is known about smoking-selenium interactions in colorectal t...

background: it is introduced that unintentional childhood poisoning can be as result of child home environment and characteristics of parents. this study aimed at quantifying the adjusted population attributable risk percentage of risk factor of unintentional childhood poisoning.  materials and methods: the hospital based case- control included 140 consecutive poisoned children who admitted to ...

purpose: to evaluate the etiologic and epidemiologic findings in central retinal artery occlusion (crao) patients in a tertiary eye center in tehran, iran. methods: all patients with crao refered to the emergency department of farabi hospital during 2001-2002 were enrolled in the study. all patients received routine treatment and were followed for 3 months. cardiology consult was done for all p...

Epidemiologic evidence indicates that several markers of exposure to childhood infections are inversely associated with the risk of childhood leukemia and lymphomas. We used the Swedish Family-Cancer Database to assess the effects of number of siblings on the risk of non-Hodgkin's (n = 7,007) and Hodgkin's lymphomas (n = 3,115), leukemias (n = 7,650), and multiple myeloma (n = 1,492) by histopa...

background: periodic epidemiological studies are necessary to understand the pattern of poisoning in each region. this study was designed to evaluate the pattern of acute poisoning cases treated in a tertiary care hospital in navi mumbai, india. methods: this cross sectional study was conducted at dr. d. y. patil medical college, hospital and research centre during july 2012 to july 2013. all c...

Recent epidemiologic research has shown that people with higher socioeconomic status (SES) (e.g., educational attainment) have better psychological health than those with lower SES. However, the psychosocial mechanisms of underlying this relationship remain unclear. To fill this gap, the current study examines the mediating effects of job demands and job resources in the relationship between ed...