background : gastric cancer is a common and lethal disease throughout the world. in iran with 7300 new cases annually, it is the first cause of cancer related death in both sexes. regarding the high incidence (10.5/100000 individuals) of gastric can­cer and priority of prevalence index in cancer management, in this study we tried to determine 1, 2-3 and 4-5 year point preva­lence of the disease...

Background: This study aimed to assess the pattern of hygienic behaviors of Iranian children and adolescents at national and sub-national levels according to the socioeconomic status (SES) of their living region.   Methods: Data were obtained from the fourth national school-based surveillance survey entitled, “CASPIAN-IV study” (2011-2012). It was conducted among 14,880 stud...

Introduction In 2013, NCHS completed a mortality update for the National Health Interview Survey (NHIS) participants for the years 1985 to 2009, with mortality ascertained through December 31, 2011. Due to requirements to protect the confidentiality of the NHIS participants, restricted-use versions of the NHIS Linked Mortality Files were made available only through the NCHS Research Data Center...

In this study, the impact of youth identity crisis is investigated on the national security of the Islamic Republic of Iran. The research method is qualitative; the library method is used for data collection; and data analysis is carried out with descriptive-analytical method. The main research question is how does the identity crisis in youth affect the national security of the Islamic Republi...

background: this study aimed to assess the frequency of consuming different types of snacks among iranian students according to socio-economic status (ses) of their living region. methods: data were obtained from the fourth national school-based surveillance survey entitled caspian-iv study. overall, 14880 school students, aged 6-18 years, were selected through multistage, cluster sampling from...