نتایج جستجو برای: incidence rate ratio
تعداد نتایج: 1546426 فیلتر نتایج به سال:
BACKGROUND Previous studies have shown that women involved in similar activities as men are at increased risk for anterior cruciate ligament injuries. HYPOTHESIS The incidence rate of complete anterior cruciate ligament tears for men and women in our athletic, college-aged population is similar. STUDY DESIGN Descriptive epidemiology study. METHODS Students graduating in class years 1994 t...
background: hepatitis b (hb) is a major global mortality. accurately predicting the trend of the disease can provide an appropriate view to make health policy disease prevention. this paper aimed to apply three different to predict monthly incidence rates of hb. methods: this historical cohort study was conducted on the hb incidence data of hamadan province, the west of iran, from 2004 to 2012....
abstract background data on childhood and adolescent malignant tumors incidence are skimp in developing countries. in this study, we analyzed the incidence and trend of childhood and adolescent cancers in yazd city, center of iran between jan 2004 and dec 2013. materials and methods the various types of malignant tumors were grouped pursuant to the international classification for cancer in chi...
Aberrant DNA methylation affects carcinogenesis of colorectal cancer. Folate metabolizing enzymes may influence the bioavailability of methyl groups, whereas DNA and histone methyltransferases are involved in epigenetic regulation of gene expression. We studied associations of genetic variants of folate metabolizing enzymes (MTHFR, MTR, and MTRR), DNA methyltransferase DNMT3b, and histone methy...
BACKGROUND AND PURPOSE A correlation has been found between periodontal disease (PD) and stroke. This study was conducted to investigate whether dental prophylaxis and periodontal treatment reduce the incidence rate (IR) of ischemic stroke. METHODS We identified 510 762 PD cases and 208 674 non-PD subjects from January 1, 2000, to December 31, 2010. The PD cases were divided into dental proph...
A regime-switching SIR epidemic model with a ratio-dependent incidence rate and degenerate diffusion
Background: Phenylketonuria (PKU), is one of the most common metabolic diseases that resulted in mental retardation. The study aimed to investigate the incidence of phenylketonuria in Lorestan province, Iran. Materials and Methods: The study was an observational-descriptive study which included all identified cases of patients from April 2006 to February 2016. The required data were collected f...
Background: Pre-diabetes is a high risk condition for developing type 2 diabetes mellitus and cardiovascular disease. The target of this study is evaluation of incidence rate of pre-diabetes and its risk factors in a long- term follow up in the Tehran Lipid and Glucose Study. Methods: The Tehran Lipid and Glucose Study is a prospective study being accomplished on a characteristic sample of t...
Background and Aim: Cancer disease is one of the main problems of Iranian health system. It is after Cardiovascular diseases and accidents, the third leading cause of death in Iran. In many countries, differences in socio-economic status have been linked with the incidence of disease, death and in general, health inequalities. The aim of this study is to determine the socioeconomic factors asso...
background: multiple sclerosis (ms) is a chronic inflammatory and demyelinating disease of the central nervous system, which is accompanied by significant disabilities. although there are some published data regarding the epidemiological features of ms in other parts of iran, scarce data are available about the prevalence and demographic characteristics of ms in fars province. the current stud...
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