نتایج جستجو برای: general population
تعداد نتایج: 1329376 فیلتر نتایج به سال:
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
چکیده کنه تارتن دو لکه ای tetranychus urticae koch یکی از چندخوارترین آفات شناخته شده محصولات کشاورزی دنیا به حساب می آید. در این بررسی جمعیت تخم و مراحل فعال این کنه در شرایط آلودگی طبیعی و مصنوعی در برگ های 8 رقم لوبیا در سال 1392 در گلخانه و مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه موردمطالعه قرار گرفت. آزمایش به صورت طرح کاملاً تصادفی برای شرایط مزرعه در10 تکرار و برای شرایط گلخانه ای...
background: hepatitis c virus (hcv) infection is one of the major blood-borne infections worldwide. hcv carriers may develop chronic hepatitis leading to liver cirrhosis and hepatocellular carcinoma (hcc). there is no overall estimate of the infection prevalence in the northeast of iran. we have performed this research in order to determine accurately the prevalence and risk factors of hcv infe...
aim : to determine the prevalence of gastrointestinal symptoms and signs among persons with diabetes mellitus in a specialist hospital. background : gastrointestinal symptoms and signs are common among patients with diabetes mellitus. morbidity from patients and methods : in this descriptive, cross-sectional study, subjects from the general population with diabetes (n=200) were recruited for th...
introduction chronic hepatitis b virus (hbv) infection is one of the most important health problems worldwide with a high rate of morbidity and mortality. it is a major risk factor for cirrhosis and liver cancer. currently, iran is located in the intermediate hbv zone; however, recent studies have provided some evidence indicating an epidemiological change in the country. the aim of this study ...
background: individuals with a positive family history of colorectal cancer have an increased risk of developing this type of cancer. the number of affected relatives and the age at diagnosis are two factors that increase the risk of colorectal cancer. the aim of this study was to assess the prevalence of a positive family history of colorectal cancer in a random sample among the iranian genera...
background: hepatitis c is one of the most important etiological factor in chronic liver disease which could lead to the progressive liver cirrhosis and hepatocellular carcinoma. the purpose of this study is to determine the prevalence of hepatitis c in east of golestan province (north-east of iran). materials and methods: 2123 inhabitants from north-east of iran of general population have been...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید