نتایج جستجو برای: case control studies
تعداد نتایج: 3684408 فیلتر نتایج به سال:
cohesion is an indispensable linguistic feature in discourse analysis. lexicald such a differe cohesion and conjunction in particular as two crucial elements to textual cohesion and comprehension has been the focus of a wide range of studies up to now. yet the relationship between the open register and cohesive devices has not been thoroughly investigated in discourse studies. this study concen...
Background The aim of this study was to evaluate the anxiety and depression in women with infertility. MaterialsAndMethods A case control study was carried out on 150 subjects with infertility and on 150 subjects with tubal ligation. The two groups were matched in demographic and personal characteristics. Data collection tool was a questionnaire including questions regarding demographic and obs...
conclusions levothyroxine absorption testing over 2 hours may offer a more rapid alternative to the commonly used longer protocols to rule out malabsorption. scheduling a levothyroxine absorption test may induce some patients to start adhering to levothyroxine therapy. patients and methods serum levels of thyroid stimulating hormone (tsh), ft4, and free triiodothyronine (ft3) were drawn at 0, 6...
Background The aim of this study was to compare sexual function between women of infertile couples and women who have undergone TL. MaterialsAndMethods In this case control study in Royan Institute and in a health center in Gilan province (Iran), between 2013 and 2014. There were 150 infertile women (cases) and 150 women undergoing TL (controls). A questionnaire was completed for each patient. ...
Identification of confounding factors, evaluation of their influence on cause-effect associations, and the introduction of appropriate ways to account for these factors are important considerations in designing case-control studies. This paper presents designs useful for these purposes, after first providing a statistical definition of a confounding factor. Differences in the ability to identif...
'National Cancer Institute, Biometric Research Branch, DCTD, Executive Plaza North, Room 739, 6130 Executive Boulevard, MSC 7434, Bethesda, Maryland 20892-7434, U.S.A. 2National Cancer Institute, Biometry Research Group, DCP, Executive Plaza North, Room 344, 6130 Executive Boulevard, Bethesda, Maryland 20892, U.S.A. 3F0x Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, Pennsylvania 1911...
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
Background and aims: Despite substantial advances in the etiology of autism spectrum disorder (ASD),the environmental risk factors have not yet been well understood. The present study investigated theassociation between ASD, and maternal and perinatal risk factors.Methods: This matched, case-control study was conducted in Hamadan, the west of Iran, fromNovember 2015 to M...
Background The aim of this study was to evaluate the hypothesis that infertility may result in a decrease in quality of life (QOL). MaterialsAndMethods In this case control study that carried out on 150 women with infertility and 150 women undergone TL as the control group. The participants were asked to fill out the Short Form Health Survey (SF-12) questionnaire, a generic instrument to measur...
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