نتایج جستجو برای: chi square test

تعداد نتایج: 920814  

Journal: :Academic medicine : journal of the Association of American Medical Colleges 2005
Arianne Teherani Carol S Hodgson Mary Banach Maxine A Papadakis

BACKGROUND In a previous study, we showed that unprofessional behavior in medical school was associated with subsequent disciplinary action. This study expands on that work by identifying the domains of unprofessional behavior that are most problematic. METHOD In this retrospective case-control study, negative comments were extracted from student files for 68 case (disciplined) and 196 matche...

Journal: :Sao Paulo medical journal = Revista paulista de medicina 2010
Leila Kasraian

CONTEXT AND OBJECTIVE the adequacy of blood depends on blood donation rates and numbers of blood donors. To prepare adequate blood supplies, it is essential to investigate the barriers and factors that stop individuals from donating. This study aimed to identify the causes of lapsed donation at our center. DESIGN AND SETTING cross-sectional study of volunteer blood donors in Shiraz, Iran. M...

2015
Mi-Na Park Min-Gyu Choi Su Jeong You

PURPOSE Many patients presenting with headache also complain of constipation; the relationship between these two symptoms has not been explored in detail. The aim of this study was to investigate the association between primary headache and constipation. METHODS This retrospective study included all children who attended the Inje University Sanggye Paik Hospital complaining of headache, and w...

Journal: :European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry 2010
E T Pitanga Fernandes A M Duarte Vargas A C Oliveira M A Camargo da Rosa S Dutra Lucas E Ferreira E Ferreira

AIM Identify the experience of dental caries among adolescents associated to work, self-care, social life and access to healthcare services. MATERIALS AND METHODS This cross-sectional study was carried out with 60 adolescents aged 15 and 16 years in a city in southeastern Brazil. The data were collected through a structured interview and clinical exam for dental caries carried out by a single...

Journal: :BMC Proceedings 2007
Jun Zhang Xiaofeng Zhu Richard S Cooper

We propose a nonparametric association analysis combining both family and unrelated case-control genotype data. Under the assumption of Hardy-Weinberg equilibrium, we formed an affected group to compare with a group of unaffecteds.Comparison with traditional case-control chi-square test and transmission-disequilibrium test shows that this new approach has noticeably improved power. All analysis...

Journal: :Harm Reduction Journal 2007
Alison Looby Mitch Earleywine Dale Gieringer

BACKGROUND Many argue that prohibition creates more troubles than alternative policies, but fewer than half of American voters support a taxed and regulated market for cannabis. Some oppose a regulated market because of concerns about driving after smoking cannabis. Although a roadside sobriety test for impairment exists, few voters know about it. The widespread use of a roadside sobriety test ...

Journal: :Journal of veterinary internal medicine 2009
A Heather Graham Michael S Leib

BACKGROUND The coadministration of prednisone and ultralow-dose aspirin has been recommended for the management of various diseases, but the safety of this combination in dogs has not been studied. HYPOTHESES The gastroduodenal lesions associated with prednisone and ultralow-dose aspirin administration will be similar to those caused by prednisone alone, but both treatments will result in mor...

Journal: :AIDS patient care and STDs 2015
Hilary L Surratt Steven P Kurtz Maria A Levi-Minzi Theodore J Cicero Kiyomi Tsuyuki Catherine L O'Grady

Pain represents a significant source of morbidity, function loss, and decreased quality of life among people living with HIV. The present study examined the associations among pain, pain treatment, and ARV adherence among indigent, HIV-positive substance abusers. Participants were recruited via targeted sampling strategies, and completed a one-time computer-assisted personal interview. ANOVA an...

2017
Saiful Miah Karl H Pang Wayne Rebello Zoe Rubakumar Victoria Fung Suresh Venugopal Hena Begum

BACKGROUND We aimed to identify the factors influencing UK medical student applicants' choice of foundation school. We also explored the factors that doctors currently approaching the end of their 2-year program believe should be considered. METHODS A cross-sectional study was conducted during the 2013-2014 academic year. An online questionnaire was distributed to 2092 final-year medical stud...

Journal: :Journal of nutrition education and behavior 2013
Jocelyn Pang David Hammond

OBJECTIVE To evaluate the efficacy and consumer preferences of calorie labeling on menus. DESIGN Between-group experiment. Participants were randomized to view menu items according to 1 of 4 experimental conditions: no calorie information, calorie-only information, calorie plus health statement (HS), and calorie plus the Physical Activity Scale. Participants selected a snack and then rated me...

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