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1、1会计学Natureguideline中山大学循证医学中山大学循证医学Checklist of statistical adequacy 1.Reported n at start of study and for each analysis2.Provided sample size calculation or justificationExamplesWe believed that . . . the incidence of symptomatic deep venous thrombosis or pulmonary embolism or death would be 4% in

2、 the placebo group and 1.5% in the ardeparin sodium group. Based on 0.9 power to detect a significant difference (P=0.05, two-sided), 976 patients were required for each study group. To compensate for non-evaluable patients, we planned to enroll 1000 patients per group2表4-5试验组和对照组治疗前血气分析结果What are t

3、he problems?Example18 patients with acute encephalitis B in a clinic were randomly allocated into 3 groups. Each group accepted different kind of treatments, say treatment A, B and C; and the fevering days were measured as the effects of treatments. Please make an inference from the differences of means of fevering days among the three groups whether the treatments had different effects.2min13.4667S2min2max and SSF处理What are the problem?What is the height fo

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