Fisher 精确检验可用于分析 2x2 列联表,并检验行变量和列变量是否不相关(H0:行变量和列变量不相关)。Fisher 精确检验的 p 值对于所有样本数量都准确,而当单元格计数较小时,研究相同假设的卡方检验的结果可能不准确。例如,可以使用 Fisher 精确检验来分析下面的竞选结果列联表,以确定投票是否独立于投...
Categorical variables were compared between groups using Fisher's exact test and continuous variables with the two-sample t-test. Multivariable logistic regression models, using a stepwise variable selection method, were fit to identify independent predictors of MZT and pregnancy outcomes. All variables ...
Chi-squared (χ2) and Fisher’s exact (†) tests were used, as appropriate [8]. Differences in two-year IF between conclusive and inconclusive studies were measured using independent samples t-test (‡). Subgroup analysis was performed based on region of publication, surgical specialties, ...
If SARS-CoV-2 can be isolated from a nose or throat swab, or from saliva, it is likely that the patient is infectious. Indeed, an rRT-PCR test cannot establish infectivity. This is because rRT-PCR detects fragments of vRNA, the corresponding sequences of which are present in viable (...
test_cookieUsed to check if the user's browser supports cookies. Maximum Storage Duration: 1 dayType: HTTP Cookie ar_debugChecks whether a technical debugger-cookie is present. Maximum Storage Duration: 3 monthsType: HTTP Cookie LinkedIn 1Learn more about this provider li_gcStores the user's...
Fisher's exact test is a statistical significance test used for small sample sizes. It's commonly used to analyze contingency...