Читать книгу Randomised Clinical Trials - David Machin - Страница 118

Comparison of means in the two treatment groups will be made using the t‐test with the appropriate degrees of freedom and a 95% confidence interval for the difference reported. (Should the VAS scores not follow an approximate Normal distribution shape then this analysis may be replaced by the Wilcoxon test). In addition, regression analysis will verify if this comparison requires adjustment for imbalance in the baseline VAS values and clinical assessment values.