2.7. Statistical methods
REGRESSION
All data collected are analyzed descriptively: means, standard deviation, median and quartile, or frequencies and percentages (overall and separated by intervention group). Endpoints are analyzed graphically and in an exploratory manner, and depending on the scale, performed using analysis of covariance or logistic regression (in each case, the treatment group and (if available and in case of relevant group differences) the respective baseline values are adjusted for as covariates). Adjusted means or odds ratios with 95% confidence intervals and p-values for the group comparisons are reported. All 