Between group comparisons for continuous variables were performed using student t-tests, and intergroup comparisons of categorical variables were performed using Chi square tests.
Group comparisons for continuous variables were performed using analysis of covariance; categorical variables were compared using logistic regression.
Comparisons between pairs of groups for continuous variables were performed using Mann–Whitney U test.
Intergroup comparisons for continuous variables were performed using a nonparametric Mann–Whitney test.
Comparisons for continuous variables were performed using an ANCOVA model incorporating fixed effects for strategy, baseline, and randomization factors.
Between group comparisons for continuous variables were performed using Student's t-test or Mann-Whitney U test.
Statistical comparisons between groups for continuous variables were performed using two sample t-tests, whereas categorical variables were analyzed using Pearson's chi square tests.
A statistical analysis for continuous variable was performed using a student's t test.
Comparisons of continuous variables were performed using the Student t test for independent samples.
Group comparisons of continuous variables were performed using Kruskal-Wallis test.
Comparison of normally distributed continuous variables was performed using Student's t-test for paired and unpaired data.
