Analysis
SAID
STATA version 16 (StataCorp. 2019. Stata Statistical Software: Release 16. College Station, TX: StataCorp LLC.) was used for statistical analyses. The sample size was calculated with a standardized tolerance limit of one standard deviation and no difference, 20 participants were required for a power = 0.8 with a significance level of 0.05. Mean difference between outcomes for the scenarios within the COVID-19 groups and compared to control group are adjusted for the correlation between measures obtained by the same team by using mixed models. We performed a non-inferiority analysis in which one scenario is said to be non-inferior to reference scenario if the lower limit of 95% confidence interval of the mean differences is less than half a standard deviation of the outcome for the reference scenario. The statistical evaluation of the provider survey was performed with the Friedman- and Wilcoxon–test. The significance level was set at P ≤ 0.05.