3.2 | SENSITIVITY ANALYSIS
Comparing only mean differences of variables could raise concerns about
the robustness and reliability of our results. Thus, we performed
sensitivity analyses using Wilcoxon signed ranks test, a non-parametric
alternative to the paired t test. Sensitivity analyses indicate that our
inferences drawn from t tests are robust to comparing medians of
variables before and after lifting COVID-19 lockdown (Appendix 1 and 2).