showed a trendp = 0.082
Only PPT1 (β = 1.42; 95% CI −0.19 to 3.02; p = 0.082) and PPT2 (β = 1.34; 95% CI −0.19 to 2.88; p = 0.082) showed a trend toward a sequence effect, suggesting a minor, non-significant influence of treatment order on the outcome (β = 1.34; 95% CI −0.19 to 2.88; p = 0.082).