highly significantp < .0001
For perceived stress, there was a significant main effect of time, F(2, 112) = 35.75, p < .0001, partial η2 = 0.50, 95% CI [0.36, 0.60]; a significant main effect of group, F(1, 56) = 28.42, p < .0001, partial η2 = 0.48, 95% CI [0.31, 0.58]; and a highly significant time × group interaction, F(2, 112) = 59.96, p < .0001, partial η2 = 0.63, 95% CI [0.51, 0.70].