marginally non-significantp = 0.054
Post-hoc analyses demonstrated that the SST group showed significant reductions in STAI-S scores from baseline to post-intervention ( t = 4.98, adjusted p < 0.001, 95 % CI [0.52, 2.10], Cohen's d = 1.31), with a sustained yet marginally non-significant reduction at follow-up ( t = 2.98, adjusted p = 0.054, 95 % CI [−0.00, 1.57], Cohen's d = 0.78).