showed a trendp = 0.053
very close to significancep = 0.053
Within-group tests showed that participants in the WA-MBP-LS group significantly improved on JSS at posttest (B = 1.84, 95% CI = 0.19–3.49, d = 0.42, z = 2.19, p = 0.029), and they showed a trend very close to significance and of similar ES at follow-up (B = 1.94, 95% CI = −0.03–3.90, d = 0.48, z = 1.94, p = 0.053).