Table 2

Clinical outcomes

YTPSDQPSS-4SWEMWBS
4-week pre-post (n=167)Baseline
Mean (SD)
6.63 (2.07)15.71 (5.56)7.62 (2.66)22.21 (4.35)
4 weeks
Mean (SD)
3.27 (1.72)13.23 (5.40)6.32 (2.47)23.80 (4.48)
Mean difference
95% CI
3.36
(3.01 to 3.71)
2.48
(1.78 to 3.17)
1.30
(0.82 to 1.78)
−1.59
(−2.37 to −0.80)
P value<0.001<0.001<0.001<0.001
Effect size (95% CI)d=1.47
(1.25 to 1.69)
d=0.54
(0.38 to 0.70)
d=0.41
(0.25 to 0.56)
d=0.31
(0.15 to 0.46)
12-week pre-post
(n=117)
Baseline
Mean (SD)
6.62 (2.08)15.93 (5.42)7.66 (2.41)21.74 (4.06)
12 weeks
Mean (SD)
2.93 (1.65)12.60 (5.65)6.19 (2.52)23.23 (5.02)
Mean difference
95% CI
3.70
(3.25 to 4.14)
3.33
(2.41 to 4.26)
1.47
(0.90 to 2.04)
−1.49
(−2.42 to −0.56)
P value<0.001<0.000<0.001<0.002
Effect size (95% CI)d=1.53
(1.26 to 1.79)
d=0.66
(0.45 to 0.85)
d=0.47
(0.28 to 0.66)
d=0.29
(0.10 to 0.47)
  • PSS, Perceived Stress Scale; SDQ, Strengths and Difficulties Questionnaire; SWEMWBS, Short Warwick-Edinburgh Mental Well-Being Scale; YTP, Youth Top Problems.