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Table 2 Measurements of the participants’ mental well-being at baseline, 6-weeks, and the 6-months follow-up

From: Accessible mental well-being intervention for adolescents in school settings: a single-group intervention study using a pretest–post-test design

 

N

Total Scores

Change

Effect Size

(p)

Mean (SD)

Mean

Cohen’s d

YP-CORE

     

 Baseline

87

21.48 (4.86)

   

 6 weeks

87

17.67 (7.27)

 − 3.82

0.63

 < 0.001

 Baseline

69

21.20 (4.48)

   

 6 months

69

20.06 (6.74)

 − 1.14

0.17

0.904

BDI − II

     

 Baseline

82

23.60 (8.75)

   

 6 weeks

82

19.32 (11.01)

 − 4.28

0.52

 < 0.001

 Baseline

63

22.95 (8.24)

   

 6 months

62

21.94 (12.51)

 − 0.76

0.07

0.896

OASIS

     

 Baseline

81

10.98 (3.19)

   

 6 weeks

81

9.62 (3.55)

 − 1.36

0.49

 < 0.001

 Baseline

62

10.97 (3.25)

   

 6 months

62

10.61 (4.01)

 − 0.35

0.11

0.052

  1. YP-CORE = The Young Persons Clinical outcomes for routine Evaluation, BDI-II = Beck Depression Inventory, OASIS = The Overall Anxiety Severity and Impairment Scale