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. Author manuscript; available in PMC: 2023 Oct 15.
Published in final edited form as: J Affect Disord. 2022 Jul 22;315:96–104. doi: 10.1016/j.jad.2022.07.038

Table 2 -.

Positive Affect

Sex Risk
Timepoint Overall1 Boys1 Girls1 p-value2 Low1 High1 p-value2
Negative Affect
Grade 6 21.27 (6.5) 21.19 (6.2) 21.34 (6.76) 0.98 19.58 (5.59) 21.77 (6.68) 0.018
Grade 7 18.24 (5.85) 18.53 (6.08) 18.01 (5.67) 0.63 17.73 (5.57) 18.40 (5.94) 0.57
Grade 8 17.70 (5.45) 17.6 (5.82) 17.79 (5.15) 0.54 17.5 (5.39) 17.77 (5.48) 0.75
Grade 9 18.26 (6.02) 16.71 (4.95) 19.45 (6.51) 0.005 16.82 (5.00) 18.72 (6.26) 0.091
Grade 11 18.75 (6.93) 16.61 (5.89) 20.41 (7.24) <0.001 16.85 (4.03) 19.42 (7.60) 0.18
Grade 12 21.16 (8.13) 19.96 (7.00) 21.97 (8.75) 0.18 18.82 (5.55) 22.04 (8.76) 0.051
Positive Affect
Grade 6 41.12 (7.19) 41.46 (7.39) 40.84 (7.02) 0.61 43.26 (6.04) 40.49 (7.39) 0.019
Grade 7 34.35 (8.57) 33.21 (8.64) 35.27 (8.43 0.081 36.81 (6.48) 33.60 (8.99) 0.03
Grade 8 34.46 (9.54) 33.13 (9.88) 35.58 (9.14) 0.1 35.65 (7.81) 34.06 (10.04) 0.37
Grade 9 32.26 (8.98) 31.67 (8.65) 32.71 (9.23) 0.54 33.34 (7.39) 31.91 (9.42) 0.28
Grade 11 32.62 (9.35) 32.94 (8.85) 32.37 (9.76) 0.65 33.33 (8.61) 32.36 (9.62) 0.45
Grade 12 33.62 (8.93) 34.35 (8.81) 33.14 (9.02) 0.3 34.54 (9.31) 33.28 (8.79) 0.34
1

Mean (SD)

2

Wilcoxon Rank Sum Test