Table 3.

M, SD, and effect sizes (pre–post and pre–follow-up) for the ITT analysis of outcome measures (N = 35).

	Pre M (SD)	Post M (SD)	Follow-up M (SD)	Pre–post effect size (Cohen’s d)	Pre–follow-up effect size (Cohen’s d)
Coping humor (CHS)	2.47 (0.58)	2.80 (0.52)	2.77 (0.57)	0.88 [0.48–1.27]∗∗∗	0.63 [0.26–0.99]∗∗
Cheerfulness (STCI)	2.13 (0.54)	2.62 (0.61)	2.72 (0.62)	0.75 [0.37–1.12]∗∗∗	0.88 [0.49–1.28]∗∗∗
Seriousness (STCI)	2.99 (0.36)	2.64 (0.44)	2.54 (0.52)	0.80 [0.42–1.18] ∗∗∗	0.91 [0.51–1.30]∗∗∗
Bad mood (STCI)	2.07 (0.66)	1.66 (0.53)	1.59 (0.64)	0.61 [0.24–0.96]∗∗	0.65 [0.28–1.01]∗∗∗
Perceived stress (PSS)a	19.46 (5.47)	14.80 (4.63)	14.26 (4.06)	1.05 [0.63–1.46]∗∗∗	1.09 [0.66–1.50]∗∗∗
Depressiveness (CES-D)a	12.63 (5.49)	8.03 (4.11)	8.43 (5.93)	0.90 [0.51–1.29]∗∗∗	0.81 [0.42–1.19]∗∗∗
Anxiety (STAI)a	45.54 (9.61)	39.26 (8.33)	37.49 (10.21)	0.65 [0.28–1.01]∗∗∗	0.62 [0.26–0.98]∗∗
Well-being (WHO-5)a	15.06 (3.13)	17.49 (3.06)	17.26 (3.31)	1.05 [0.63–1.46]∗∗∗	0.67 [0.30–1.03]∗∗∗

^aSum scores; 95% confidence intervals of effect sizes in square brackets; CHS, Coping Humor Scale; STCI, State-Trait-Cheerfulness Inventory – state version; PSS, Perceived Stress Scale; CES-D, Center for Epidemiological Studies Depression Scale; STAI, State-Trait-Anxiety Inventory – state version; WHO-5, WHO-5 Well-Being Index; ^∗p < 0.05, ^∗∗p < 0.01, ^∗∗∗p ≤ 0.001.