Efficacy evaluation of an affectionate touch-based psychological intervention program for in vitro fertilization-embryo transfer patients: A controlled trial

Table 4 Marital status of males, mean ± SE

Time	Control group	Intervention group	Within-group change (control) β (95%CI); P value	Within-group change (intervention) β (95%CI); P value	Group-time interaction difference Δ (95%CI)	Interaction P value	Effect size (Cohen’s d)
Total
Pre-intervention	55.46 ± 0.60	55.97 ± 0.60
Post-intervention	56.90 ± 0.91	61.20 ± 0.70	1.45 (-0.66 to 3.56); P = 0.180	5.24 (3.90-6.57); P < 0.001	3.79 (1.29-6.28)	0.003	0.6
Affection
Pre-intervention	20.97 ± 0.24	21.35 ± 0.24
Post-intervention	22.01 ± 0.38	23.23 ± 0.25	1.04 (0.05-2.04); P = 0.042	1.88 (1.40-2.36); P < 0.001	0.84 (-0.26 to 1.95)	0.135	0.3
Cognitive
Pre-intervention	21.49 ± 0.34	21.31 ± 0.32
Post-intervention	21.57 ± 0.54	22.49 ± 0.42	0.08 (-1.05 to 1.21); P = 0.888	1.18 (0.47-1.88); P = 0.001	1.09 (-0.24 to 2.42)	0.107	0.32
Communication
Pre-intervention	13.10 ± 0.36	13.36 ± 0.34
Post-intervention	13.43 ± 0.47	15.53 ± 0.40	0.33 (-0.89 to 1.54); P = 0.600	2.18 (1.33-3.02); P < 0.001	1.85 (0.37-3.33)	0.014	0.49

CI: Confidence interval.