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

Table 5 Marital relationship status among females, 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	54.93 ± 0.59	56.05 ± 0.43
Post-intervention	56.46 ± 1.08	61.87 ± 0.58	1.53 (-1.44 to 4.50); P = 0.313	5.82 (4.31-7.34); P < 0.001	4.29 (0.96-7.62)	0.012	0.51
Affection
Pre-intervention	20.28 ± 0.33	20.64 ± 0.22
Post-intervention	20.65 ± 0.47	23.21 ± 0.35	0.37 (-1.05 to 1.79); P = 0.613	2.57 (1.65-3.48); P < 0.001	2.20 (0.51-3.89)	0.011	0.51
Cognitive
Pre-intervention	20.45 ± 0.34	20.84 ± 0.24
Post-intervention	21.35 ± 0.65	21.72 ± 0.36	0.90 (-0.74 to 2.54); P = 0.285	0.88 (0.06-1.70); P = 0.036	-0.02 (-1.85 to 1.82)	0.987	0
Communication
Pre-intervention	14.12 ± 0.32	14.60 ± 0.23
Post-intervention	14.38 ± 0.64	16.97 ± 0.32	0.27 (-1.36 to 1.89); P = 0.750	2.37 (1.61-3.14); P < 0.001	2.11 (0.31-3.91)	0.022	0.46

CI: Confidence interval.