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

Table 7 Mental health 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)
Depression
Pre-intervention	7.38 ± 0.36	7.43 ± 0.36
Post-intervention	6.12 ± 0.85	4.60 ± 0.48	-1.27 (-3.34 to 0.81); P = 0.234	-2.82 (-3.95 to -1.69); P < 0.001	-1.09 (-3.23 to 1.05)	0.319	0.2
Anxiety
Pre-intervention	7.58 ± 0.28	7.26 ± 0.30
Post-intervention	6.03 ± 0.60	5.46 ± 0.50	-1.55 (-3.03 to -0.07); P = 0.041	-1.80 (-2.96 to -0.65); P = 0.003	-1.73 (-3.29 to -0.17)	0.03	0.44
Stress
Pre-intervention	12.93 ± 0.39	12.66 ± 0.33
Post-intervention	10.57 ± 0.74	7.68 ± 0.55	-2.37 (-4.27 to -0.46); P = 0.016	-4.98 (-6.35 to -3.61); P < 0.001	-2.11 (-3.95 to -0.27)	0.025	0.45

CI: Confidence interval.