Table 4.

Comparisons between experimental and control groups on anxiety measured with STAI-Y before and after the childbirth.

	Experimental Group (n = 44) M (SD)	Control Group (n = 44) M (SD)	t	95% CI	d
Before the childbirth	2.07 (0.15)	2.08 (0.18)	−0.04	−0.16, 0.16	1.09
After the childbirth	2.01 (0.06)	2.32 (0.19)	−4.69 ***	−4.44, −0.17	1.23

Notes: STAI-Y = State–Trait Anxiety Inventory Form Y; M = mean; SD = standard deviation; t = Student’s t-test; CI = confidence intervals; d = Cohen’s d. *** p < 0.001.