Relationship between physical activity and mental health in women after childbirth: a cross-sectional exploratory study

Table 4 Relationship of daily activity with GHQ-28

		Simple regression analysis				Multiple regression analysis
Dependent variables	Independent variables (GHQ-28)	Partial regression coefficient (B)	Standardized partial regression coefficient (β)	95% CI	p	Partial regression coefficient (B)	Standardized partial regression coefficient (β)	95% CI	p	VIF
	Somatic symptoms	− 0.05	− 0.17	− 0.10–0.01	0.1	− 0.04	− 0.15	− 0.09–0.00	0.05	1.09
	Anxiety and insomnia	− 0.03	− 0.10	− 0.10–0.04	0.35	− 0.01	− 0.04	− 0.06–0.04	0.61	1.04
Amount of daily activities	Social dysfunction	− 0.04	− 0.08	− 0.14–0.06	0.44	− 0.03	− 0.06	− 0.10–0.04	0.43	1.05
	Depression	− 0.04	− 0.09	− 0.13–0.05	0.36	− 0.02	− 0.05	− 0.09–0.05	0.54	1.01
	Total score	− 0.02	− 0.15	− 0.04–0.01	0.16	− 0.01	− 0.10	− 0.03–0.01	0.19	1.06

GHQ-28: Likert scale (not at all = 0 points, no more than usual = 1 point, rather more than usual = 2 points, and much more than usual = 3 points)
Dependent variable: Amount of daily activities; independent variable: GHQ-28 subscale scores and total score
Adjustment variables for multiple regression analysis (forced input): The common cause of the dependent and explanatory variables or the variable that appears to be the cause of each was used as the confounding factor. Time spent in the activities of ≥ 3 METs, walking exercise, age, number of family members (nuclear and joint families), and total home area
Amount of daily activities (METs-h/day): Value derived by multiplying PA (housework and child-rearing) of ≥ 3 METs with activity duration

ISSN: 1471-2393