Longer shared parental leave is associated with longer duration of breastfeeding: a cross-sectional study among Swedish mothers and their partners

Table 3 Results for univariate and multivariate linear regression models with the duration of exclusive breastfeeding during the first 12 months after birth as the outcome

	Univariate regression				Multiple regression^a
Variables	*R Square*	*Adjusted R Square*	*Beta-coefficient*	p	*Beta-coefficient*	p
Mother’s level of education (low/high)	0.020	0.018	2.145	< 0.001	1.723	0.004
Mother’s age	0.011	0.010	0.171	0.003	0.060	0.391
Gestational age	0.006	0.004	0.341	0.034	0.299	0.089
Previous children	0.021	0.019	2.152	< 0.001	1.826	0.002
Pregnancy, single versus multiple	0.013	0.012	−11.034	0.001	−10.022	0.045
Mode of birth/start of delivery (spontaneous versus other)	0.027	0.025	−2.870	< 0.001	− 2.001	0.006
Haemorrhage in connection with delivery	0.008	0.007	−2.634	0.011	− 1.639	0.133
Mode of birth/end of delivery (normal versus instrumental/ caesarean)	0.023	0.022	−2.962	< 0.001	− 1.919	0.011
The mother’s used and planned use of parental leave for the first 24 months	0.005	0.004	0.032	0.038	–	–
Total used and planned use of parental leave for the first 24 months	0.007	0.006	0.030	0.016	0.038	0.003

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