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Table 4 Results for univariate and multivariate linear regression models with the duration of any breastfeeding during the first 12 months after birth as the outcome

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

 Univariate regressionMultiple regressiona
VariablesR SquareAdjusted R SquareBeta-coefficientpBeta-coefficientp
Mother’s level of education (low/high)0.0660.0657.553< 0.0015.005< 0.001
Partner’s level of education (low/high)0.0350.0335.406< 0.0012.3400.044
Household income (low/high)0.0130.0123.2640.0010.0770.945
Mother’s age0.0530.0520.716< 0.0010.3200.049
Partner’s age0.0290.0280.443< 0.0010.1570.198
Gestational age0.0080.0060.7730.0130.5810.081
Single/multiple pregnancy0.0120.010−19.3810.002−13.3790.155
Mode of birth/start of delivery (spontaneous versus other)0.0110.010−3.5840.003− 1.3730.314
Mode of birth/end of delivery (normal versus instrumental/caesarean)0.0140.012−4.3520.001− 3.9300.004
The partner’s used and planned use of parental leave for the first 24 months0.0200.0190.124< 0.001
Total used and planned use of parental leave for the first 24 months0.0220.0210.102< 0.0010.097< 0.001
  1. aModel summary R2 = 0.143 Adjusted R2 = 0.130