. 2017 Oct 30;5:e3949. doi: 10.7717/peerj.3949

Table 2. Results from multiple linear regression for associations with infants’ SSC with mothers the first and second day (24 h) after birth, respectively.

Significant p-values are printed in bold.

Day	Variable	Unadjusted		Full model^a		Trimmed model^b
		β (95% CI)	P	β (95% CI)	P	β (95% CI)	P
First	Mother’s age (years)	0.019 (−0.264: 0.302)	0.893	0.036 (−0.299; 0.371)	0.831	–^c
	Boy	−2.617 (−5.352; 0.119)	0.061	−2.881 (−5.936; 0.174)	0.064	−2.658 (−5.413; 0.098)	0.058
	Primipara	−1.641 (−4.437; 1.154)	0.245	−1.146 (−4.286; 1.994)	0.467	–^c
	Induction of childbirth	1.126 (−2.360; 4.611)	0.521	−0.394 (−4.143; 3.356)	0.834	–^c
	Caesarean section	−2.084 (−5.541; 1.373)	0.233	−3.250 (−7.322; 0.821)	0.115	−2.229 (−5.590; 1.133)	0.190
	Night-time birth	−0.030 (−2.849; 2.789)	0.983	−0.987 (−4.146; 2.173)	0.534	–^c
	Gestational age (weeks)	−0.396 (−2.928: 2.136)	0.756	−0.535 (−3.599; 2.530)	0.728	–^c
	Infant’s birthweight (kg)	−0.692 (−5.136; 3.752)	0.757	−1.789 (−6.798; 3.221)	0.477	–^c
	Supplementary artificial milk feeds given	−1.549 (−4.485; 1.387)	0.296	−2.164 (−6.320; 1.992)	0.301	−2.624 (−6.123; 0.875)	0.139
	Exclusive breastfeeding at discharge	−1.191 (−3.994; 1.612)	0.399	−2.601 (−6.262; 1.060)	0.160	−3.186 (−6.458; 0.087)	0.056
Second	Mother’s age (years)	−0.164 (−0.523; 0.196)	0.366	−0.245 (−0.662; 0.173)	0.245	–^c
	Boy	−3.823 (−7.286; −0.360)	0.031	−2.947 (−6.756; 0.862)	0.127	−3.276 (−6.757; 0.206)	0.065
	Primipara	−0.972 (−4.574; 2.630)	0.592	−1.573 (−5.488; 2.342)	0.424	–^c
	Induction of childbirth	0.087 (−4.380; 4.554)	0.969	−2.884 (−7.559; 1.791)	0.221	–^c
	Caesarean section	−0.275 (−4.742; 4.192)	0.902	−0.850 (−5.926; 4.227)	0.738	–^c
	Night-time birth	−1.421 (−5.005; 2.162)	0.431	−1.356 (−5.295; 2.583)	0.493	–^c
	Gestational age (weeks)	−0.382 (−3.618; 2.853)	0.814	−1.222 (−5.042; 2.599)	0.524	–^c
	Infant’s birthweight (kg)	−6.321 (−11.888; −0.755)	0.027	−8.482 (−14.727; −2.236)	0.009	−6.941 (−12.444; −1.438)	0.014
	Supplementary artificial milk feeds given	−2.425 (−6.159; 1.309)	0.199	−4.097 (−9.279; 1.085)	0.119	−2.530 (−6.262; 1.202)	0.180
	Exclusive breastfeeding at discharge	0.555 (−3.044; 4.154)	0.759	2.376 (−6.940; 2.189)	0.301	–^c

Notes.

First day: R² = 0.171; second day R² = 0.241.

First day: R² = 0.142; second day R² = 0.177.

Not in model.