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Table 2 Results for univariate and multivariate linear regression models with duration of breastfeeding during the first year after birth as the outcome

From: The association between early introduction of tiny tastings of solid foods and duration of breastfeeding

 

Univariate regression

 

Multiple regression*

 

Variables

R Square

Adjusted R Square

Beta-coefficient

p

95,0% Confidence Interval for B

Beta-coefficient

p

95,0% Confidence Interval for B

Mother’s age

0.061

0.060

0.186

< 0.001

0.145

0.227

0.181

< 0.001*

0.130

0.232

Mother’s level of education

0.055

0.054

0.574

< 0.001

0.440

0.708

0.263

0.002*

0.099

0.426

Mother’s country of birth (outside versus inside Sweden)

0.004

0.003

0.821

< 0.001

0.083

1.559

0.279

0.496

-0.525

1.082

Household income

0.014

0.013

0.221

< 0.001

0.117

0.325

0.032

0.606

-0.090

0.154

Maternal leave during the first year

0.004

0.003

0.105

0.033

0.009

0.201

0.070

0.147

-0.025

0.166

Maternal Body Mass Index

0.035

0.034

-0.146

< 0.001

-0.190

-0.103

-0.129

< 0.001*

-0.177

-0.081

Pregnancy (single versus multiple)

0.010

0.009

-5.135

< 0.001

-8.027

-2.242

-4.057

0.032*

-7.768

-0.346

Mode of birth/end of delivery (normal versus instrumental/ caesarean)

0.005

0.004

-0.273

0.020

-0.502

-0.043

-0.120

0.322

-0.356

0.117

Age for introduction of solid foods (tiny tastings, tastings, or food)

0.044

0.043

0.703

< 0.001

0.520

0.886

0.590

< 0.001*

0.389

0.790

  1. * P < 0.05
  2. * Model summary R2 = 0.177 Adjusted R2 = 0.169