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Table 3 Regression coefficient of height-for-age (z-score) according linear mixed effect model

From: Effect of tobacco smoke exposure during pregnancy and preschool age on growth from birth to adolescence: a cohort study

  Coefficient Standard error p-value
Maternal smoking    
  During both periods −0.33 0.077 <0.001
  Only during preschool age −0.05 0.100 0.67
  Only during pregnancy −0.20 0.140 0.15
  No smoking - - -
Time*Maternal smoking    
  During both periods 0.004 0.008 0.57
  Only during preschool age −0.02 0.013 0.09
  Only during pregnancy 0.01 0.016 0.52
  No smoking - - -
Age 0.04 0.002 <0.001
Gender    
  Male −0.06 0.035 0.05
  Female - - -
Maternal height 0.04 0.002 <0.001
Economic class 0.07 0.02 <0.001
Breastfeeding    
  Yes −0.06 0.04 0.18
  No - - -