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Table 3 Crude and adjusted analyses for fat mass index at 18 years according to breastfeeding and introduction of complementary feeding during the first year of life, stratified by sex. 1993 Pelotas Birth Cohort

From: Breastfeeding and complementary feeding associated with body composition in 18–19 years old adolescents in the 1993 Pelotas Birth Cohort

Independent variables Male Female
Crude Adjusteda Crude Adjusteda
β CI95% Β CI95% Β CI95% β CI95%
 Total breastfeeding (months)   0.773 a   0.707 a   0.528 a   0.171 a
 Never Ref. (0)   Ref. (0)   Ref. (0)   Ref. (0)  
 0.01–1.00 0.45 −1.01, 1.92 0.90 −0.63, 2.44 0.06 −1.64, 1.76 −0.14 −1,89, 1.62
 1.01–3.00 0.07 −1.26, 1.40 0.23 −1.19, 1.65 −0.29 −1.83, 1.24 −0.89 −2.49, 0.73
 3.01–6.00 −0.05 −1.42, 1.32 0.29 −1.18, 1.75 −0.32 −1.40, 2.03 0.14 −1.61, 1.88
 6.01–12.00 0.51 −0.95, 1.97 0.55 −1.04, 2.13 0.91 −1.02, 2.85 0.60 −1.41, 2.61
  > 12.00 0.46 −1.05, 1.98 0.62 −0.94, 2.19 −0.29 −1.85, 1.26 −0.58 −2.20, 1.04
Breastfeeding   0.703 b   0.471 b   0.975 a   0.788 a
 No Ref. (0)   Ref. (0)   Ref. (0)   Ref. (0) Ref. (0)
 Yes 0.25 −1.03, 1.52 0.50 −0.86, 1.87 0.02 −1.46, 1.50 −0.21 −1.78, 1.35
Age of introduction of other milks c (months)   0.175 a   0.371 a   0.188 a   0.277 a
  < = 1.00 Ref. (0)   Ref. (0)   Ref. (0)   Ref. (0)  
 1.01–2.00 −0.55 −1.24, 0.14 −0.48 −1.17, 0.21 −0.90 −1.77, −0.03 −0.77 −1.65, 0.10
 2.01–3.00 −0.07 −1.05, 0.90 0.06 −0.89, 1.01 −0.20 −1.45, 1.06 0.05 −1.18, 1.28
 3.01–4.00 −0.59 −1.49, 0.31 −0.40 −1.30, 0.49 0.02 −1.37, 1.42 0.59 −0.75, 1.93
 4.01–5.00 0.31 −0.84, 1.46 0.09 −1.04, 1.22 −0.18 −1.84, 1.47 0.07 −1.46, 1.59
  > 5.00 0.89 −0.44, 2.22 0.79 −0.53, 2.11 −1.27 −2.46, −0.08 −0.57 −1.60, 0.46
Age of introduction of other foods d (months)   0.887 a   0.561 a   0.031 a   0.176 a
  < = 1.00 Ref. (0)   Ref. (0)   Ref. (0)   Ref. (0)  
 1.01–2.00 0.67 −1.33, 2.67 0.68 −1.28, 2.63 −0.17 −1.60, 1.26 0.18 −1.10, 1.46
 2.01–3.00 0.50 −1.41, 2.42 0.16 −1.72, 2.04 −0.43 −1.67, 0.81 −0.17 −1.23, 0.90
 3.01–4.00 0.38 −1.56, 2.32 −0.03 −1.93, 1.88 −0.85 −2.14, 0.45 −0.31 −1.45, 0.83
 4.01–5.00 0.89 −1.19, 2.98 0.59 −1.41, 2.59 0.61 −1.16, 2.39 0.86 −0.68, 2.41
  > 5.00 1.10 −1.57, 3.77 1.04 −1.55, 3.64 −1.99 −3.55, −0.43 −1.13 −2.51, 0.24
  1. Abbreviations: β regression coefficient, CI 95% 95% confidence interval. aTest for heterogeneity T test. bT test. cCow milk and formula. dFruits and vegetables and others
  2. Adjusted for maternal age, maternal skin color, maternal schooling, family income, maternal prepregnancy body mass index, maternal smoking during pregnancy, low birth weight and gestational age