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Table 2 Association between biomedical factors and very early introduction of solid foods (< 17 weeks) (n = 934)

From: Determinants for early introduction of complementary foods in Australian infants: findings from the HSHK birth cohort study

Variables Solids introduceda Solids introduceda Univariate odds ratiob
< 17 weeks ≥17 weeks
N (%) N (%) OR CI95
Parity
 Primiparous 61 (13.1) 406 (86.9) 1.00  
 Multiparous 66 (14.1) 401 (85.9) 1.09 0.75, 1.59
Infant gender
 Female 59 (12.9) 398 (87.1) 1.00  
 Male 68 (14.3) 409 (85.7) 1.12 0.77, 1.63
Infant birth weight
  ≥ 2500 g 121 (13.6) 767 (86.4) 1.00  
  < 2500 g 6 (13.0 40 (87.0) 0.95 0.39, 2.29
Gestational age
  ≥ 37 weeks 120 (13.9) 746 (86.1) 1.00  
  < 37 weeks 7 (10.3) 61 (89.7) 0.71 0.32, 1.60
Method of delivery
 Vaginal 94 (14.4) 558 (85.6) 1.00  
 Caesarean 33 (11.7) 249 (88.3) 0.79 0.52, 1.20
Breastfeeding initiation
 No 23 (30.7) 52 (69.3) 1.00  
 Yes 104 (12.1) 755 (87.9) 0.31*** 0.18, 0.53
Feeding method at 4 weeks
 Fully breastfed 62 (10.6) 524 (89.4) 1.00  
 Partially breastfed 13 (9.0) 131 (91.0) 0.84 0.45, 1.57
 Fully formula fed 52 (25.5) 152 (74.5) 2.89*** 1.92, 4.36
Smoking status of the mother postpartum
 No 100 (11.8) 751 (88.2) 1.00  
 Yes 27 (32.5) 56 (67.5) 3.62*** 2.19, 6.00
Smoking status of the mother during pregnancy
 No 108 (12.2) 775 (87.8) 1.00  
 Yes 19 (37.3) 32 (62.7) 4.26*** 2.33,7.78
Alcohol drinking status of the mother postpartum
 No 78 (12.3) 554 (87.7) 1.00  
 Yes 49 (16.2) 253 (83.8) 1.38 0.93, 2.03
Alcohol drinking status of the mother during pregnancy
 No 111 (13.2) 731 (86.8) 1.00  
 Yes 16 (17.4) 76 (82.6) 1.39 0.78, 2.46
  1. a The total of the categories do not always add up to 934 due to missing or incomplete data for some items
  2. b The univariate odds ratio indicates the likelihood of early introduction of solid foods
  3. OR odds ratio; CI95–95% confidence interval
  4. *** p < 0.001