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Table 4 Adjusted multivariable logistic regression, associations between intrapartum interventions and breastfeeding outcomes at 3-months and 6-months post-partum

From: The association between intrapartum interventions and immediate and ongoing breastfeeding outcomes: an Australian retrospective population-based cohort study

  Exclusive breastfeeding at 3-months Any breastfeeding at 3-months Exclusive breastfeeding at 6-months Any breastfeeding at 6-months
N (%) AdjORa (95% CI) P-value N (%) AdjORa (95% CI) P-value N (%) AdjORa (95% CI) P-value N (%) AdjORa (95% CI) P-value
Method of Birth
 Vaginal Birth 32,636 (54.9) 1 43,211 (72.7) 1 9622 (15.2) 1 36,446 (57.7) 1
 Pre-labour CS 8789 (47.9) 0.73 (0.71–0.76) < 0.001 12,308 (67.1) 0.70 (0.68–0.73) < 0.001 2512 (13.0) 0.81 (0.77–0.86) < 0.001 9781 (50.6) 0.72 (0.69–0.74) < 0.001
 In-labour CS 5278 (46.9) 0.79 (0.76–0.83) < 0.001 7569 (69.2) 0.79 (0.75–0.83) < 0.001 1579 (13.1) 0.88 (0.82–0.93) < 0.001 6172 (51.2) 0.80 (0.77–0.84) < 0.001
Epidural Analgesia
 No 34,776 (54.3) 1 46,289 (72.3) 1 10,166 (15.0) 1 38,949 (57.4) 1
 Yes 11,927 (47.6) 0.77 (0.75–0.80) < 0.001 16,799 (67.1) 0.77 (0.74–0.80) < 0.001 3547 (13.3) 0.89 (0.85–0.93) < 0.001 13,451 (50.5) 0.76 (0.74–0.78) < 0.001
Synthetic Oxytocin Infusion
 No 32,052 (54.2) 1 42,607 (72.1) 1 9429 (15.0) 1 35,711 (56.8) 1
 Yes 14,651 (48.9) 0.89 (0.86–0.92) < 0.001 20,481 (68.4) 0.91 (0.88–0.94) < 0.001 4284 (13.5) 0.95 (0.91–0.99) < 0.001 16,689 (52.8) 0.92 (0.90–0.95) < 0.001
Number of Interventions Received
 None 18,014 (59.2) 1 23,096 (75.9) 1 5361 (16.6) 1 20,073 (62.0) 1
 One 18,935 (50.2) 0.71 (0.68–0.73) < 0.001 26,070 (69.1) 0.70 (0.66–0.72) < 0.001 5431 (13.6) 0.82 (0.79–0.86) < 0.001 21,143 (53.0) 0.69 (0.67–0.72) < 0.001
 Two 7524 (47.6) 0.65 (0.63–0.68) < 0.001 10,642 (67.3) 0.65 (0.62–0.68) < 0.001 2258 (13.4) 0.82 (0.78–0.87) < 0.001 8570 (51.0) 0.66 (0.63–0.69) < 0.001
 Three 2197 (43.7) 0.60 (0.56–0.64) < 0.001 3236 (64.3) 0.58 (0.53–0.62) < 0.001 648 (12.2) 0.75 (0.68–0.83) < 0.001 2576 (48.4) 0.61 (0.57–0.65) < 0.001
  1. Abbreviations: OR odds ratio, CI confidence interval
  2. a Adjusted for parity, maternal BMI, SEIFA quintile, smoking status during pregnancy, hospital admission status, maternal age, maternal country region of birth, and infant birth weight