Multipredictor model of exclusive breastfeeding, including screen status and screen indications (n = 9709)*
| Variable | OR (95% CI) |
|---|---|
| Screened (≥ 3 measures v. < 3 measures) | 0.64 (0.56–0.73) |
| Screening indication | |
| None | Ref. |
| Preterm | 0.37 (0.23–0.58) |
| Small for GA | 0.37 (0.22–0.63) |
| Birthing parent with diabetes | 0.88 (0.69–1.10) |
| Large for GA | 1.03 (0.89–1.19) |
| Birth year | |
| 2014 | Ref. |
| 2015 | 0.92 (0.82–1.04) |
| 2016 | 0.70 (0.61–0.79) |
| 2017 | 0.71 (0.62–0.81) |
| 2018 | 0.92 (0.75–1.12) |
| Antenatal parity ≥ 1 | 1.86 (1.70–2.04) |
| Hypertension or pre-eclampsia | 0.89 (0.74–1.07) |
| Obesity | 0.82 (0.71–0.94) |
| Smoking by the birthing parent | 0.77 (0.64–0.92) |
| Social issues or perinatal inpatient drug screening | 0.57 (0.38–0.85) |
| Marital status divorced, single or widowed (v. married or common law) | 0.65 (0.55–0.77) |
| Pyrexia | 0.72 (0.52–0.99) |
| Induced | 0.84 (0.76–0.93) |
| Mode of birth | |
| Simple vaginal | Ref. |
| Assisted vaginal | 0.85 (0.73–1.01) |
| Elective cesarian | 0.80 (0.68–0.94) |
| Emergency cesarian | 0.79 (0.67–0.94) |
| 5-minute Apgar score ≥ 8 | 1.50 (1.00–2.24) |
| Brief postnatal CPAP | 1.13 (0.79–1.61) |
| Newborn cardiorespiratory issue | 0.93 (0.66–1.31) |
| Laceration | |
| None | Ref. |
| First or second degree | 0.94 (0.83–1.06) |
| Third or fourth degree | 0.90 (0.70–1.15) |
| Postpartum hemorrhage or anemia | 0.98 (0.84–1.13) |
| Birthing parent obstetric complication | 0.91 (0.83–0.99) |
Note: CI = confidence interval, CPAP = continuous positive airway pressure, GA = gestational age, OR = odds ratio, Ref. = reference category.
↵* The final step of the model is presented;1256 newborns were omitted owing to missing data. The tertiary binary logistic regression was also significant over null hypothesis (χ2(27) = 614; p < 0.001), and a small improvement over the second model (screening risk factors) (χ2(1) = 43; p < 0.001) with an Nagelkerke R square = 0.085.