Multipredictor model of exclusive breastfeeding, screening status divided by indication (n = 8297)*
| Variable | OR (95% CI) |
|---|---|
| < 3 glucose measures, screen not indicated | Ref. |
| Screened (≥ 3 measures), preterm | 0.23 (0.14–0.38) |
| Screened (≥ 3 measures), small for GA | 0.25 (0.14–0.44) |
| Screened (≥ 3 measures), birthing parent with diabetes | 0.57 (0.44–0.73) |
| Screened (≥ 3 measures), large for GA | 0.72 (0.59–0.87) |
| Birth year | |
| 2014 | Ref. |
| 2015 | 0.89 (0.78–1.01) |
| 2016 | 0.66 (0.58–0.76) |
| 2017 | 0.71 (0.62–0.81) |
| 2018 | 0.90 (0.72–1.11) |
| Antenatal parity ≥ 1 | 1.82 (1.64–2.01) |
| Hypertension or pre-eclampsia | 0.85 (0.70–1.04) |
| Obesity | 0.77 (0.67–0.90) |
| Smoking by the birthing parent | 0.80 (0.66–0.96) |
| Social issues or perinatal inpatient drug screening | 0.61 (0.40–0.94) |
| Marital status divorced, single or widowed (v. married or common law) | 0.66 (0.55–0.80) |
| Pyrexia | 0.70 (0.50–1.00) |
| Induced | 0.85 (0.77–0.95) |
| Mode of birth | |
| Simple vaginal | Ref. |
| Assisted vaginal | 0.91 (0.76–1.08) |
| Elective cesarian | 0.79 (0.66–0.93) |
| Emergency cesarian | 0.80 (0.67–0.97) |
| 5-minute Apgar score ≥ 8 | 1.55 (1.01–2.38) |
| Brief postnatal CPAP | 1.32 (0.89–1.96) |
| Newborn cardiorespiratory issue | 0.87 (0.59–1.26) |
| Laceration | |
| None | Ref. |
| First or second degree | 0.92 (0.80–1.04) |
| Third or fourth degree | 0.81 (0.62–1.05) |
| Postpartum hemorrhage or anemia | 0.96 (0.82–1.13) |
| Birthing parent obstetric complication | 0.90 (0.82–0.99) |
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; 2668 newborns were omitted owing to missing data. The logistic regression was significant over null hypothesis (χ2(26) = 499; p < 0.001), and a small improvement over the first model (Table 3) (χ2(4) = 96; p < 0.001) with an Nagelkerke R square = 0.078.