TABLE 2.
Results of Multivariable Linear Regression Models
| Outcome and Group Comparison | Mean Difference | P | Lower 95% CI | Upper 95% CI |
|---|---|---|---|---|
| Length of hospital stay | ||||
| Morphine versus M + P | −7.22 | <.0001 | −9.70 | −4.75 |
| Morphine versus M + C | −17.48 | <.0001 | −19.59 | −15.38 |
| M + P versus M + C | −10.26 | <.0001 | −13.21 | −7.31 |
| Length of morphine treatment | ||||
| Morphine versus M + P | −6.19 | <.0001 | −8.49 | −3.88 |
| Morphine versus M + C | −13.70 | <.0001 | −15.67 | −11.72 |
| M + P versus M + C | −7.51 | <.0001 | −10.27 | −4.75 |
| Peak morphine dose mg/kg | ||||
| Morphine versus M + P | −0.017 | <.0001 | −0.026 | −0.008 |
| Morphine versus M + C | −0.008 | .037 | −0.015 | −0.0005 |
| M + P versus M + C | 0.010 | .072 | −0.0008 | 0.019 |
Morphine; M + P; M + C; covariates included race and ethnicity, infant sex, maternal polysubstance use; type of maternal opioid, >1 opioid, and hospital volume.