Table 4.
Multiple Linear Regression for Length of Stay
| EXPLANATORY VARIABLES | DF | ESTIMATE | SE | 95% CI | CHI-SQUARE | Pr > ChiSq | |
|---|---|---|---|---|---|---|---|
| Intercept | 1 | 122.1797 | 19.0883 | 84.7673 | 159.5920 | 40.97 | <0.0001 |
| Gestational weeks | 1 | −3.2315 | 0.5716 | −4.3518 | −2.1112 | 31.96 | <0.0001 |
| Race | 6 | NS | |||||
| Sex | |||||||
| Female | 1 | 0.0933 | 0.9037 | −1.6780 | 1.8646 | 0.01 | 0.9178 |
| Male | 0 | Reference | |||||
| Inborn or outborn | |||||||
| Inborn | 0.8774 | 1.3149 | −1.6998 | 3.4546 | 0.45 | 0.5046 | |
| Outborn | 0 | Reference | |||||
| APGAR score at 5 min | 1 | 0.2829 | 0.3613 | −0.4253 | 0.9911 | 0.61 | 0.4337 |
| Location | |||||||
| CCMH | 1 | −3.0156 | 0.9491 | −4.8758 | −1.1555 | 10.10 | 0.0015 |
| OUMC | 0 | Reference | |||||
| Surfactant dose | |||||||
| No | 1 | −2.0807 | 1.2058 | −4.4439 | 0.2826 | 2.98 | 0.0844 |
| Yes | 0 | Reference | |||||
| Scale | 1 | 4.2379 | |||||
CCMH, Comanche County Memorial Hospital; CI, confidence interval; OUMC, Oklahoma University Medical Center.