Table 2.

Factors Predicting Length of Hospital Stay

Multiple Linear RegressionUnivariate Analysis
All patientsLevel of care(P < .001)Group A 251 level III patients
(Group A = 340)Group B 61 level III patients(P < .001)
(Group B = 137)Gestational age(P < .002)Group A 33.5 ± 4.9 wk
Group B 33.4 ± 3.9 wk(NS)
Birth weight(P = .034)Group A 2204 ± 1038 g
Group B 2216 ± 802 g(NS)
Physician group(P = .085)Group A LOS 34.8 ± 36.1 days
Group B LOS 36.0 ± 33.8 days(NS)
All level IIIGestational age(P = .006)Group A 32.8 ± 5.2 wk(P = .052)
(Group A = 251)Group B 31.4 ± 4.4 wk
(Group B = 61)Inborn(P = .037)Group A 108 inborn(P < .001)
Group B 48 inborn
Group A LOS 41.2 ± 39.3 days(P < .05)
Group B LOS 52.9 ± 37.1 days
Level IIIGestational age(P = .014)Group A 27.8 ± 2.3 wk
≤31 wkGroup B 27.9 ± 2.2 wk(NS)
(Group A = 114)Inborn(P = .027)Group A 74 Inborn
(Group B = 33)Group B 32 Inborn(P < .001)
Birth weight(P = .058)Group A 1145 ± 409 g
Group B 1163 ± 314 g(NS)
Group A LOS 62.6 ± 43.2 days
Group B LOS 64.9 ± 36.5 days(NS)
Level IIIPhysician group(P = .02)Group A LOS 23.4 ± 24.2 days
>31 wkGroup B LOS 38.9 ± 33.0 days(P < .005)
(Group A = 137)
(Group B = 28)
All level IIBirth weight(P = .007)Group A 2486 ± 697 g
(Group A = 89)Group B 2410 ± 645 g(NS)
(Group B = 76)Physician group(P = .048)Group A LOS 16.9 ± 13.8 days
Group B LOS 22.3 ± 23.4 days(P = .067)
• * Mean values expressed as ± sd.