Table 4.

Multivariate Modeling of Length of Hospital Stay (LOHS).

Final Model**a Log likelihood (LL): −168.19
Variable	b	se	z	pb	LR χ2	pc
Constant	1.67	0.251	6.66	<0.001
Timed (mean = 14.91 days)	0.029	0.005	5.92	<0.001	40.38	<0.001
Race
Hispanic (n=15) v Caucasian  (n=16)	0.322	0.132	2.45	0.014
Hispanic (n=15) v African  American (n=14)	0.586	0.132	4.43	<0.001
BPRS Total Score (mean = 32.3)	0.028	0.007	3.87	<0.001
Hyperprolinemia (Yes, n=12 v No, n=33)	0.408	0.120	3.38	0.001	10.67	0.0011

^**n=45, df=5, χ²=51.05, p<0.0001

^aGamma distribution with log link

^bprobability >|z|

^cprobability of likelihood ratio (LR) statistic (p> χ²)

^dTime from admission to proline measurement