TABLE 3.

Logistic regression for 30-day ED return in the population stratified by age and sex

	≤ 50 Yr & F (n=82)a			≤ 50 Yr & M (n=364)
Variable	Point Estimate (OR)	95% Wald Confidence Limits		Point Estimate (OR)	95% Wald Confidence Limits
Site	0.686	0.255	1.842	0.899	0.578	1.400
Visits	0.922	0.781	1.089	0.995	0.996	1.025
Disposition	1.012	0.546	1.876	0.942	0.721	1.229
PCP Access	2.254	0.455	11.173	1.266	0.915	1.752
Psych Dx	<0.001	<0.001	>999.999	0.974	0.528	1.797
A1C (Int + Cov)	90.947			466.035
	> 50 Yr & F (n=188)			> 50 Yr & M (n=696)
Variable	Point Estimate (OR)	95% Wald Confidence Limits		Point Estimate (OR)	95% Wald Confidence Limits
Site	0.505	0.228	1.119	0.535	0.357	0.802
Visits	1.078	0.955	1.217	0.965	0.920	1.011
Disposition	0.585	0.362	0.949	0.872	0.678	1.122
PCP Access	3.293	1.212	8.946	0.978	0.768	1.245
Psych Dx	1.047	0.428	2.564	1.187	0.777	1.813
A1C (Int + Cov)	172.821			655.279

^aQuasi-complete separation of data.