Table 3.

Regression of CRS technical inefficiency scores against exploratory variables

Variables	Coefficient	Std. Err.	Z	P-value	95% CI
					Lower limit	Upper limit
Model 1 (CRSTE)
Catchment population (ref: "≤100,000")
100 001–200 000	0.258903	0.144427	1.79	0.087	− 0.04062	0.558426
> 200 000	0.093021	0.150426	0.62	0.543	− 0.21894	0.404985
Level of facility (ref: Small "50–150 beds")
Medium (150–300 beds)	− 0.26425	0.142891	− 1.85	0.078	− 0.56059	0.032083
Large (300–600 beds)	0.11657	0.177804	0.66	0.519	− 0.48531	0.252173
Location	0.017687	0.187435	0.09	0.926	− 0.37103	0.406403
Outpatient/doctor	0.000224	0.000135	1.65	0.113	− 5.7E−05	0.000504
Inpatient/doctor	− 0.00068	0.000252	− 2.69	0.013*	− 0.0012	− 0.00015
Ratio of beds to doctor	0.070006	0.045213	1.55	0.136	− 0.02376	0.163772
Outpatient/nurse	− 0.00981	0.004968	− 1.97	0.061	− 0.02011	0.000493
Inpatient/nurse	0.008444	0.007086	1.19	0.246	− 0.00625	0.02314
Ratio of beds to nurse	− 0.8223	1.188997	− 0.69	0.496	− 3.28813	1.643527
Average length of stay	0.027841	0.040708	0.68	0.501	− 0.05658	0.112263
Inpatient bed utilization rate	− 0.00191	0.003553	− 0.54	0.596	− 0.00928	0.005457
Outpatient/inpatient days	0.231625	0.613416	0.38	0.709	− 1.04052	1.503772
Exp. per PDE	− 0.0003	0.000123	− 2.44	0.023*	− 0.00056	− 4.5E−05
OPD not referred	− 6.30E−06	5.59E-06	− 1.13	0.272	− 1.8E−05	5.29E−06
Cons.	2.33511	1.187342	1.97	0.062	− 0.12729	4.797507
Sigma	0.040635	0.012537			0.02143	0.077053
Number of observations = 38
Log likelihood = − 0.8818
Chi-square (χ2) = 48.82
P-value = 0.0001

*significant at P < 0.05