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Table 6 Frontier estimation results – translog production function

From: Estimating technical efficiency of Turkish hospitals: implications for hospital reform initiatives

Variable Coef. Std. Error Z P > z 95% Conf. Interval
Frontier Model: dependent variable = log(output)
Inpatient hospital beds (log) −0.3904 0.2548 −1.5300 0.1250 −0.8899 0.1090
Non-doctor clinicians (log) 1.1531 0.3090 3.7300 0.0000 0.5474 1.7587
Doctors (log) − 0.4522 0.2831 −1.6000 0.1100 −1.0071 0.1027
Devices (log) 0.2977 0.2337 1.2700 0.2030 −0.1602 0.7557
Devices dummy (=1 if no device) −0.6614 0.2165 −3.0600 0.0020 −1.0857 − 0.2372
ICU beds (log) 2.5584 0.1710 14.9600 0.0000 2.2232 2.8937
ICU beds dummy (=1 if no beds) −0.0167 0.1205 −0.1400 0.8900 −0.2528 0.2194
Administrative staff (log) 0.3217 0.1278 2.5200 0.0120 0.0713 0.5722
lnbed2 0.0328 0.0436 0.7500 0.4510 −0.0526 0.1183
lnclinicians2 −0.1171 0.0752 −1.5600 0.1190 −0.2645 0.0302
lndoctors2 0.0903 0.0726 1.2400 0.2130 −0.0519 0.2325
lndevices2 0.0221 0.0270 0.8200 0.4130 −0.0308 0.0750
lnicubeds2 0.1862 0.0259 7.1800 0.0000 0.1354 0.2371
lnadmin2 0.0194 0.0196 0.9900 0.3210 −0.0189 0.0578
lnbed × lnclinicians 0.1086 0.1035 1.0500 0.2940 −0.0942 0.3113
lnbed × lndoctors −0.1246 0.1150 −1.0800 0.2790 −0.3500 0.1009
lnbed × lndevices −0.0157 0.0941 −0.1700 0.8670 −0.2002 0.1687
lnbed × lnicubeds −0.0876 0.0578 −1.5200 0.1290 −0.2008 0.0256
lnbed × lnadmin 0.0598 0.0542 1.1000 0.2700 −0.0464 0.1660
lnclinicians × lndoctors 0.2428 0.1102 2.2000 0.0280 0.0269 0.4587
lnclinicians × lndevices −0.0267 0.1076 −0.2500 0.8040 −0.2377 0.1842
lnclinicians × lnicubeds −0.2386 0.0606 −3.9400 0.0000 −0.3574 −0.1198
lnclinicians × lnadmin −0.2112 0.0566 −3.7300 0.0000 −0.3221 −0.1002
lndoctors × lndevices −0.1513 0.1005 −1.5100 0.1320 −0.3483 0.0457
lndoctors × lnicubeds −0.1510 0.0571 −2.6400 0.0080 −0.2629 −0.0391
lndoctors × lnadmin 0.0583 0.0691 0.8400 0.3990 −0.0771 0.1938
lndevices × lnicubeds 0.0362 0.0457 0.7900 0.4280 −0.0533 0.1257
lndevices × lnadmin 0.1196 0.0521 2.3000 0.0220 0.0176 0.2216
lnicubeds × lnadmin −0.0522 0.0327 −1.6000 0.1100 −0.1162 0.0118
Constant 8.5814 0.5541 15.4900 0.0000 7.4953 9.6675