Table 2: Cost efficiency of German hospitals, 2001-2003 frontier estimates In price_docs 0.081 0.127 0.082 (0.034) In price_ staff 0.321 0.299 340 (0.034) (0.033) 0.217 0.279 0.239 01 1.018 0.980 constant 2.832 2.470 2.640 ffects on inefficiency private 016 2.164 2.140 (0.955) (1.047) non-profit 1.087 ( no subs× private)t-1 (0.968) (1.127) (no subs xnon-profit)t-1 4.283 3.603 (0.913) (no-_ public)t-1 (1.214) (1.580) (1.708) east 0.664 1.327 3.830 surgery ratio 2.677 -3.307 2.026 (1.298) female ratio 4.503 4.502 5.318 (2285 constant 1.078 2.575 2.463 Log likelihood 1.549 Standard errors in parentheses. Price for nursing staff used for normalisation of prices and costs.Table 2: Cost efficiency of German hospitals, 2001-2003. ln adjusted costs 2001 2002 2003 frontier estimates ln price docs 0.081 0.127 0.082 (0.033) (0.033) (0.034) ln price other staff 0.321 0.299 0.340 (0.034) (0.034) (0.033) ln price bed 0.217 0.279 0.239 (0.016) (0.014) (0.014) ln weighted cases 1.018 0.980 0.997 (0.009) (0.008) (0.009) constant -2.832 -2.470 -2.640 (0.100) (0.094) (0.100) effects on inefficiency private 2.016 2.164 2.140 (0.730) (0.955) (1.047) non-profit 1.087 0.962 1.229 (0.454) (0.541) (0.666) (no subs×private)t−1 1.893 2.725 2.812 (0.586) (0.968) (1.127) (no subs×non-profit)t−1 2.656 4.283 3.603 (0.913) (1.591) (1.499) (no subs×public)t−1 3.472 3.641 3.476 (1.214) (1.580) (1.708) east 0.692 0.664 0.439 (0.327) (0.441) (0.404) plus75 ratio 1.327 3.830 3.364 (0.837) (1.533) (1.618) surgery ratio -2.677 -3.307 -2.026 (0.868) (1.298) (0.945) female ratio -4.503 -4.502 -5.318 (1.518) (1.740) (2.285) constant -1.078 -2.575 -2.463 (0.878) (1.555) (1.688) Log likelihood 234 236 259 Obs. 1,556 1,549 1,565 Standard errors in parentheses. Price for nursing staff used for normalisation of prices and costs. 8