From: Is quality costly? Patient and hospital cost drivers in vascular surgery
Variable name | Parameter estimate (2009 EURO’s) | Standard error | t value | Probability of estimate = 0 |
---|---|---|---|---|
Department 1 | 1,374* | 607 | 2.26 | 0.0236 |
Department 2 | 994 | 646 | 1.54 | 0.1240 |
Department 3 | 144 | 538 | 0.27 | 0.7891 |
Department 4 | −530 | 530 | −1.00 | 0.3171 |
Department 5 | −691 | 534 | −1.29 | 0.1959 |
Department 6 | 2,044* | 530 | 3.86 | 0.0001 |
Department 7 | −753 | 874 | −0.86 | 0.3889 |
Department 8 | 1,494* | 545 | 2.74 | 0.0061 |
Department 9 | 442 | 548 | 0.81 | 0.4199 |
2006 | 561* | 258 | 2.18 | 0.0296 |
2007 | 1,827* | 225 | 8.11 | < .0001 |
2008 | 314 | 244 | 1.29 | 0.1987 |
2009 | 1,093* | 228 | 4.79 | < .0001 |
DRG index | 4,832* | 245 | 19.75 | < .0001 |
DRG index squared | 709* | 52 | 13.72 | < .0001 |
Age less than 50 | −42 | 270 | −0.16 | 0.8764 |
Age 50-60 | 9 | 229 | 0.04 | 0.9690 |
Age 70-80 | 166 | 183 | 0.91 | 0.3642 |
Age 80-90 | 179 | 238 | 0.75 | 0.4505 |
Age 90+ | −1,443* | 654 | −2.21 | 0.0275 |
Woman | −571* | 149 | −3.84 | 0.0001 |
Daily smoker | −85 | 94 | −0.90 | 0.3681 |
BMI information missing | 1,221* | 453 | 2.70 | 0.0070 |
Underweight | −338 | 443 | −0.76 | 0.4457 |
Overweight | −2 | 195 | −0.01 | 0.9935 |
Obese | 340 | 263 | 1.29 | 0.1960 |
Very obese | −1,378 | 923 | −1.49 | 0.1354 |
Diabetes | −168 | 106 | −1.58 | 0.1132 |
Cerebral comorbidity | −146 | 83 | −1.76 | 0.0787 |
Hypertension | −357* | 124 | −2.87 | 0.0041 |
Cardiac comorbidity | 33 | 53 | 0.61 | 0.5390 |
Pulmonary comorbidity | 504* | 178 | 2.84 | 0.0045 |
Very acute admission | 2,340* | 555 | 4.22 | < .0001 |
Acute admission | 1,217* | 326 | 3.74 | 0.0002 |
Elective | 736* | 304 | 2.42 | 0.0155 |
Severity information missing | −322 | 409 | −0.79 | 0.4301 |
Moderate (ASA = 2) | −476* | 204 | −2.34 | 0.0195 |
Severe (ASA = 3) | −267 | 241 | −1.11 | 0.2681 |
Very severe/fatal (ASA > 3) | 1,552* | 464 | 3.35 | 0.0008 |
Lenght of stay | 549* | 10 | 53.59 | < .0001 |
30 days mortality | 3,872* | 423 | 9.15 | < .0001 |
Number of observations | 20,067 | Â | Â | Â |
R 2 | 0.62 | Â | Â | Â |