Table 7.
Main effects parameter coefficients (dy/dx) for probit and eprobit
| Probit | eProbit | |||||||
|---|---|---|---|---|---|---|---|---|
| dy/dx | P-value | 95% CI (lower) | 95% CI (upper) | dy/dx | P-value | 95% CI (lower) | 95% CI (upper) | |
| Age_centered | 0.0001 | 0.5810 | −0.0002 | 0.0004 | 0.0001 | 0.3890 | −0.0002 | 0.0004 |
| APIII score_centered | 0.0002 | 0.1570 | −0.0001 | 0.0004 | 0.0022 | 0.0000 | 0.0020 | 0.0025 |
| Gender | ||||||||
| Female | 0.0000 | 0.0000 | ||||||
| Male | 0.0001 | 0.9700 | −0.0029 | 0.0030 | 0.0000 | 0.9810 | − 0.0026 | 0.0026 |
| AP III diagnostic codes | ||||||||
| Cardiovascular_medical | 0.0000 | 0.0000 | ||||||
| Respiratory medical | −0.0056 | 0.0330 | −0.0107 | − 0.0005 | 0.0038 | 0.4040 | −0.0052 | 0.0128 |
| Liver_GIS_medical | −0.0025 | 0.5190 | −0.0100 | 0.0050 | −0.0166 | 0.0120 | −0.0296 | −0.0036 |
| CNS_medical | 0.0123 | 0.0000 | 0.0063 | 0.0183 | −0.0030 | 0.6480 | −0.0158 | 0.0098 |
| Sepsis | −0.0103 | 0.0000 | −0.0156 | −0.0050 | − 0.0128 | 0.1330 | − 0.0296 | 0.0039 |
| Trauma | 0.0050 | 0.2280 | −0.0031 | 0.0132 | −0.0213 | 0.0180 | −0.0388 | −0.0037 |
| Metabolic Hormonal | 0.0006 | 0.9110 | −0.0107 | 0.0120 | −0.1066 | 0.0000 | −0.1178 | −0.0955 |
| Haematologic | −0.0065 | 0.4590 | −0.0237 | 0.0107 | 0.0352 | 0.2230 | −0.0214 | 0.0918 |
| Renal_GUS | −0.0244 | 0.0000 | −0.0349 | −0.0140 | − 0.0839 | 0.0000 | − 0.0975 | −0.0702 |
| Other medical disorders | 0.0142 | 0.3020 | −0.0128 | 0.0413 | −0.0472 | 0.0070 | −0.0815 | −0.0130 |
| Musculoskeletal / Skin | −0.0074 | 0.5730 | −0.0329 | 0.0182 | −0.0583 | 0.0000 | −0.0879 | −0.0287 |
| Cardio-Vascular surgery | −0.0006 | 0.9070 | −0.0103 | 0.0091 | −0.0710 | 0.0000 | −0.0875 | −0.0545 |
| Thoracic surgery | 0.0264 | 0.0070 | 0.0071 | 0.0457 | −0.0536 | 0.0000 | −0.0742 | −0.0329 |
| GIS surgery | −0.0015 | 0.6730 | −0.0085 | 0.0055 | −0.0481 | 0.0000 | −0.0615 | −0.0346 |
| CNS surgery | 0.0141 | 0.0150 | 0.0027 | 0.0254 | 0.0168 | 0.1070 | −0.0036 | 0.0373 |
| Traumatic/Orthopaedic surgery | 0.0004 | 0.9470 | −0.0107 | 0.0114 | −0.0475 | 0.0000 | −0.0664 | −0.0286 |
| Renal_GUS surgery | −0.0176 | 0.1000 | −0.0387 | 0.0034 | −0.0998 | 0.0000 | −0.1148 | −0.0848 |
| Gynaecological | 0.0834 | 0.0540 | −0.0014 | 0.1681 | −0.1142 | 0.0000 | −0.1380 | −0.0904 |
| Musculoskeletal / Skin Surgery | 0.0004 | 0.9530 | −0.0138 | 0.0147 | −0.0672 | 0.0000 | −0.0814 | −0.0530 |
| Metabolic Surgery | 0.0427 | 0.2800 | −0.0348 | 0.1201 | −0.0854 | 0.0000 | −0.1286 | −0.0421 |
| Cardiovascular surgery elective | −0.0073 | 0.1330 | −0.0168 | 0.0022 | −0.1179 | 0.0000 | −0.1302 | −0.1056 |
| Thoracic surgery elective | −0.0074 | 0.5570 | −0.0320 | 0.0172 | −0.0839 | 0.0000 | −0.1056 | −0.0622 |
| GIS surgery elective | −0.0179 | 0.0040 | −0.0300 | −0.0059 | − 0.0885 | 0.0000 | − 0.0998 | −0.0771 |
| CNS surgery elective | 0.0227 | 0.0980 | −0.0042 | 0.0496 | −0.0685 | 0.0000 | −0.0916 | −0.0453 |
| Traumatic/Orthopaedic surgery el | −0.0345 | 0.1880 | −0.0857 | 0.0168 | −0.0946 | 0.0000 | −0.1302 | −0.0591 |
| Renal_GUS surgery elective | 0.0220 | 0.2250 | −0.0135 | 0.0575 | −0.0972 | 0.0000 | −0.1185 | −0.0760 |
| Gynaecological surgery elective | −0.0491 | 0.1040 | −0.1084 | 0.0101 | −0.1264 | 0.0000 | −0.1414 | −0.1114 |
| Musculoskeletal / Skin Surgery el | −0.0058 | 0.5760 | −0.0262 | 0.0146 | −0.0982 | 0.0000 | −0.1151 | −0.0813 |
| Annual volume_deciles | ||||||||
| Base | 0.0000 | 0.0000 | ||||||
| 2 | 0.0016 | 0.6740 | −0.0058 | 0.0090 | 0.0010 | 0.7740 | −0.0058 | 0.0077 |
| 3 | 0.0092 | 0.0180 | 0.0016 | 0.0167 | 0.0064 | 0.0690 | −0.0005 | 0.0134 |
| 4 | 0.0017 | 0.7270 | −0.0080 | 0.0114 | 0.0085 | 0.1110 | −0.0020 | 0.0190 |
| 5 | −0.0008 | 0.8430 | −0.0090 | 0.0074 | 0.0023 | 0.5740 | −0.0057 | 0.0104 |
| 6 | 0.0047 | 0.2750 | −0.0038 | 0.0133 | 0.0050 | 0.2680 | −0.0038 | 0.0138 |
| 7 | 0.0032 | 0.4300 | −0.0048 | 0.0112 | 0.0129 | 0.0040 | 0.0042 | 0.0217 |
| 8 | 0.0020 | 0.6310 | −0.0063 | 0.0104 | 0.0066 | 0.1300 | −0.0020 | 0.0152 |
| 9 | −0.0030 | 0.5860 | −0.0139 | 0.0078 | −0.0042 | 0.4180 | −0.0145 | 0.0060 |
| 10 | −0.0047 | 0.2280 | −0.0125 | 0.0030 | −0.0022 | 0.6290 | −0.0112 | 0.0068 |
| Hospital classification | ||||||||
| Metropolitan | 0.0000 | 0.0000 | ||||||
| Private | 0.0145 | 0.0000 | 0.0089 | 0.0201 | 0.0124 | 0.0000 | 0.0071 | 0.0178 |
| Rural / Regional | 0.0034 | 0.2420 | −0.0023 | 0.0092 | 0.0062 | 0.0260 | 0.0007 | 0.0117 |
| Tertiary | 0.0164 | 0.0000 | 0.0120 | 0.0209 | 0.0117 | 0.0010 | 0.0049 | 0.0184 |
| Ventilation status | ||||||||
| Not-ventilated | 0.0000 | 0.0000 | ||||||
| Ventilated | −0.0058 | 0.0010 | −0.0093 | −0.0023 | 0.0309 | 0.0710 | −0.0026 | 0.0645 |