Table 2.
Patient Characteristics by Hospitalisation Outcome and by Development/Validation Subsets.
| Characteristic | All Patients (n = 393229) | Hospitalised (n = 28402) | Not Hospitalised (n = 364827) | Training (70%) (N = 275259) | Testing (30%) (N = 117970) |
|---|---|---|---|---|---|
| Demographics | |||||
| Median Age (IQR) | 36 (23) | 41 (30) | 36 (22) | 36 (23) | 36 (23) |
| Gender, n (%) | |||||
| Male | 175472 (44.6) | 11683 (41.1) | 163789 (44.9) | 122830 (44.6) | 52642 (44.6) |
| Female | 217757 (55.4) | 16719 (58.9) | 201038 (55.1) | 152429 (55.4) | 65328 (55.4) |
| Ethnicity, n (%) | |||||
| Non-Indigenous Australian | 306345 (77.9) | 21985 (77.4) | 284360 (77.9) | 214340 (77.9) | 92005 (78) |
| Indigenous Australian | 1723 (0.4) | 205 (0.7) | 1518 (0.4) | 1216 (0.4) | 507 (0.4) |
| Unknown | 85161 (21.7) | 6212 (21.9) | 78949 (21.6) | 59703 (21.7) | 25458 (21.6) |
| SEIFA IRSAD, n (%) | |||||
| 5 | 51122 (13) | 4317 (15.2) | 46805 (12.8) | 35748 (13) | 15374 (13) |
| 1 | 34527 (8.8) | 3549 (12.5) | 30978 (8.5) | 24134 (8.8) | 10393 (8.8) |
| 2 | 4467 (1.1) | 343 (1.2) | 4124 (1.1) | 3123 (1.1) | 1344 (1.1) |
| 3 | 14081 (3.6) | 1357 (4.8) | 12724 (3.5) | 9916 (3.6) | 4165 (3.5) |
| 4 | 44804 (11.4) | 3325 (11.7) | 41479 (11.4) | 31240 (11.3) | 13564 (11.5) |
| 6 | 42649 (10.8) | 2729 (9.6) | 39920 (10.9) | 30018 (10.9) | 12631 (10.7) |
| 7 | 48160 (12.2) | 3040 (10.7) | 45120 (12.4) | 33708 (12.2) | 14452 (12.3) |
| 8 | 33561 (8.5) | 2067 (7.3) | 31494 (8.6) | 23502 (8.5) | 10059 (8.5) |
| 9 | 78010 (19.8) | 5368 (18.9) | 72642 (19.9) | 54584 (19.8) | 23426 (19.9) |
| 10 | 41090 (10.4) | 2248 (7.9) | 38842 (10.6) | 28771 (10.5) | 12319 (10.4) |
| Unknown | 758 (0.2) | 59 (0.2) | 699 (0.2) | 515 (0.2) | 243 (0.2) |
| Patient Observations | |||||
| BMI, n (%) | |||||
| <25 | 44391 (11.3) | 2794 (9.8) | 41597 (11.4) | 31092 (11.3) | 13299 (11.3) |
| [25, 30) | 38702 (9.8) | 2760 (9.7) | 35942 (9.9) | 27084 (9.8) | 11618 (9.8) |
| [30, 35) | 21581 (5.5) | 1939 (6.8) | 19642 (5.4) | 15130 (5.5) | 6451 (5.5) |
| [35, 40) | 8940 (2.3) | 902 (3.2) | 8038 (2.2) | 6303 (2.3) | 2637 (2.2) |
| 40+ | 5949 (1.5) | 727 (2.6) | 5222 (1.4) | 4199 (1.5) | 1750 (1.5) |
| Not recorded | 273666 (69.6) | 19280 (67.9) | 254386 (69.7) | 191451 (69.6) | 82215 (69.7) |
| Smoking Status, n (%) | |||||
| Non-smoker | 207007 (52.6) | 12715 (44.8) | 194292 (53.3) | 144885 (52.6) | 62122 (52.7) |
| Ex-smoker | 66174 (16.8) | 5573 (19.6) | 60601 (16.6) | 46360 (16.8) | 19814 (16.8) |
| Smoker | 77766 (19.8) | 6838 (24.1) | 70928 (19.4) | 54534 (19.8) | 23232 (19.7) |
| Unknown | 42282 (10.8) | 3276 (11.5) | 39006 (10.7) | 29480 (10.7) | 12802 (10.9) |
| Any Alcohol Consumption, n (%) | |||||
| Non-Drinker | 367040 (93.3) | 26400 (93) | 340640 (93.4) | 256956 (93.4) | 110084 (93.3) |
| Drinker | 16076 (4.1) | 1102 (3.9) | 14974 (4.1) | 11165 (4.1) | 4911 (4.2) |
| Not recorded | 10113 (2.6) | 900 (3.2) | 9213 (2.5) | 7138 (2.6) | 2975 (2.5) |
| Medications, n (%) | |||||
| Statins | 28314 (7.2) | 3795 (13.4) | 24519 (6.7) | 19795 (7.2) | 8519 (7.2) |
| AntiCoagulants | 6688 (1.7) | 1314 (4.6) | 5374 (1.5) | 4709 (1.7) | 1979 (1.7) |
| AntiDepressants | 12275 (3.1) | 1622 (5.7) | 10653 (2.9) | 8548 (3.1) | 3727 (3.2) |
| AntiPsychotics | 6582 (1.7) | 1324 (4.7) | 5258 (1.4) | 4629 (1.7) | 1953 (1.7) |
| AntiInflammatories | 105431 (26.8) | 9315 (32.8) | 96116 (26.3) | 73885 (26.8) | 31546 (26.7) |
| Steroids | 51120 (13) | 4958 (17.5) | 46162 (12.7) | 35875 (13) | 15245 (12.9) |
| Num. Diagnosis Families, n (%) | |||||
| 0 | 264048 (67.1) | 14486 (51) | 249562 (68.4) | 184564 (67.1) | 79484 (67.4) |
| 1 | 71943 (18.3) | 5862 (20.6) | 66081 (18.1) | 50609 (18.4) | 21334 (18.1) |
| 2 | 30888 (7.9) | 3307 (11.6) | 27581 (7.6) | 21649 (7.9) | 9239 (7.8) |
| 3 | 13947 (3.5) | 1961 (6.9) | 11986 (3.3) | 9793 (3.6) | 4154 (3.5) |
| 4 | 6578 (1.7) | 1195 (4.2) | 5383 (1.5) | 4571 (1.7) | 2007 (1.7) |
| 5 | 3129 (0.8) | 729 (2.6) | 2400 (0.7) | 2164 (0.8) | 965 (0.8) |
| 6 | 1528 (0.4) | 460 (1.6) | 1068 (0.3) | 1079 (0.4) | 449 (0.4) |
| 7 | 680 (0.2) | 211 (0.7) | 469 (0.1) | 477 (0.2) | 203 (0.2) |
| 8+ | 488 (0.1) | 191 (0.7) | 297 (0.1) | 353 (0.1) | 135 (0.1) |
| Diagnosis Groups, n (%) | |||||
| Respiratory | 32719 (8.3) | 3584 (12.6) | 29135 (8) | 22954 (8.3) | 9765 (8.3) |
| Atrial Fibrillation | 2975 (0.8) | 813 (2.9) | 2162 (0.6) | 2079 (0.8) | 896 (0.8) |
| Cardiovascular | 9185 (2.3) | 2206 (7.8) | 6979 (1.9) | 6423 (2.3) | 2762 (2.3) |
| Osteoarthritis | 16170 (4.1) | 2263 (8) | 13907 (3.8) | 11334 (4.1) | 4836 (4.1) |
| Osteoporosis | 5011 (1.3) | 910 (3.2) | 4101 (1.1) | 3497 (1.3) | 1514 (1.3) |
| Rheumatoid Arthritis | 1716 (0.4) | 268 (0.9) | 1448 (0.4) | 1186 (0.4) | 530 (0.4) |
| Mental Health | 45627 (11.6) | 5278 (18.6) | 40349 (11.1) | 32182 (11.7) | 13445 (11.4) |
| Cancer | 10067 (2.6) | 1544 (5.4) | 8523 (2.3) | 7038 (2.6) | 3029 (2.6) |
| Digestive | 12109 (3.1) | 1912 (6.7) | 10197 (2.8) | 8465 (3.1) | 3644 (3.1) |
| Hypertension | 35393 (9) | 4568 (16.1) | 30825 (8.4) | 24841 (9) | 10552 (8.9) |
| Bloodfats | 25333 (6.4) | 2617 (9.2) | 22716 (6.2) | 17745 (6.4) | 7588 (6.4) |
| Chronic Kidney Disease | 2344 (0.6) | 562 (2) | 1782 (0.5) | 1642 (0.6) | 702 (0.6) |
| Diabetes (type 1) | 1336 (0.3) | 284 (1) | 1052 (0.3) | 926 (0.3) | 410 (0.3) |
| Diabetes (type 2) | 14476 (3.7) | 2403 (8.5) | 12073 (3.3) | 10092 (3.7) | 4384 (3.7) |
| Venous Thromboembolism | 2151 (0.5) | 467 (1.6) | 1684 (0.5) | 1468 (0.5) | 683 (0.6) |
| Other Conditions | 2991 (0.8) | 520 (1.8) | 2471 (0.7) | 2107 (0.8) | 884 (0.7) |