Table 5 False negative rates for various indices by outcome in population groups
Outcome | Number of patients in initial cohort | Number (%) of patients with outcome | Number (%) of patients classified as not having the outcome when likely to have using the; | |||
|---|---|---|---|---|---|---|
outcome-specific binary index | parsimonious index | CCI | ECM | |||
|  | Adults (> = 15 years) - all injuries | |||||
At least one overnight stay | 140,094 | 99,275 (70.9) | 30,093/99273 (30.3) | 30,059/99273 (30.3) | 30,868/99273 (31.1) | 30,008/99219 (30.2) |
All-cause 30-day readmission | 136,670 | 16,672 (12.2) | 6833/16672 (41.0) | 6803/16672 (40.8) | 6828/16672 (41.0) | 6790/16672 (40.7) |
Non-planned 30-day readmission | 136,670 | 11,150 (8.2) | 4440/11150 (39.8) | 4449/11150 (39.9) | 4527/11150 (40.6) | 4437/11150 (39.8) |
|  | Children (< 15 years) - all injuries | |||||
At least one overnight stay | 21,240 | 11,062 (52.1) | 3537/21194 (32.1) | 3537/21194 (32.1) | 3829/21238 (34.6) | 3827/21189 (34.8) |
All-cause 30-day readmission | 21,196 | 1274 (6.0) | 486/21179 (38.2) | 487/21179 (38.2) | 491/21183 (38.5) | 474/21141 (37.2) |
Non-planned 30-day readmission | 21,196 | 804 (3.8) | 303/21046 (37.7) | 303/21056 (37.7) | 303/21101 (37.7) | 343/21006 (42.7) |
|  | Patients 65 years and above | |||||
At least one overnight stay | 49,820 | 41,600 (83.5) | 11,092/49525 (26.9) | 11,163/49525 (27.0) | 11,806/49820 (28.4) | 11,097/49480 (26.9) |
All-cause 30-day readmission | 47,968 | 7948 (16.6) | 3589/47968 (45.2) | 3546/47968 (44.6) | 3609/47968 (45.4) | 3484 /47961 (43.8) |
Non-planned 30-day readmission | 47,968 | 5424 (11.3) | 2378/47968 (43.8) | 2373/47968 (43.8) | 2381/47968 (43.9) | 2287/47961 (42.2) |
| Â | Adult males | |||||
At least one overnight stay | 76,211 | 51,046 (67.0) | 16,312/76109 (32.0) | 16,336/76109 (32.1) | 16,670/76210 (32.7) | 16,334/76034 (32.1) |
All-cause 30-day readmission | 74,206 | 8359 (11.3) | 3280/74205 (39.2) | 3304/74205 (39.5) | 3272/74205 (39.1) | 3262/74205 (39.0) |
Non-planned 30-day readmission | 74,206 | 5626 (7.6) | 2157/74205 (38.3) | 2133/74205 (37.9) | 2143/74205 (38.1) | 2088/74205 (37.1) |
| Â | Adult females | |||||
At least one overnight stay | 63,883 | 48,229 (75.5) | 14,205/63702 (29.6) | 14,187/63702 (29.5) | 14,594/63882 (30.3) | 14,138/63675 (29.4) |
All-cause 30-day readmission | 62,464 | 8313 (13.3) | 3623/62463 (43.6) | 3602/62463 (43.3) | 3588/62463 (43.2) | 3570/62459 (42.9) |
Non-planned 30-day readmission | 62,464 | 5524 (8.8) | 2351/62463 (42.6) | 2292/62463 (41.5) | 2346/62463 (42.5) | 2301/62459 (41.7) |
| Â | Adults with non-severe injuries | |||||
At least one overnight stay | 119,916 | 79,942 (66.7) | 26,684/119915 (33.4) | 26,885/119915 (33.6) | 27,455/119915 (34.3) | 26,672/119889 (33.4) |
All-cause 30-day readmissiona | Â | Â | Â | Â | Â | Â |
Non-planned 30-day readmission | 117,951 | 9030 (7.7) | 3560/117950 (39.4) | 3553/117950 (39.4) | 3639/117950 (40.3) | 3570/117950 (39.5) |
| Â | Adults with intracranial injuryb | |||||
At least one overnight stay | 5456 | 4093 (75.0) | 883/5190 (23.1) | 886/5190 (23.2) | 915/5456 (22.4) | 882/5136 (23.4) |
All-cause 30-day readmission | 5026 | 633 (12.6) | 235/5026 (37.1) | 237/5026 (37.4) | 236/5026 (37.3) | 231/5026 (36.5) |
Non-planned 30-day readmission | 5026 | 492 (9.8) | 184/5026 (37.4) | 180/5026 (36.6) | 181/5026 (36.8) | 188/5018 (38.2) |
|  | Patients with hip fractures 45 years and abovec | |||||
At least one overnight stay | 161,334 | 110,337 (68.4) | 36,536/161332 (33.1) | 36,714/161332 (33.3) | 37,331/161332 (33.8) | 36,497/161277 (33.1) |
All-cause 30-day readmission | 7400 | 1115 (15.1) | 452/7400 (40.5) | 519/7400 (46.6) | 491/7400 (44.0) | 464/7394 (41.6) |
Non-planned 30-day readmission | 7400 | 818 (11.1) | 382/7400 (46.7) | 393/7400 (48.0) | 306/7400 (37.4) | 344/7394 (42.1) |
| Â | Adults with blunt traumad | |||||
At least one overnight stay | 94,698 | 71,004 (75.0) | 19,844/94629 (28.0) | 19,924/94629 (28.1) | 20,331/94696 (28.6) | 19,973/94545 (28.2) |
All-cause 30-day readmission | 92,217 | 12,169 (13.2) | 5174/92204 (42.5) | 5210/92204 (42.8) | 5201/92204 (42.7) | 5069/ 92,204 (41.7) |
Non-planned 30-day readmission | 92,217 | 8313 (9.0) | 3441/92204 (41.4) | 3423/92204 (41.2) | 3451/92204 (41.5) | 3380/92177 (40.7) |
| Â | Adults with penetrating traumae | |||||
At least one overnight stay | 13,313 | 7937 (59.6) | 3165/13262 (40.1) | 3161/13262 (40.1) | 3245/13313 (40.9) | 3143/13256 (39.9) |
All-cause 30-day readmission | 13,075 | 1058 (8.1) | 460/13071 (43.5) | 466/13071 (44.1) | 461/13071 (43.6) | 456/13045 (43.2) |
Non-planned 30-day readmission | 13,075 | 651 (5.0) | 270/13058 (41.5) | 270/13059 (41.5) | 291/13059 (44.7) | 275/13017 (42.2) |
|  | NSW validation (age > =15 years) | |||||
At least one overnight stay | 201,791 | 146,177 (72.4) | 46,323/146176 (31.7) | 46,336/146176 (31.7) | 46,670/146176 (31.9) | 46,102/146176 (31.5) |
All-cause 30-day readmission | 193,522 | 28,237 (14.6) | 11,911/28237 (42.2) | 11,815/28237 (41.8) | 11,956/28237 (42.3) | 11,999/28237 (42.5) |
Non-planned 30-day readmission | 193,522 | 15,988 (8.3) | 6209/15988 (38.8) | 6269/15988 (39.2) | 6321/15988 (39.5) | 6308/15988 (39.5) |
|  | WA validation (age > =15 years) | |||||
At least one overnight stay | 71,771 | 51,296 (71.5) | 17,114/51296 (33.4) | 17,181/51296 (33.5) | 17,409/51296 (33.9) | 17,072/51296 (33.3) |
All-cause 30-day readmission | 69,164 | 9132 (13.2) | 3592/9132 (39.3) | 3662/9132 (40.1) | 3647/ 9132 (39.9) | 3623/9132 (39.7) |
Non-planned 30-day readmission | 69,164 | 5684 (8.2) | 2093/5684 (36.8) | 2098/5684 (36.9) | 2162/5684 (38.0) | 2081/5684 (36.6) |