Reason(s) for the exclusion of false negatives
| Reason, n (%) | |
|---|---|
| Excluded first hip fractures (n=244) | |
| Transfer from another hospital | 90 (36.9) |
| Non-acute admission | 73 (29.9) |
| No hip operation | 27 (11.1) |
| Transfer from another hospital and non-acute admission | 54 (22.1) |
| Excluded second hip fractures (n=54) | |
| Transfer from another hospital and non-acute admission, and time to refracture <120 days and first-listed external cause codes identical to a previously admitted hip fracture | 54 (100) |