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Completeness of data: death or requiring institutional care (outcome 4)
| Study | N(I) | n(I) | Dead(I) or instit | Missing(I) | N(C) | n(C) | Dead(C) or instit | Missing(C) |
| Cardiff 1995 | 55 | 55 | 9 + 16 = 25 | 0 | 55 | 54 | 11 + 18 = 29 | 1 |
| Nottingham 1997 | 53 | 53 | 5 + 1 = 6 | 0 | 58 | 58 | 7 + 7 = 14 | 0 |
| Glasgow 2000 | 67 | 67 | 6 + 4 = 10 | 0 | 71 | 71 | 5 + 4 = 9 | 0 |
