UK presymptomatic tests for HD, 1988–1997 (n=2928)
| Type of test |
Linked genetic marker (n=426) | Specific mutation (n=2502) |
Combined (n=2928) |
| Outcome | |||
| High risk | 180 (42.3%) | 1016 (40.6%) | 1196 (40.8%) |
| Low risk | 240 (56.3%) | 1448 (57.9%) | 1688 (57.7%) |
| Uncertain/intermediate | 6 (1.4%) | 38 (1.5%) | 44 (1.5%) |
| Sex distribution | |||
| Male | 168 (39.4%) | 1047 (41.8%) | 1215 (41.5%) |
| Female | 258 (60.6%) | 1444 (57.7%) | 1702 (58.1%) |
| Unknown | 0 | 11 (0.4%) | 11 (0.4%) |
| Prior genetic risk | |||
| 50% | 398 (93.4%) | 2324 (92.9%) | 2722 (93.0%) |
| 25% | 24 (5.6%) | 178 (7.1%) | 202 (7.1%) |
| Unknown | 4 (0.9%) | 0 | 4 (0.2%) |