Average prevalence rates, 1990–2010, of recorded diagnoses of Huntington's disease by age group (per 100 000)
| Age group (years) | Average population numbers | Average HD numbers | Average prevalence (95% CIs) |
|---|---|---|---|
| 21–25 | 202 852 | 4 | 2.0 (0.5 to 5.1) |
| 26–30 | 223 488 | 7 | 3.1 (1.3 to 6.5) |
| 31–35 | 240 698 | 15 | 6.2 (3.5 to 10.3) |
| 36–40 | 249 476 | 23 | 9.2 (5.8 to 13.8) |
| 41–45 | 241 745 | 28 | 11.6 (7.7 to 16.7) |
| 46–50 | 225 037 | 32 | 14.2 (9.7 to 20.1) |
| 51–55 | 208 745 | 33 | 15.81 (10.9 to 22.2) |
| 56–60 | 193 437 | 30 | 15.8 (10.5 to 22.1) |
| 61–65 | 169 441 | 26 | 15.3 (10.0 to 22.5) |
| 66–70 | 144 295 | 21 | 14.6 (9.0 to 22.3) |
| 71–75 | 125 812 | 13 | 10.3 (5.5 to 17.7) |
| 76–80 | 102 360 | 9 | 8.8 (4.0 to 16.7) |
| 81–85 | 72 092 | 4 | 5.6 (1.5 to 14.2) |
| 86+ | 59 105 | 1 | 1.7 (0 to 9.4) |
HD, Huntington's disease.