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Comparison of PD cases with CAG repeats ≤ 19 versus cases with CAG repeats > 19.
| N | Mean age (± S.D.) | Age range | |
|---|---|---|---|
| Familial PD | |||
| Larger repeat >19 | 196 | 62.3 ± 10.6 | 25 – 84 |
| Larger repeat ≤19 | 253 | 62.4 ± 11.3 | 27 – 88 |
| LRRK2 PD | |||
| Larger repeat >19 | 14 | 61.6 ± 8.2 | 50 – 75 |
| Larger repeat ≤19 | 21 | 60.0 ± 10.7 | 43 – 77 |
The Familial PD sample and the LRRK2 PD sample show no significant difference in onset age between the high repeat size and low repeat size categories.
