Table 3.
Univariate summary of clusters from mixture analysis
| Group (n) | MC1 (42) | MC2 (21) | MC3 (63) | Lowest 2 vs. highest | NMC1 (7) | NMC2 (37) | NMC3 (81) | Lowest 2 vs. highest |
|---|---|---|---|---|---|---|---|---|
| UPSIT | 12.6 ± 3.0 | 20.6 ± 1.0 | 30.3 ± 3.9 | <0.001 | 16.4 ± 4.9 | 29.3 ± 2.0 | 35.6 ± 1.9 | <0.001 |
| Hyposmia (%) | 97.6 | 71.4 | 20.6 | <0.001 | 71.4 | 59.5 | 11.1 | <0.001 |
| Women (%) | 40.5 | 38.1 | 49.2 | 0.28 | 42.9 | 43.3 | 61.7 | 0.05 |
| Age | 67.7 ± 9.1 | 68.3 ± 8.7 | 67.0 ± 9.7 | 0.78 | 68.9 ± 20.0 | 55.0 ± 13.3 | 50.1 ± 14.5 | 0.01 |
| Duration PD (years) | 9.9 ± 8.0 | 8.9 ± 6.4 | 7.2 ± 6.0 | 0.07 | ||||
| Duration ≥3 years (%) | 83.3 | 85.7 | 69.4 | 0.05 | ||||
| Age onset | 56.8 ± 10.6 | 57.6 ± 10.8 | 58.2 ± 10.3 | 0.40 | ||||
| US (%) | 45.2 | 52.4 | 61.9 | 0.11 | 42.9 | 10.8 | 49.4 | <0.001 |
| Ever smoke (%) | 56.1 | 52.4 | 47.5 | 0.42 | 42.9 | 31.4 | 41.3 | 0.39 |
| MoCA | 25.6 ± 3.1 | 24.8 ± 3.1 | 25.4 ± 2.8 | 0.80 | 24.3 ± 2.9 | 25.9 ± 2.6 | 27.0 ± 2.5 | <0.01 |
| UPDRS-III | 23.5 ± 12.4 | 28.7 ± 15.5 | 18.6 ± 9.7 | 0.01 | 6.4 ± 4.8 | 3.4 ± 4.3 | 2.4 ± 5.3 | 0.001 |
All values are mean ± SD. MC, manifesting carrier; NMC, nonmanifesting carrier; 3, lowest scoring group; 1, highest scoring group; UPSIT, University of Pennsylvania Smell Identification Test; MoCA, Montreal Cognitive Assessment; UPDRS, Unified Parkinson’s Disease Rating Scale.