Table 1.
Characteristics of study subjects.
| Overall (4,190) | PD (3,367) | Parkinsonism (823) | P value | ||
|---|---|---|---|---|---|
| Gender (n, %) | χ2 = 0.299 | 0.585 | |||
| Male | 2,555 (61.0) | 2,060 (61.2) | 495 (60.1) | ||
| Female | 1,635 (39.0) | 1,307 (38.8) | 328 (39.9) | ||
| Age (mean, SD; y) | 68.3 (11.4) | 67.9 (11.4) | 69.8 (11.5) | t = 4.258 | <0.001 |
| <50 | 279 | 234 (6.9) | 45 (5.5) | χ2 = 25.946 | <0.001 |
| 50–59 | 628 | 536 (15.9) | 92 (11.2) | ||
| 60–69 | 1,132 | 929 (27.6) | 203 (24.7) | ||
| 70–79 | 1476 | 1,153 (34.2) | 323 (39.2) | ||
| 80+ | 675 | 515 (15.3) | 160 (19.4) | ||
| ECI (mean, SD) | 1.0 (1.2) | 1.0 (1.2) | 1.1 (1.2) | t = 2.613 | <0.001 |
| 0 | 1849 | 1,507 (44.8) | 342 (41.6) | χ2 = 12.959 | 0.024 |
| 1 | 1,201 | 980 (29.1) | 221 (26.9) | 0.040 a | |
| 2 | 689 | 538 (16.0) | 151 (18.3) | ||
| 3 | 258 | 192 (5.7) | 66 (8.0) | ||
| 4 | 130 | 98 (2.9) | 32 (3.9) | ||
| 5+ | 63 | 52 (1.5) | 11 (1.3) | ||
| CCI (mean, SD) | 1.1 (1.5) | 1.1 (1.5) | 1.3 (1.6) | t = 3.450 | <0.001 |
| 0 | 1,746 | 1,433 (42.6) | 313 (38.0) | χ2 = 28.929 | <0.001 |
| 1 | 1,361 | 1,110 (33.0) | 251 (30.5) | 0.251a | |
| 2 | 513 | 405 (12.0) | 108 (13.1) | ||
| 3 | 271 | 191 (5.7) | 80 (9.7) | ||
| 4 | 136 | 97 (2.9) | 39 (4.7) | ||
| 5+ | 163 | 131 (3.9) | 32 (3.9) |
a P values after adjustment for the influence of age on the comorbidity burden with the general linear model.