TABLE 1.
Characteristics of Parkinson’s disease cases and unaffected subjects from five French districts in 2007
| Characteristics | Affected subjects (N = 1,659)
|
Unaffected subjects (N = 237,917)
|
Multivariable logistic model
|
|||
|---|---|---|---|---|---|---|
| N | % | N | % | ORa | 95% CIa | |
| Sex | ||||||
| Women | 824 | 49.7 | 115,466 | 48.5 | Reference | |
| Men | 835 | 50.3 | 122,451 | 51.5 | 1.52 | 1.38–1.68 |
| Age (yr) | ||||||
| 18–49 | 4 | 0.2 | 106,828 | 44.9 | 14.29b | 9.99–20.44 |
| 50–59 | 26 | 1.6 | 34,445 | 14.5 | 0.93c | 0.92–0.94 |
| 60–69 | 119 | 7.2 | 27,167 | 11.4 | ||
| 70–79 | 623 | 37.5 | 38,414 | 16.2 | ||
| 80–89 | 741 | 44.7 | 26,514 | 11.1 | ||
| ≥ 90 | 146 | 8.8 | 4,549 | 1.9 | ||
| District | ||||||
| Gironde | 441 | 26.6 | 89,011 | 37.4 | Reference | |
| Charente-Maritime | 415 | 25.0 | 57,288 | 24.1 | 1.11 | 0.96–1.27 |
| Côte-d’Or | 175 | 10.5 | 27,385 | 11.5 | 1.00 | 0.84–1.19 |
| Haute-Vienne | 265 | 16.0 | 25,772 | 10.8 | 1.18 | 1.01–1.39 |
| Mayenne | 363 | 21.9 | 38,461 | 16.2 | 1.20 | 1.05–1.39 |
| Median household income of the canton of residenced | ||||||
| High | 1,212 | 73.1 | 191,418 | 80.5 | Reference | |
| Low | 447 | 26.9 | 46,499 | 19.5 | 1.16 | 1.04–1.31 |
| Identification of cases | ||||||
| Free healthcare for PD only | 235 | 14.2 | – | – | ||
| Levodopa users only | 704 | 42.4 | – | – | ||
| Free healthcare for PD and levodopa users | 720 | 43.4 | – | – | ||
a
OR (95% CI) from a multivariable model including sex, age (linear and quadratic terms), district and median household income.
b
OR for an increase of 5 yr in age (linear term).
c
OR for an increase of 5 yr in age squared (quadratic term).
d
High median household income was defined by grouping the four highest quintiles; low median household income was defined by the lowest quintile.
PD, Parkinson’s disease; OR, odds ratio; CI, confidence interval.