TABLE 1.
Demographic Characteristics of the PEG Case-Control Study Population (n = 1473)
| Characteristic | Patients (n = 619) | Controls (n = 854) | P-Value* |
|---|---|---|---|
| Agea (mean ± SEM) | 68.3 ± 0.42 | 66.1 ± 0.40 | .0001 |
| Male (%) | 62.5 | 48.8 | <.0001 |
| European ancestry (%) | 75.8 | 68.1 | .001 |
| Ever smokers (%) | 47.7 | 52.7 | .06 |
| Positive PD historyb (%) | 15.8 | 7.5 | <.0001 |
| Education in years (mean ± SEM) | 13.6 ± 0.18 | 13.6 ± 0.14 | .67 |
| Years with Disease prior to enrollment (mean ± SEM) | 2.62 ± 0.08 | – | – |
| UPDRS Score (mean ± SEM) | 21.9 ± 0.46 | – | – |
| Number of pesticides highly exposed (mean ± SEM) | 51.0 ± 2.25 | 38.4 ± 1.64 | <.0001 |
a
Age at PD diagnosis for patients and interview for controls.
b
First degree relative with PD.
*
P-value based on chi-square or t test, PD patients versus controls.