Table 1.
Characteristics of women at the time of the interview, and HT use: Parkinson disease cases and controls
| Cases (n=137) | Controls (n=227) | p-value | |
|---|---|---|---|
| Age (years), mean (SD) | 68.6 (9.0) | 68.7 (9.6) | 0.86 |
| Length of GHC enrollment (years), mean (SD) | 22.1 (10.9) | 24.0 (12.0) | 0.13 |
| Education (≥ high school), n (%) | 130 (95%) | 215 (95%) | 0.94 |
| Race (non-Hispanic Caucasian), n (%) | 128 (93%) | 210 (93%) | 0.74 |
| Smoking (>100 cigarettes in lifetime), n (%) | 45 (33%) | 108 (48%) | <0.01 |
| Caffeine (coffee), n (%)a | |||
| 0–1 cups per day | 81 (59%) | 127 (56%) | 0.64 |
| 2–5 cups per day | 48 (35%) | 89 (39%) | |
| >6 cups per day | 8 (6%) | 10 (4%) | |
| Breast cancer (self-reported), n (%) | 6 (4%) | 10 (4%) | 0.99 |
| Uterine (cervical) cancer (self-reported), n (%) | 2 (1%) | 1 (<1%) | 0.30 |
| Ovarian cancer (self-reported), n (%) | 0 (0%) | 0 (0%) | . |
| First-degree relative with PD, n (%)b | 16 (14%) | 7 (4%) | <0.01 |
a
data missing for n=1 control subject; test statistic includes all categories
b
data missing for 21% of the subjects