Table 2.
Age-adjusted odds ratios and 95%confidence intervals of PD according to selected baseline characteristics
| PD cases |
Participants free of PD |
OR (95%CI) | OR (95%CI) in sensitivity analysis* |
|
|---|---|---|---|---|
| Baseline age, | ||||
| <55 | 26 | 45248 | 1.0 (reference) | |
| 55–59 | 13 | 7257 | 3.1 (1.6–6.1) | |
| 60–64 | 27 | 9142 | 5.1 (3.0–8.8) | |
| ≥65 | 29 | 9655 | 5.2 (3.1–8.9) | |
| Education level, | ||||
| Primary or under | 35 | 14938 | 1.0 (reference) | |
| Middle school | 23 | 26683 | 1.3 (0.7, 2.4) | 1.2 (0.6, 2.5) |
| High school or above | 37 | 29669 | 1.6 (1.0, 2.7) | 1.2 (0.7, 2.4) |
| Smoking | ||||
| Never | 94 | 69359 | 1.0 (reference) | |
| Ever | 1 | 1943 | 0.2 (0.03, 1.6) | 0.5 (0.06,3.3) |
| Husband smoking | ||||
| Never | 41 | 24350 | 1.0 (reference) | |
| Ever | 42 | 39459 | 0.8 (0.5, 1.3) | 0.9 (0.5, 1.5) |
| Current | 26 | 33743 | 0.7 (0.4, 1.1) | 0.7 (0.4, 1.3) |
| Tea drinking | ||||
| Never | 76 | 49958 | 1.0 (reference) | |
| Ever | 19 | 21344 | 0.8 (0.5–1.3) | 0.8 (0.4, 1.4) |
| Oral contraceptive use | ||||
| Never | 74 | 56636 | 1.0 (reference) | |
| Ever | 21 | 14666 | 1.1 (0.7–1.8) | 1.1 (0.6, 1.9) |
*
Analyses limited to 66 PD cases and 61,640 individuals without PD who were younger than 65 years of age at study baseline.