From: Occupational risk factors for Parkinson's disease: a case-control study in Japan
Variable | n (%) or Mean (SD) | |
---|---|---|
 | Cases, n = 249 | Controls, n = 369 |
Gender (male) | 93 (37.4) | 141 (38.2) |
Age (years) | 68.5 (8.6) | 66.6 (8.5) |
Region of residence | Â | Â |
   Kinki | 160 (64.3) | 215 (58.3) |
   Fukuoka | 89 (35.7) | 154 (41.7) |
Educational level (years) | Â | Â |
   < 10 | 51 (20.5) | 78 (21.1) |
   10-12 | 122 (49.0) | 171 (46.3) |
   ≥ 13 | 76 (30.5) | 120 (32.5) |
Pack-years of smoking | Â | Â |
   None | 185 (74.3) | 222 (60.2) |
   0.1-29.9 | 37 (14.9) | 65 (17.6) |
   30.0 ≤ | 27 (10.8) | 82 (22.2) |