Table 4.
Waterbody proximity and use in relation to ALS status.
| Exposure | Controls | Cases | OR(95%CI) ab | |
|---|---|---|---|---|
| N (%) | N (%) | |||
| Reside full-time within 2mi of waterbody | No | 65 (33) | 64 (23) | Reference |
| Yes | 132 (67) | 214 (77) | 1.59(1.05,2.42) | |
| - If yes, ever algae blooms in this waterbody | No | 90(73) | 143(74) | Reference |
| Yes | 33(27) | 50(26) | 1.06(0.62,1.84) | |
| Water-Ski | No | 178 (95) | 207 (81) | Reference |
| ≥2x per month, for 1 year or more | Yes | 10 (5) | 47 (19) | 3.89(1.97,8.44) |
| Boat, sail, or kayak | No | 126 (68) | 153 (58) | Reference |
| ≥2x per month, for 1 year or more | Yes | 59 (32) | 111 (42) | 1.51(1.01,2.28) |
| Wind-surfing | No | 177 (94) | 240 (96) | Reference |
| ≥2x per month, for 1 year or more | Yes | 12 (6) | 11 (4) | 0.6(0.25,1.42) |
| Swim | No | 106(55) | 122(46) | Reference |
| ≥2x per month, for 1 year or more | Yes | 87(45) | 143(54) | 1.43(0.97,2.1) |
*
Odds ratios (OR) adjusted for agea and genderb. Missing reside n=44, blooms n=30, water ski n=77, boat n=70, windsurf n=79, swim n=61.