Total sample | Not exposed, reference | Non-danger exposed | Danger exposed | |
---|---|---|---|---|
(N = 840) | (n = 122) | (n = 434) | (n = 284) | |
None | 76 (9.0) | 8 (6.6) | 35 (8.1) | 33 (11.6) |
1 unit | 211 (25.1) | 41 (33.6) | 107 (24.7) | 63 (22.2) |
2–5 units | 320 (38.1) | 46 (37.7) | 168 (38.7) | 106 (37.3) |
6–10 units | 171 (20.4) | 18 (14.8) | 86 (19.8) | 67 (23.6) |
11–20 units | 43 (5.1) | 7 (5.7) | 25 (5.8) | 11 (3.9) |
> 20 units | 19 (2.3) | 2 (1.6) | 13 (3.0) | 4 (1.4) |
χ2 = 14.84, p = 0.134 |