Table 2 Occupational exposure characteristics for study participants, Honolulu Heart Program, 1965–68.
| Pesticide | Solvent | Metal | Manganese | Mercury | |
|---|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | n (%) | |
| Usual job exposure | |||||
| None (0) | 3267 (92.9) | 1699 (48.3) | 2076 (59.0) | 2789 (82.3) | 3001 (85.4) |
| Low (1) | 37 (1.1) | 1096 (31.2) | 1027 (29.2) | 396 (11.7) | 444 (12.6) |
| Medium (2) | 11 (0.3) | 231 (6.6) | 212 (6.0) | 32 (0.9) | 71 (2.0) |
| High (3) | 201 (5.7) | 490 (13.9) | 201 (5.7) | 170 (5.0) | 0 (0) |
| Total | 3516 | 3516 | 3516 | 3387 | 3516 |
| Years of exposure | |||||
| 0 | 3194 (90.7) | 1480 (42.1) | 1913 (54.4) | 2827 (80.3) | 2952 (83.8) |
| 1–15 | 95 (2.7) | 378 (10.7) | 275 (7.8) | 127 (3.6) | 84 (2.4) |
| 16–30 | 159 (4.5) | 912 (25.9) | 689 (19.6) | 351 (10.0) | 274 (7.8) |
| ⩾31 | 73 (2.1) | 749 (21.3) | 642 (18.2) | 215 (6.1) | 211 (6.0) |
| Total | 3521 | 3519 | 3519 | 3520 | 3521 |
| Intensity score* | |||||
| Zero | 3266 (92.9) | 1699 (48.3) | 2076 (59.1) | 2788 (82.3) | 2891 (85.4) |
| Low | 64 (1.8) | 1145 (32.6) | 1039 (29.6) | 392 (11.6) | 157 (4.6) |
| Medium | 119 (3.4) | 484 (13.8) | 318 (9.1) | 147 (4.3) | 195 (5.8) |
| High | 66 (1.9) | 187 (5.3) | 82 (2.3) | 59 (1.7) | 143 (4.2) |
| Total | 3515 | 3515 | 3515 | 3386 | 3386 |
*Categories for mercury intensity scores are 0, 1–20, 21–30, ⩾31; categories for the four other intensity scores are 0, 1–39, 40–79, ⩾80. Intensity score = usual job exposure × years of exposure.