Table 1.
Distribution of employees with acute, traumatic occupational injuries in a cohort of aluminium manufacturing workers (N=30 163)
| Characteristic | Subjects in category | Number of injuries (per cent) | |||
|---|---|---|---|---|---|
| Not injured | One injury | Two injuries | More than three injuries | ||
| Sex* | |||||
| Male | 23 301 | 21 286 (91.4) | 1674 (7.2) | 274 (1.2) | 67 (0.3) |
| Female | 6862 | 6146 (89.6) | 578 (8.4) | 109 (1.6) | 29 (0.4) |
| Race* | |||||
| White | 20 911 | 19 040 (91.1) | 1553 (7.4) | 260 (1.2) | 58 (0.3) |
| Black | 4420 | 4021 (91.0) | 320 (7.2) | 59 (1.3) | 20 (0.5) |
| Hispanic | 3625 | 3257 (89.9) | 299 (8.3) | 54 (1.5) | 15 (0.4) |
| Asian | 1002 | 937 (93.5) | 61 (6.1) | 3 (0.3) | 1 (0.1) |
| Other | 205 | 177 (86.3) | 19 (9.3) | 7 (3.4) | 2 (1.0) |
| Age* | |||||
| Under 25 | 1368 | 1226 (89.6) | 113 (8.3) | 25 (1.8) | 4 (0.3) |
| 25 to 34 | 4862 | 4354 (89.6) | 409 (8.4) | 75 (1.5) | 24 (0.5) |
| 35 to 44 | 7884 | 7165 (90.9) | 598 (7.6) | 92 (1.2) | 29 (0.4) |
| 45 to 54 | 10 261 | 9400 (91.6) | 706 (6.9) | 124 (1.2) | 31 (0.3) |
| Over 55 | 5788 | 5287 (91.3) | 426 (7.4) | 67 (1.2) | 8 (0.1) |
| Time since hire (years)* | |||||
| <1 | 5525 | 4893 (88.6) | 488 (8.8) | 117 (2.1) | 27 (0.5) |
| 1–2 | 2020 | 1805 (89.4) | 182 (9.0) | 24 (1.2) | 9 (0.5) |
| 3–5 | 2901 | 2645 (91.2) | 211 (7.3) | 34 (1.2) | 11 (0.4) |
| 6–10 | 6076 | 5493 (90.4) | 483 (8.0) | 79 (1.3) | 21 (0.4) |
| 11–20 | 6177 | 5703 (92.3) | 393 (6.4) | 66 (1.1) | 15 (0.2) |
| >20 | 7464 | 6893 (92.4) | 495 (6.6) | 63 (0.8) | 13 (0.2) |
| Job grade* | |||||
| 1–3 | 5608 | 5229 (93.2) | 332 (5.9) | 36 (0.6) | 11 (0.2) |
| 4–7 | 6071 | 5556 (91.5) | 420 (6.9) | 74 (1.2) | 21 (0.4) |
| 8–12 | 6649 | 6078 (91.4) | 486 (7.3) | 68 (1.0) | 17 (0.3) |
| 13–21 | 5686 | 5051 (88.3) | 480 (8.4) | 120 (2.1) | 35 (0.6) |
| 22–71 | 6149 | 5518 (89.7) | 534 (8.7) | 85 (1.4) | 12 (0.2) |
| Unionised* | |||||
| Yes | 14 409 | 13 299 (92.3) | 872 (6.1) | 186 (1.3) | 52 (0.4) |
| No | 12 100 | 11 780 (97.4) | 301 (2.5) | 16 (0.1) | 3 (0.02) |
| Plant type* | |||||
| Rigid packaging | 2580 | 2244 (87.0) | 278 (10.8) | 51 (2.0) | 7 (0.3) |
| Casting | 6476 | 6360 (98.2) | 112 (1.7) | 3 (0.05) | 1 (0.02) |
| Closure systems | 456 | 452 (99.3) | 2 (0.44) | 2 (0.22) | – |
| Engineered products | 3730 | 3474 (93.1) | 203 (5.4) | 42 (1.1) | 11 (0.3) |
| Fasteners | 2298 | 2271 (98.8) | 25 (1.1) | 2 (0.1) | – |
| Consumer products | 2700 | 2565 (95.0) | 124 (4.6) | 8 (0.3) | 3 (0.1) |
| Rolled products | 2361 | 2314 (98.0) | 37 (1.6) | 7 (0.3) | 3 (0.1) |
| Smelter | 2785 | 2346 (84.2) | 325 (11.7) | 84 (3.0) | 30 (1.1) |
| Satisfaction scale† | |||||
| Low | 15 309 | 14 194 (92.7) | 893 (5.8) | 172 (1.1) | 50 (0.3) |
| Medium | 8057 | 7803 (96.9) | 225 (2.8) | 25 (0.3) | 4 (0.05) |
| High | 3143 | 3082 (98.1) | 55 (1.8) | 5 (0.2) | 1 (0.03) |
| Work environment scale | |||||
| Poor environment | 17 381 | 16 352 (94.1) | 838 (4.8) | 149 (0.9) | 42 (0.2) |
| Average environment | 7993 | 7607 (95.2) | 321 (4.0) | 52 (0.7) | 13 (0.2) |
| Good environment | 1135 | 1120 (98.7) | 14 (1.2) | 1 (0.1) | – |
| Supervisor scale† | |||||
| Poor perception | 19 204 | 17 969 (93.6) | 1007 (5.2) | 177 (0.9) | 51 (0.3) |
| Average perception | 5950 | 5783 (97.2) | 140 (2.3) | 23 (0.4) | 4 (0.1) |
| Good perception | 1355 | 1327 (97.9) | 26 (1.9) | 2 (0.1) | – |
| Stress scale* | |||||
| High stress | 8395 | 7611 (90.7) | 615 (7.3) | 133 (1.6) | 36 (0.4) |
| Medium stress | 10 790 | 10 315 (95.6) | 398 (3.7) | 61 (0.6) | 16 (0.2) |
| Low stress | 7323 | 7153 (97.7) | 160 (2.2) | 8 (0.1) | 2 (0.04) |
* p<0.05.
†All employees in plant assigned average values, for descriptive purposes.