Table 3
Relative risks of hand injury (95% CI) for transient factors stratified by selected worker and workplace characteristics, northeastern USA, 1997–2000
| Fixed characteristics | Work equipment | Work practices | Worker related factors | ||||
|---|---|---|---|---|---|---|---|
| Unusual performing equip/materials | Glove use | Unusual work method | Unusual task | Distracted | Rushed | Feeling ill | |
| p for χ2 test of homogeneity, *p<0.05, **p<0.01. | |||||||
| All subjects | 11.0 (9.4 to 12.8) | 0.4 (0.3 to 0.5) | 10.5 (8.7 to 12.7) | 6.7 (5.7 to 8.0) | 5.3 (4.6 to 6.1) | 2.4 (2.1 to 2.7) | 1.9 (1.3 to 2.8) |
| Occupational category | |||||||
| Machine/assembly | 10.6 (18.5 to 13.3)** | 0.5 (0.4 to 0.6) | 11.8 (9.0 to 15.5) | 5.2 (4.0 to 6.8)** | 4.1 (3.3 to 5.1)** | 2.5 (2.0 to 3.0)** | 1.6 (0.9 to 2.9) |
| Construction trades | 17.4 (9.3 to 32.3) | 0.3 (0.2 to 0.4) | 10.4 (5.3 to 20.4) | 4.5 (2.4 to 8.2) | 3.1 (2.2 to 4.4) | 4.5 (3.1 to 6.5) | 2.3 (0.8 to 6.7) |
| Packaging, mmh | 5.1 (3.8 to 6.9) | 0.4 (0.3 to 0.7) | 9.5 (6.1 to 14.8) | 7.2 (4.6 to 11.2) | 7.5 (5.4 to 10.4) | 1.9 (1.5 to 2.5) | 1.8 (0.7 to 4.8) |
| Service, prof. manag. | 15.7 (11.1 to 22.3) | 0.4 (0.3 to 0.6) | 9.3 (6.6 to 13.2) | 10.8 (8.1 to 14.4) | 8.9 (6.7 to 11.7) | 2.0 (1.6 to 2.5) | 2.4 (1.2 to 5.1) |
| Job experience | |||||||
| ⩽1 y | 13.2 (9.1 to 19.2)** | 0.4 (0.3 to 0.6)* | 14.5 (9.7 to 21.6)** | 6.7 (4.8 to 9.2) | 7.3 (5.9 to 9.2)** | 2.7 (2.2 to 3.4) | 2.2 (1.2 to 4.1) |
| 1–3 y | 16.3 (11.4 to 23.3) | 0.2 (0.2 to 0.4) | 25.4 (15.8 to 40.6) | 5.7 (3.9 to 8.3) | 8.7 (6.6 to 11.4) | 2.4 (1.8 to 3.1) | 3.2 (1.7 to 6.4) |
| >3 y | 9.0 (7.4 to 11.0) | 0.5 (0.4 to 0.6) | 7.5 (5.9 to 9.6) | 7.3 (5.7 to 9.2) | 3.4 (2.8 to 4.2) | 2.1 (1.8 to 2.6) | 1.2 (0.6 to 2.4) |
| Safety training | |||||||
| Yes | 11.1 (8.4 to 14.7)* | 0.6 (0.5 to 0.8)** | 10.6 (7.8 to 14.6) | 2.7 (1.9 to 4.0)** | 4.6 (3.6 to 5.7)* | 2.5 (2.0 to 3.2) | 2.6 (1.3 to 5.2) |
| No | 7.5 (5.9 to 9.7) | 0.3 (0.2 to 0.4) | 11.2 (8.1 to 15.5) | 8.7 (6.8 to 11.0) | 6.8 (5.6 to 8.2) | 2.3 (2.0 to 2.7) | 2.0 (1.2 to 3.2) |
