Table 2.
Analysis of the association between physical work-requirement factors and work-related injuries (N = 7212)
| aOutcome: Number of injury events | bOutcome: Injured or not | |||
|---|---|---|---|---|
| Univariate IRRs | Multivariable IRRs | Univariate HRs | Multivariable HRs | |
| WORK-REQUIREMENT FACTORS: Does your work require | ||||
| Excessive physical effort? | ||||
| All/almost all the time | 3.96 (3.15, 4.97) |
2.19 (1.57, 3.05) |
3.42 (2.80, 4.18) |
2.32 (1.77, 3.03) |
| Most of the time | 2.91 (2.25, 3.74) |
1.71 (1.19, 2.46) |
2.48 (1.99, 3.08) |
1.84 (1.37, 2.47) |
| Some of the time | 1.83 (1.47, 2.28) |
1.46 (1.11, 1.91) |
1.77 (1.45, 2.15) |
1.59 (1.24, 2.02) |
| None/almost none of the time | 1 | 1 | 1 | 1 |
| Lifting heavy loads? | ||||
| All/almost all the time | 3.88 (3.15, 4.45) |
2.27 (1.60, 3.24) |
3.35 (2.75, 4.09) |
2.52 (1.88, 3.39) |
| Most of the time | 2.12 (1.62, 2.77) |
1.69 (1.14, 2.49) |
2.24 (1.74, 2.89) |
1.81 (1.27, 2.58) |
| Some of the time | 2.26 (1.88, 2.70) |
1.74 (1.37, 2.21) |
2.12 (1.81, 2.47) |
1.89 (1.54, 2.31) |
| None/almost none of the time | 1 | 1 | 1 | 1 |
| Stooping/kneeling/crouching? | ||||
| All/almost all the time | 3.88 (3.16, 4.78) |
2.20 (1.61, 3.01) |
3.30 (2.72, 3.99) |
2.41 (1.83, 3.15) |
| Most of the time | 2.77 (2.10, 3.65) |
1.87 (1.33, 2.61) |
2.51 (2.01, 3.12) |
2.01 (1.58, 2.79) |
| Some of the time | 1.80 (1.49, 2.19) |
1.46 (1.13, 1.89) |
1.90 (1.59, 2.28) |
1.67 (1.33, 2.09) |
| None/almost none of the time | 1 | 1 | 1 | 1 |
aGEE models with negative binomial distribution: adjusted for age; gender; race; ethnicity; chronic physical and mental health conditions; acute depression; alcohol consumption; work category; work tenure; and previous history of work-related injuries (hours worked was the offset or exposure time)
bCox models: age was used as the time to follow-up variable; other variables adjusted for were same as the GEE models