Prevalence of work related back pain due to repeated activities only (RA only back pain), work related back pain due to a single accident or injury only (AI only back pain), and work related back pain due to an accident or injury (AI back pain), by gender, age, and work activities, the USA, 1988
| Prevalence of back pain | ||||||
|---|---|---|---|---|---|---|
| RA only back pain | AI only back pain | AI back pain | ||||
| Attributes | Males % (SE) | Females % (SE) | Males % (SE) | Females % (SE) | Males % (SE) | Females % (SE) |
| *Including those who were not sure how much time they spent. | ||||||
| Age | ||||||
| 18–24 years | 4.0 (0.5) | 3.3 (0.4) | 0.6 (0.2) | 0.5 (0.2) | 4.2 (0.6) | 1.6 (0.3) |
| 25–34 years | 5.8 (0.4) | 4.0 (0.3) | 2.1 (0.3) | 0.8 (0.2) | 5.9 (0.4) | 3.2 (0.3) |
| 35–44 years | 6.3 (0.4) | 3.8 (0.4) | 2.1 (0.2) | 1.1 (0.2) | 6.5 (0.4) | 3.5 (0.4) |
| 45–54 years | 5.3 (0.5) | 4.2 (0.5) | 1.8 (0.3) | 1.2 (0.3) | 4.9 (0.5) | 3.8 (0.5) |
| 55–64 years | 4.3 (0.7) | 4.2 (0.6) | 2.4 (0.4) | 0.7 (0.2) | 5.3 (0.6) | 2.8 (0.5) |
| >64 years | 2.4 (0.6) | 1.8 (0.7) | 2.3 (0.8) | 1.0 (0.4) | 3.3 (0.9) | 1.3 (0.4) |
| p (among groups) | <0.01 | 0.04 | <0.01 | 0.15 | <0.01 | <0.01 |
| Hours spent on repeated strenuous activities at work on a typical workday | ||||||
| No | 2.2 (0.2) | 2.3 (0.2) | 1.6 (0.2) | 0.7 (0.1) | 3.5 (0.2) | 1.7 (0.2) |
| Yes* | 10.1 (0.4) | 9.1 (0.6) | 2.3 (0.2) | 1.7 (0.3) | 8.5 (0.5) | 7.3 (0.5) |
| p (yes v no) | <0.01 | <0.01 | 0.01 | <0.01 | <0.01 | <0.01 |
| <2 hours | 7.2 (0.6) | 7.5 (0.9) | 2.4 (0.4) | 1.4 (0.4) | 7.6 (0.7) | 5.6 (0.8) |
| 2–4 hours | 10.9 (1.1) | 9.4 (1.6) | 1.9 (0.5) | 1.5 (0.6) | 8.1 (1.0) | 8.8 (1.4) |
| 4–6 hours | 11.4 (1.3) | 10.6 (1.9) | 1.6 (0.5) | 1.5 (0.9) | 7.9 (1.1) | 8.9 (1.7) |
| 6–8 hours | 11.1 (1.0) | 11.6 (1.5) | 2.6 (0.5) | 2.4 (0.8) | 10.5 (1.0) | 8.3 (1.2) |
| >8 hours | 16.5 (2.1) | 12.3 (3.0) | 1.7 (0.6) | 3.2 (1.7) | 9.6 (1.6) | 15.8 (4.2) |
| p (among groups) | <0.01 | <0.01 | 0.13 | 0.02 | <0.01 | <0.01 |
| Hours spent on repeated bending, twisting, and reaching at work on a typical workday | ||||||
| No | 1.5 (0.2) | 1.4 (0.1) | 1.6 (0.2) | 0.7 (0.1) | 3.1 (0.2) | 1.3 (0.1) |
| Yes* | 9.0 (0.4) | 7.4 (0.4) | 2.1 (0.2) | 1.2 (0.2) | 7.7 (0.4) | 5.6 (0.4) |
| p (yes v no) | <0.01 | <0.01 | 0.05 | <0.01 | <0.01 | <0.01 |
| <2 hours | 6.1 (0.7) | 5.3 (0.6) | 2.4 (0.5) | 1.0 (0.3) | 6.1 (0.8) | 3.6 (0.6) |
| 2–4 hours | 9.1 (0.9) | 5.3 (0.8) | 2.1 (0.4) | 0.5 (0.2) | 7.0 (0.7) | 5.5 (0.8) |
| 4–6 hours | 9.2 (0.9) | 8.1 (0.9) | 1.4 (0.4) | 1.2 (0.4) | 6.1 (0.8) | 6.8 (1.0) |
| 6–8 hours | 9.7 (0.7) | 10.6 (0.9) | 1.9 (0.3) | 1.9 (0.4) | 9.4 (0.7) | 6.6 (0.7) |
| >8 hours | 13.1 (1.4) | 10.3 (1.9) | 2.2 (0.6) | 0.9 (0.6) | 10.0 (1.4) | 7.7 (2.0) |
| p (among groups) | <0.01 | <0.01 | 0.27 | 0.03 | <0.01 | <0.01 |