Prevalence and all back pain and work related back pain due to repeated activities (RA back pain) by gender, age, and work activities, the USA, 1988
| Workers (n=1000)* | Prevalence of back pain | |||||
|---|---|---|---|---|---|---|
| All back pain | RA back pain | |||||
| Attributes | Males | Females | Males % (SE) | Females % (SE) | Males % (SE) | Females % (SE) |
| *Number in thousands. | ||||||
| †Including those who were not sure how much time they spent. | ||||||
| Age | ||||||
| 18–24 years | 11098 | 10548 | 13.6 (0.9) | 14.0 (0.8) | 7.6 (0.8) | 4.3 (0.5) |
| 25–34 years | 19767 | 16420 | 18.1 (0.6) | 17.1 (0.7) | 9.6 (0.5) | 6.4 (0.4) |
| 35–44 years | 16235 | 13935 | 22.0 (0.8) | 18.7 (0.7) | 10.7 (0.6) | 6.2 (0.5) |
| 45–54 years | 10643 | 8683 | 19.8 (0.9) | 19.5 (1.0) | 8.4 (0.6) | 6.8 (0.6) |
| 55–64 years | 7305 | 5737 | 17.8 (1.2) | 18.2 (1.1) | 7.3 (0.8) | 6.2 (0.7) |
| >64 years | 2358 | 1886 | 17.9 (1.7) | 13.9 (1.6) | 3.4 (0.7) | 2.1 (0.7) |
| p (among age groups) | <0.01 | <0.01 | <0.01 | <0.01 | ||
| Hours spent on repeated strenuous activities at work on a typical workday | ||||||
| No | 40437 | 43852 | 14.8 (0.4) | 15.2 (0.4) | 4.1 (0.3) | 3.3 (0.2) |
| Yes† | 26935 | 13421 | 24.2 (0.7) | 24.1 (0.9) | 16.4 (0.6) | 14.7 (0.7) |
| P (yes v no) | <0.01 | <0.01 | <0.01 | <0.01 | ||
| <2 hours | 8369 | 5836 | 21.6 (1.1) | 21.3 (1.4) | 12.4 (0.9) | 11.7 (1.1) |
| 2–4 hours | 4787 | 2515 | 24.8 (1.6) | 24.0 (2.0) | 17.1 (1.3) | 16.7 (1.9) |
| 4–6 hours | 3676 | 1474 | 25.3 (1.7) | 27.8 (3.0) | 17.8 (1.6) | 18.0 (2.4) |
| 6–8 hours | 6270 | 2358 | 25.8 (1.4) | 25.9 (2.2) | 19.0 (1.2) | 17.5 (1.8) |
| >8 hours | 1993 | 441 | 30.0 (2.6) | 39.4 (5.5) | 24.4 (2.6) | 24.9 (4.5) |
| p (among groups) | <0.001 | <0.001 | <0.001 | <0.001 | ||
| Hours spent on repeated bending, twisting, and reaching at work on a typical workday | ||||||
| No | 32731 | 34174 | 13.7 (0.5) | 13.9 (0.4) | 3.0 (0.3) | 2.1 (0.2) |
| Yes† | 34781 | 23114 | 23.0 (0.6) | 22.3 (0.6) | 14.6 (0.5) | 11.8 (0.5) |
| P (yes v no) | <0.01 | <0.01 | <0.01 | <0.01 | ||
| <2 hours | 6411 | 6035 | 20.9 (1.4) | 19.3 (1.1) | 9.8 (0.9) | 7.8 (0.8) |
| 2–4 hours | 6207 | 4729 | 23.4 (1.3) | 20.4 (1.3) | 14.0 (1.1) | 10.4 (1.0) |
| 4–6 hours | 5431 | 3794 | 20.3 (1.2) | 23.4 (1.5) | 13.8 (1.0) | 13.7 (1.3) |
| 6–8 hours | 11519 | 6341 | 24.3 (0.9) | 25.9 (1.2) | 17.1 (0.9) | 15.3 (1.0) |
| >8 hours | 2867 | 858 | 29.8 (2.1) | 27.5 (3.1) | 20.9 (1.9) | 17.1 (2.7) |
| p (among groups) | <0.01 | <0.01 | <0.01 | <0.01 | ||