Table 1.
Knee work-related musculoskeletal disorder workers’ compensation claims, 1999–2007
| All Claims | Total work-related musculoskeletal disorder
|
Knee work-related musculoskeletal disorder |
|||||
|---|---|---|---|---|---|---|---|
| TOTAL | Compensable | Medical Aid Only | Total | Compensable | Medical Aid Only | Total | |
| Total claims, 1999–2007 | 1,168,618 | 124,211 | 219,478 | 343,689 | 11,976 | 12,514 | 24,490 |
| Percent of all claims | 100.0% | 10.6% | 18.8% | 29.4% | 1.0% | 1.1% | 2.1% |
| Percent of accepted claims | 36.1% | 63.9% | 100.0% | 48.9% | 51.1% | 100.0% | |
| Total direct cost (millions of dollars), 1999–2007 | $10,990.7 | $4,833.2 | $286.0 | $5,119.2 | $477.8 | $16.6 | $494.4 |
| Mean total number of claims per year | 129,846 | 13,801 | 24,386 | 38,188 | 1,331 | 1,390 | 2,721 |
| Percent female | 33.0% | 35.6% | 37.2% | 36.9% | 24.5% | 28.1% | 26.5% |
| Median age | 36 | 40 | 36 | 38 | 42 | 39 | 41 |
| Median body mass index (kg/m2) | 26.9 | 27.4 | 27.1 | 27.3 | 28.7 | 28.2 | 28.4 |
| Median months on the job | 12 | 18 | 18 | 18 | 18 | 21 | 19 |
| Mean yearly claim rate per 10,000 full-time equivalents | 861.9 | 91.9 | 162.6 | 254.4 | 8.9 | 9.3 | 18.2 |
| Mean time loss (days) | 198.2 | 232.5 | 212.7 | ||||
| Median time loss (days) | 36 | 47 | 54 | ||||
| Mean total direct cost per claim (dollars) | $9,508 | $38,950 | $1,361 | $15,313 | $39,901 | $1,333 | $20,222 |
| Median total direct cost per claim (dollars) | $539 | $8,778 | $522 | $1,145 | $12,744 | $487 | $1,900 |