Table 1:
Characteristics of the study population.
| N (%) | Median (Interquartile range) | |
|---|---|---|
|
| ||
| Number of workers in analysis | 14,218 | |
| Sex | ||
| Male | 8,948 (62.9%) | |
| Female | 5,270 (37.1%) | |
| Vital status (as of 12/31/2015) | ||
| Alive | 12,825 (90.2%) | |
| Deceased | 1,393 (9.8%) | |
| Age at injury | 37.7 (29.1–45.8) | |
| Lost work timea | 8,365 (58.8%) | |
| Number of lost work daysa (among those with lost work time) | 112 (14–328) | |
| Permanent disabilitya | ||
| Partial | 3,944 (27.7%) | |
| Total | 69 (0.5%) | |
| Percent permanent disabilitya (among those with permanent disability) | 10 (6–16) | |
| Surgical treatment | 146 (1.0%) | |
| Single claim | 11,571 (81.4%) | |
| First claim for low back sprain/strain onlyb | 8,175 (57.5%) | |
| Over 95% of county whitec | 7,766 (54.6%) | |
a
Lost work time missing for 1,310 cohort members, number of lost work days missing for 107 cohort members with lost work time, permanent disability status missing for 1,395 cohort members, percent permanent disability missing for 50 cohort members with permanent disability, and over 95% of county white in 2000 census missing for 1,335 cohort members.
b
First claim for low back sprain or strain was for low back sprain and/or strain only
c
Over 95% of the claimant county was white only according to the 2000 census