Characteristics of the cohort of hourly manufacturing workers from 1997 through 2007
| Characteristics | Frequency/count | Percent/mean (SD) median |
|---|---|---|
| Total employees | 37 900 | |
| Total jobs | 83 435 | |
| Total locations | 195 | |
| Total injuries | 17 785 | |
| Employee-level | ||
| Sex | ||
| Male | 30 245 | 79.80 |
| Female | 7655 | 20.20 |
| Ethnicity/race | ||
| American–Indian | 269 | 0.71 |
| Asian/Pacific Islander | 631 | 1.66 |
| Black/African–American | 5658 | 14.93 |
| Hispanic/Latino | 3098 | 8.17 |
| Caucasian | 28 102 | 74.15 |
| Other/multiple | 142 | 0.38 |
| Job level | ||
| Age at start of job | 41.21 (10.69) 41.38 | |
| Tenure at start of job | 10.73 (10.68) 6.47 | |
| Length of job | 1.88 (1.92) 1.22 | |
| Location level | ||
| Original plant | 46 | 23.59 |
| Union plant | 10 | 5.13 |
| Smelter plant | 9 | 4.62 |
| Injury level | ||
| Severity | ||
| First aid (non-reportable) | 13 078 | 73.53 |
| Medical treatment | 2425 | 13.64 |
| Restricted work | 2021 | 11.36 |
| Lost work day | 261 | 1.47 |
| Injury type | ||
| Abrasion/scratch | 1497 | 8.42 |
| Burn (chemical/thermal) | 2371 | 13.33 |
| Contusion/bruise | 3999 | 22.49 |
| Foreign body | 1250 | 7.03 |
| Laceration/cut | 3076 | 17.30 |
| Instantaneous sprain/strain | 3515 | 19.76 |
| Other | 2077 | 11.68 |