Table 4.
Demographic characteristics of participants
| Demographic characteristics | Survey count | Percent |
|---|---|---|
| Gender (74 missing) | ||
| Male | 2681 | 93.4 |
| Female | 190 | 6.6 |
| Job classification (98 missing) | ||
| Salaried | 584 | 20.5 |
| Hourly | 2263 | 79.5 |
| Age range (81 missing) | ||
| 18–24 | 143 | 5.0 |
| 25–34 | 585 | 20.4 |
| 35–44 | 678 | 23.7 |
| 45–54 | 798 | 27.9 |
| 55–64 | 597 | 20.8 |
| 65+ | 63 | 2.2 |
| Highest level of education (82 missing) | ||
| Less than high school | 78 | 2.7 |
| High school | 1686 | 58.9 |
| Associate degree/trade certificate | 772 | 27.0 |
| Bachelor’s degree | 254 | 8.9 |
| Master’s degree or higher | 73 | 2.5 |
| Job schedule (92 missing) | ||
| Set shift | 2015 | 70.6 |
| Rotating shift | 838 | 29.4 |
*
Researchers did not aim to demonstrate equivalence in demographic distributions among the subsectors. Rather, this study sought to address differences among mined sectors