Demographic characteristics of the Guangxi manganese-exposed workers healthy cohort (GXMEWHC)
| Variables | Number (n=1888) | Per cent |
|---|---|---|
| Sex | ||
| Male | 1197 | 63.4 |
| Female | 691 | 36.6 |
| Age, years (mean±SD) | 40.31±7.85 | |
| <35 | 482 | 25.5 |
| 35–40 | 402 | 21.3 |
| 40–45 | 440 | 23.3 |
| ≥45 | 564 | 29.9 |
| Seniority, years (mean±SD) | 15.34±9.63 | |
| <10 | 652 | 34.5 |
| 10–20 | 585 | 31 |
| >20 | 651 | 34.5 |
| BMI, kg/m2 (mean±SD) | 22.47±2.8 | |
| <18.5 | 95 | 5 |
| 18.5–24 | 1289 | 68.3 |
| 24–28 | 422 | 22.4 |
| ≥28 | 74 | 3.9 |
| Missing | 8 | 0.4 |
| Race/ethnicity | ||
| Han Chinese | 916 | 48.5 |
| Zhuang minority | 885 | 46.9 |
| Other ethnic groups | 80 | 4.2 |
| Marital status | ||
| Single | 233 | 12.3 |
| Married | 1580 | 83.7 |
| Widowed or divorced | 75 | 4 |
| Education | ||
| Middle school or lower | 829 | 43.9 |
| High school | 850 | 45 |
| University or college or higher | 209 | 11.1 |
| Smoking status | ||
| Current smoker | 729 | 38.6 |
| Former smoker | 132 | 7 |
| Never smoker | 1027 | 54.4 |
| Drinking status | ||
| Current drinker | 907 | 48.1 |
| Former drinker | 301 | 15.9 |
| Never drinker | 680 | 36 |
BMI, body mass index.