Table 1.
Characteristics of the full sample included in telomere analyses and the current worker subsample, the Multi-Ethnic Study of Atherosclerosis.
| Characteristic | Full sample (n=981) | Current worker sub-sample for job strain analyses (n=435) |
|---|---|---|
| Mean age (SD) in years | 61.4 (9.93) | 55.4 (7.63) |
| Percent male | 47.6 | 50.6 |
| Race/ethnicity (% distribution) | ||
| White | 18.6 | 20.9 |
| African American | 28.3 | 34.9 |
| Hispanic | 53.1 | 44.1 |
| Percent foreign-born | 49.3 | 47.6 |
| Income (% distribution) | ||
| <$20,000 | 29.6 | 15.9 |
| $20,000–$39,499 | 27.7 | 27.5 |
| $35,000–$49,999 | 16.5 | 18.9 |
| $50,000–$74,499 | 13.0 | 18.2 |
| ≥$75,000 | 13.1 | 19.4 |
| Education (% distribution) | ||
| Less than high school | 27.1 | 18.4 |
| Complete high school | 20.3 | 16.6 |
| Some college, vocational/associate degree | 29.9 | 34.7 |
| Bachelor's degree | 11.1 | 14.3 |
| Graduate or professional degree | 11.6 | 16.1 |
| Occupation (% distribution) | ||
| Management | 11.2 | 13.0 |
| Professional | 21.0 | 25.4 |
| Service | 23.6 | 25.6 |
| Sales, Office, Admin. Support | 20.2 | 20.2 |
| Blue-collar | 24.1 | 15.8 |
| Current employment (% distribution) | ||
| Working full-time | 36.7 | 79.7 |
| Working part-time | 6.9 | 15.0 |
| On-leave or unemployed | 5.6 | -- |
| Retired, not working or volunteering | 41.0 | -- |
| Retired, but working/volunteering | 9.8 | 5.4 |
| Current job tenure in years, mean (SD) | -- | 14.0 (11.4) |
| Mean O*NET physical activity (SD) | 46.6 (21.2) | 44.8 (21.2) |
| Mean O*NET physical hazard exposure (SD) | 26.8 (15.7) | 25.2 (14.9) |
| Mean O*NET interpersonal stressors (SD) | 55.1 (11.3) | 56.2 (11.3) |
| Mean O*NET job demands (SD) | -- | 52.2 (8.2) |
| Mean O*NET job control (SD) | -- | 51.9 (16.2) |
| Mean self-report job demands (SD)1 | -- | 28.1 (8.3) |
| Mean self-report job control (SD)2 | -- | 71.1 (15.8) |
| Job strain quadrant (% distribution) | ||
| Low strain jobs | -- | 24.1 |
| Active jobs | -- | 22.5 |
| Passive jobs | -- | 25.6 |
| High strain jobs | -- | 28.0 |
| Body Mass Index (% distribution) | ||
| <25 kg/m2 | 23.5 | 25.3 |
| 25–29.9 kg/m2 | 39.7 | 37.5 |
| 30–39.9 kg/m2 | 32.3 | 31.3 |
| >=40 kg/m2 | 4.6 | 6.0 |
| Smoking status (% distribution) | ||
| Never smoker | 52.4 | 51.7 |
| Former smoker | 36.1 | 34.5 |
| Current smoker | 11.5 | 13.8 |
| Mean pack-years among ever smokers (SD)3 | 17.4 (19.0) | 15.2 (16.0) |
| Percent restless sleep >1 day/week | 41.6 | 41.6 |
| Telomere length (T/S ratio) | ||
| 10th percentile | 0.634 | 0.663 |
| 25th percentile | 0.719 | 0.758 |
| 50th percentile | 0.832 | 0.872 |
| 75th percentile | 0.952 | 0.994 |
| 90th percentile | 1.092 | 1.123 |
| mean (SD) | 0.845 (0.176) | 0.885 (0.181) |
1
Range from 12 to 48.
2
Range from 24 to 96.
3
Mean pack years was calculated only for current and former smokers.