Descriptive statistics at baseline and distribution of individual-level covariates and job-level exposures by tertile of physical demand, psychological demand and job control for 9260 persons who worked in 11 722 person-jobs 2004–2005
| Full cohort at baseline | Physical demand | Psychological demand | Job control | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 9260 persons | 11 722 Person-jobs | 11 722 Person-jobs | 11 722 Person-jobs | |||||||
| Heavy | Medium | Light | High | Moderate | Low | High | Moderate | Low | ||
| N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | |
| Person-jobs | 11 722 (100) | 3953 (100) | 5549 (100) | 2220 (100) | 3801 (100) | 3916 (100) | 4005 (100) | 3460 (100) | 3667 (100) | 4595 (100) |
| Age (years), mean (SD) | 45.9 (10.3) | 43.6 (11.2) | 45.8 (10.0) | 45.5 (9.4) | 43.7 (10.7) | 46.4 (10.3) | 44.8 (9.9) | 48.6 (9.3) | 45.2 (10.4) | 42.0 (10.2) |
| Tenure (years), mean (SD) | 17.0 (12.3) | 14.7 (13.0) | 16.3 (12.0) | 16.5 (11.4) | 14.4 (11.8) | 18.0 (12.8) | 15.1 (11.8) | 19.7 (12.3) | 16.4 (12.5) | 12.5 (11.1) |
| Male sex | 8314 (90) | 3681 (93) | 4828 (87) | 1952 (88) | 3434 (90) | 3569 (91) | 3458 (86) | 3102 (90) | 3316 (90) | 4043 (88) |
| Race/ethnicity (white) | 7999 (86) | 3426 (87) | 4838 (87) | 1808 (81) | 3291 (87) | 3494 (89) | 3287 (82) | 3007 (87) | 3129 (85) | 3936 (86) |
| Job tenure <1 year | 2486 (27) | 1441 (36) | 1998 (36) | 901 (41) | 1468 (39) | 1366 (35) | 1506 (38) | 927 (27) | 1424 (39) | 1989 (43) |
| Physical demand | ||||||||||
| Heavy/very heavy | 3320 (36) | . | . | . | 920 (24) | 1993 (51) | 1040 (26) | 952 (27) | 1348 (37) | 1653 (36) |
| Medium | 4286 (46) | . | . | . | 2164 (57) | 1258 (32) | 2127 (53) | 1674 (48) | 1671 (45) | 2204 (48) |
| Sedentary/light | 1654 (18) | . | . | . | 717 (19) | 665 (17) | 838 (21) | 834 (24) | 648 (18) | 738 (16) |
| Psychological demand | ||||||||||
| High | 2989 (32) | 920 (23) | 2164 (39) | 717 (32) | . | . | . | 1492 (43) | 1111 (30) | 1198 (26) |
| Moderate | 3226 (35) | 1993 (51) | 1258 (23) | 665 (30) | . | . | . | 1352 (39) | 1219 (33) | 1345 (29) |
| Low | 3045 (33) | 1040 (26) | 2127 (38) | 838 (38) | . | . | . | 616 (18) | 1337 (36) | 2052 (45) |
| Job control | ||||||||||
| High | 2952 (32) | 952 (24) | 1674 (30) | 834 (38) | 1492 (39) | 1352 (35) | 616 (15) | . | . | . |
| Moderate | 2896 (31) | 1348 (34) | 1671 (30) | 648 (29) | 1111 (29) | 1219 (31) | 1337 (33) | . | . | . |
| Low | 3412 (37) | 1653 (42) | 2204 (40) | 738 (33) | 1198 (31) | 1345 (34) | 2052 (51) | . | . | . |
| Heat | ||||||||||
| Almost always | 1632 (18) | 1369 (35) | 552 (10) | 185 (8) | 1244 (33) | 560 (14) | 302 (7) | 307 (9) | 883 (24) | 916 (20) |
| Up to half the time | 4518 (49) | 1734 (44) | 3084 (56) | 890 (40) | 1706 (45) | 2168 (55) | 1835 (46) | 2277 (66) | 2108 (57) | 1323 (29) |
| Never | 3110 (33) | 850 (21) | 1913 (34) | 1145 (52) | 852 (22) | 1188 (30) | 1868 (47) | 878 (25) | 676 (18) | 2356 (51) |