Characteristics of the study population stratified for non-shift workers and shift workers
| Non-shift workers (n=5980) Percentage or mean (SD); median | Shift workers (n=532) Percentage or mean (SD); median | |
|---|---|---|
| Age (years) | ||
| 20–44 | 28.5 | 47.4* |
| 45–54 | 47.4 | 42.7* |
| 55–70 | 24.0 | 10.0* |
| Gender (% female) | 76.8 | 59.6* |
| Educational level (% high) | 37.4 | 28.2* |
| Marital status (% married/living together) | 68.3 | 61.1* |
| Smoking status (% smoker) | 24.0 | 32.5* |
| Diet (% MDS≥5) | 54.6 | 58.5 |
| Occupational group† | ||
| White-collar outside healthcare | 80.8 | 51.2* |
| White-collar inside healthcare | 8.9 | 30.5* |
| Blue-collar | 10.3 | 18.3* |
| Occupational PA | ||
| Sedentary job | 53.9 | 33.1* |
| Standing job | 26.8 | 22.9 |
| Manual work | 12.3 | 37.4* |
| Heavy manual work | 7.0 | 6.6 |
| PA type (hours/week) | ||
| Walking | 9.4 (9.9); 6.0 | 14.2 (13.0); 9.0* |
| Cycling | 3.7 (3.7); 3.0 | 3.9 (4.1); 3.0 |
| Exercise | 1.8 (2.4); 1.0 | 2.1 (2.8); 1.0* |
| Chores | 15.8 (11.2); 14.0 | 14.6 (10.7); 12.0* |
| PA intensity (hours/week) | ||
| Moderate PA | 25.2 (15.5); 22.0 | 28.8 (17.0); 26.0* |
| Vigorous PA | 5.5 (4.5); 4.5 | 6.0 (5.2); 5.0* |
| Sports activities | ||
| Plays sports (% yes) | 57.6 | 54.5 |
| Type of sports (% non-individual)‡ | 36.1 | 36.3 |
| Sports intensity (% ≥6.0 MET)‡ | 62.4 | 67.7 |
*Significant difference (p<0.05) between shift workers and non-shift workers.
†Data available for 4513 participants who reported their job (4044 non-shift workers and 469 shift workers).
‡Data available for only 1796 participants (of the 3737 participants who played sports, for 1892 EPIC-Prospect participants and 49 EPIC-MORGEN participants it was unknown what sport they played).
MDS, Mediterranean Diet Score; MET, metabolic equivalent value; PA, physical activity.