Overview over the shift schedules for the high quality studies
Study | Quality score | Exposure shift workers | Continuity (including/excluding weekends) | Rotation | Shift work experience | Exposure day workers |
Prospective cohort studies | ||||||
Tüchsen et al 35 | 67% |
| Not given | Fixed and rotating (speed/direction not given) | Not given | Day work |
Tüchsen et al 36 | 67% | Irregular working hours: 2-shift system, fixed evening shifts, 3-shift system and fixed nights | Not given | Fixed and rotating |
| Permanent day work |
Case-control studies | ||||||
Kleiven et al 38 | 76% | 3-Shift system: slowly rotating between day/evening/night | Not given |
|
| Day work |
Bourbonnais et al 39 | 59% | ‘Evening, night, shift’: assumed fixed evening, fixed night and rotating shift schedules | Not given | Fixed and rotating (speed/direction not given) |
| Day work |
Cross-sectional studies | ||||||
Higashi et al 40 | 67% | 3-Shift system: rotated between starting times: 06:00, 14:00 and 22:00 h | Continuous | Rotating (speed/direction not given) | Not given | Not given |
Niedhammer et al 41 | 62% |
| Not given | Fixed and rotating (speed/direction not given) | Not given | Day work |
Böckerman and Laukkanen42 | 54% | Shift and period work as one group (definition used: hours worked not limited to the usual daily/weekly hours) | Not given | Not given | Not given | Non-shift and non-period workers |
Ohayon et al 43 | 54% |
| Not given | Fixed and rotating (speed/direction not given) | Not given | Daytime (08:00–09:00 h to 16:00–17:00 h) |
Eyal et al 44 | 54% | Shift work | Not given | Not given |
| Day work: white collar workers |