Table 1.
Characteristics of employed UK Biobank participants of European descent by current shift work (n = 189,488)
| Current work schedule | |||||
|---|---|---|---|---|---|
| Day workers | Shift work without nights | Sometimes night shift work | Usual night shift work | Always night shift work | |
| N | 158,839 | 15,338 | 8,718 | 2,251 | 4,342 |
| Age, years | 53.6 (7.1) | 53.3 (7.0) | 52.0 (6.8) | 51.7 (6.7) | 52.2 (6.8) |
| Male sex, n (%) | 75,307 (47.4) | 7,392 (48.2) | 5,508 (63.2) | 1,469 (65.3) | 2,773 (63.9) |
| BMI, kg/m2 | 27.1 (4.6) | 27.8 (4.9) | 28.2 (4.8) | 28.2 (4.8) | 28.6 (4.8) |
| Sleep duration, h | 7.1 (0.9) | 7.0 (1.0) | 6.9 (1.0) | 6.9 (1.1) | 6.8 (1.2) |
| Townsend deprivation index* | −1.72 (2.79) | −0.97 (3.09) | −1.00 (3.10) | −0.93 (3.12) | −0.84 (3.09) |
Data are mean (SD) unless otherwise indicated.
*
Positive values of the index will indicate areas with high material deprivation, whereas negative values will indicate relative affluence.