Table 1.
Demographic characteristics of the 36,531 UK Biobank participants
| Characteristics | No. (%) |
|---|---|
| Age, mean (SD), years | 68.74 (7.44) |
| Female | 19,396 (53.09%) |
| BMI, mean (SD), kg/m2 | 26.55 (4.21) |
| Townsend deprivation index, mean (SD), points | − 1.90 (2.71) |
| Education Qualifications | |
| College or University degree | 16,999 (46.53%) |
| A levels/AS levels or equivalent | 4812 (13.17%) |
| O levels/GCSEs or equivalent | 7047 (19.29%) |
| CSEs or equivalent | 1497 (4.10%) |
| NVQ or HND or HNC or equivalent | 1970 (5.39%) |
| Other professional qualifications e.g.: nursing, teaching | 1814 (4.97%) |
| None of the above | 2392 (6.55%) |
| Alcohol drinker status | |
| Never | 907 (2.48%) |
| Previous | 773 (2.12%) |
| Current | 34,843 (95.38%) |
| Smoking status | |
| Never | 22,306 (61.06%) |
| Previous | 11,962 (32.74%) |
| Current | 2263 (6.19%) |
| Head motion, mean (SD), mm | 0.12 (0.06) |
| Site information | |
| Site 1 | 22,356 (61.20%) |
| Site 2 | 4861 (13.31%) |
| Site 3 | 9314 (25.49%) |