General characteristics of the study population
| Variable | |
|---|---|
| Age, years | 37.1±22.9 (1–91) |
| Weight, kg | 67.1±22.2 (9.6–130) |
| Body mass index, kg/m2 | 24.9±5.9 (11.1–45.7) |
| Waist/hip ratio | 0.86±0.09 (0.61–1.15) |
| Glycosylated haemoglobin (HbA1c, %) | 5.51±0.58 (3.7–11.7) |
| Glucose, mmol/L | 5.12±1.15 (2.54–21.24) |
| Self-reported diabetes or hyperglycaemia, n (%) | 26 (8.0) |
| Sex, n (%) | |
| Male | 516 (46.3) |
| Female | 599 (53.7) |
| Age group, years, n (%) | |
| 1.5–3 | 21 (1.9) |
| 4–10 | 117 (10.5) |
| 11–18 | 250 (22.4) |
| 19–64 | 575 (51.6) |
| 65+ | 152 (13.6) |
| Region, n (%) | |
| England: North | 251 (22.5) |
| England: Central/Midlands | 212 (19.0) |
| England: South (including London) | 455 (40.8) |
| Scotland | 95 (8.5) |
| Wales | 60 (5.4) |
| Northern Ireland | 42 (3.8) |
| Ethnic group, n (%) | |
| White | 1024 (91.8) |
| Mixed ethnic group | 17 (1.5) |
| Black or Black British | 23 (2.1) |
| Asian or Asian British | 37 (3.3) |
| Any other group | 14 (1.3) |
| National Statistics Socioeconomic Classification, n (%) | |
| Higher managerial and professional occupations | 169 (15.2) |
| Lower managerial and professional occupations | 317 (28.5) |
| Intermediate occupations | 103 (9.3) |
| Small employers and own account workers | 111 (10.0) |
| Lower supervisory and technical occupations | 109 (9.8) |
| Semi-routine occupations | 143 (12.9) |
| Routine occupations | 115 (10.3) |
| Never worked | 26 (2.3) |
| Other | 19 (1.7) |
| Smoking history, n (%) | |
| Current cigarette smoker | 180 (21.5) |
| Ex-regular cigarette smoker | 176 (21.1) |
| Never regular cigarette smoker | 480 (57.4) |
Continuous variables are presented as means±SD (range).