Table 1 Demographic characteristics of participants by sex
|  | Men (n = 85)a | Women (n = 127)a |
|---|---|---|
Mean age (years) (SD) | 43 (15) | 44(16) |
Ethnicity | ||
 White | 63 (74%) | 92 (72%) |
 Black | 1 (1%) | 9 (7%) |
 Asian | 5 (6%) | 8 (6%) |
 Mixed and other | 15 (18%) | 14 (11%) |
Age left education | ||
 16 or under | 13 (15%) | 11 (9%) |
 17 to 18 | 23 (27%) | 36 (28%) |
 19+ | 49 (58%) | 78 (61%) |
Smoking status | ||
 Non-smoker | 65 (76%) | 99 (78%) |
 Smoker | 12 (14%) | 13 (10%) |
Mean weight (kg) (SD) | 81 (13) | 67 (13) |
Mean body mass index (kg/m2) (SD) | 26 (4) | 25 (5) |