Table 1 Number of participants and their characteristics. Midrange BMI is defined as 18.5–25. Optimal sleep is defined as 7–9 h a night. Healthy diet is defined as having 2 or more of 3 healthy diet attributes (sufficiently low meat, high fruit/vegetable, high fish). Physical activity is measured in MET minutes per week. Screen time is measured as the number of hours of non-work computer and TV time per day. Alcohol frequency is given as 1 = ‘never’, 2 = ‘special occasions only’, 3 = ‘one to three times per month’, 4 = ‘once or twice per week’, and 5 = ‘three to four times per week’. Social deprivation measured using the Townsend deprivation index based on postcode
