Table 1 Baseline characteristics of the sample
Variable | Control | Intervention | ||||
|---|---|---|---|---|---|---|
% or mean | SD | N | % or mean | SD | N | |
Demographic | ||||||
Nationality | ||||||
UK | 75.74 | - | 537 | 74.46 | - | 548 |
Non UK | 24.26 | - | 172 | 25.54 | - | 188 |
Ethnicity | ||||||
White British | 67.42 | - | 476 | 65.98 | - | 483 |
White other | 5.95 | - | 42 | 6.97 | - | 51 |
Mixed | 3.97 | - | 28 | 2.46 | - | 18 |
Asian and Asian British | 8.64 | - | 61 | 8.61 | - | 63 |
Black and Black British | 2.27 | - | 16 | 2.46 | - | 18 |
Chinese | 10.48 | - | 74 | 12.16 | - | 89 |
Other | 1.27 | - | 9 | 1.37 | - | 10 |
Gender | ||||||
Female | 55.15 | - | 391 | 61.55 | - | 453 |
Male | 44.85 | - | 318 | 38.45 | - | 283 |
Age | 19.04 | 2.91 | 709 | 18.76 | 1.99 | 736 |
Fruit and vegetable intake | ||||||
Mean portions | 6.36 | 4.96 | 669 | 6.67 | 5.17 | 701 |
Physical activity | ||||||
METS | 3402.37 | 5101.72 | 688 | 3140.11 | 3861.42 | 709 |
Mean hours sitting | 344.36 | 179.09 | 609 | 336.17 | 171.42 | 641 |
Alcohol consumption | ||||||
Mean total units in last 7 days | 11.88 | 18.54 | 708 | 11.17 | 18.72 | 736 |
Mean number of days binge drinking in last 7 days (drinkers only) | 1.00 | 1.04 | 447 | 1.04 | 1.14 | 425 |
Mean alcohol objective (FAEE) | 2.07 | 2.02 | 54 | 2.08 | 2.56 | 54 |
Smoking | ||||||
Has smoked | 37.24 | - | 264 | 37.23 | - | 274 |
Has never smoked | 62.76 | - | 445 | 62.77 | - | 462 |
Current smokers | 11.99 | - | 85 | 11.28 | - | 83 |
Not a current smoker | 88.01 | - | 624 | 88.72 | - | 653 |
Cigarettes smoked per week | 3.19 | 14.12 | 496 | 1.88 | 10.95 | 483 |
Smoking objective (cotinine) | .48 | .49 | 54 | .45 | .42 | 54 |
Smoking objective (nicotine) | 7.19 | 18.67 | 54 | 9.49 | 19.16 | 54 |
Other outcomes | ||||||
EQ-5D-3L | ||||||
Mean health index scores from EQ-5D-3L (VAS) | .90 | .14 | 708 | .91 | .14 | 735 |
Mean health index score from EQ-5D-3L (TTO) | .92 | .13 | 708 | .92 | .14 | 735 |
Mean EQ-5D-3L visual analogue scale | 78.21 | 13.61 | 706 | 78.11 | 15.85 | 730 |
Recreational drugs | ||||||
Have taken recreational drugs (SSC measure)1 | 18.73 | ± 9.54 | 132 | 16.49 | ± 9.56 | 121 |
Have not taken recreational drugs (SSC measure) | 81.27 | 575 | 83.51 | 613 | ||
Have taken recreational drugs (biochemical measure) | 39.53 | - | 17 | 45.71 | - | 16 |
Have not taken recreational drugs (biochemical measure) | 60.47 | - | 26 | 54.29 | - | 19 |
BMI | ||||||
Mean BMI self-report | 22.06 | 3.71 | 662 | 22.24 | 3.81 | 695 |
Mean BMI objective | 22.28 | 3.85 | 54 | 22.06 | 3.88 | 54 |
Social cognition variables | ||||||
Fruit & veg | ||||||
Self-efficacy | 5.71 | 1.48 | 703 | 5.80 | 1.36 | 733 |
Perceived control | 5.51 | 1.47 | 703 | 5.53 | 1.45 | 733 |
Intention | 5.24 | 1.47 | 703 | 5.39 | 1.45 | 733 |
Physical activity | ||||||
Self-efficacy | 5.97 | 1.37 | 707 | 6.03 | 1.31 | 734 |
Perceived control | 5.66 | 1.46 | 707 | 5.58 | 1.46 | 734 |
Intention | 5.87 | 1.36 | 707 | 5.86 | 1.37 | 734 |
Binge drinking | ||||||
Self-efficacy | 5.48 | 2.15 | 705 | 5.38 | 2.20 | 732 |
Perceived control | 5.94 | 1.55 | 705 | 6.05 | 1.43 | 732 |
Intention | 3.20 | 1.96 | 705 | 3.12 | 1.99 | 732 |
Smoking | ||||||
Self-efficacy | 4.94 | 2.48 | 706 | 4.90 | 2.51 | 733 |
Perceived control | 6.39 | 1.45 | 706 | 6.51 | 1.27 | 733 |
Intention | 1.56 | 1.41 | 706 | 1.52 | 1.30 | 733 |