Table 1. Baseline characteristics of participants assigned to interventions or control.
| Total (n = 113) |
Control (n = 17) |
Brief Support (n = 48) | Brief Support plus Shopping Feedback (n = 48) | |||||
|---|---|---|---|---|---|---|---|---|
| Mean/n | SD/% | Mean/n | SD/% | Mean/n | SD/% | Mean/n | SD/% | |
| Age, years, mean (SD) | 62.4 | 10.8 | 62.9 | 11.2 | 64.7 | 9.2 | 59.9 | 11.7 |
| Gender, female | 77 | 68.1 | 11 | 64.7 | 34 | 70.8 | 32 | 66.7 |
| BMI, kg/m2, mean (SD) | 27.1 | 4.7 | 26.0 | 5.1 | 26.8 | 4.0 | 27.8 | 5.2 |
| BMI categories | ||||||||
| Normal weight (18.5–24.9) | 38 | 33.6 | 7 | 41.2 | 14 | 29.2 | 17 | 35.4 |
| Overweight (25–29.9) | 53 | 46.9 | 8 | 47.1 | 27 | 56.3 | 18 | 37.5 |
| Obesity (≥30) | 22 | 19.5 | 2 | 11.8 | 7 | 14.6 | 13 | 27.1 |
| Blood pressure, mean (SD) | ||||||||
| Systolic, mmHg | 131.5 | 17.5 | 130.5 | 11.6 | 130.0 | 19.6 | 133.3 | 17.2 |
| Diastolic, mmHg | 79.2 | 9.8 | 77.4 | 8.1 | 77.2 | 10.8 | 81.8 | 8.9 |
| Smoking | ||||||||
| Current | 6 | 5.3 | 1 | 5.9 | 2 | 4.2 | 3 | 6.3 |
| Ex-smoker | 37 | 32.7 | 5 | 29.4 | 17 | 35.4 | 15 | 31.3 |
| Never | 67 | 59.3 | 10 | 58.8 | 28 | 58.3 | 29 | 60.4 |
| Missing | 3 | 2.7 | 1 | 5.9 | 1 | 2.1 | 1 | 2.1 |
| Alcohol intake | ||||||||
| Never | 7 | 6.2 | 1 | 5.9 | 1 | 2.1 | 5 | 10.4 |
| Sometimes | 46 | 40.7 | 7 | 41.2 | 21 | 43.8 | 18 | 37.5 |
| Every week | 57 | 50.4 | 8 | 47.1 | 24 | 50.0 | 25 | 52.1 |
| Missing | 3 | 2.7 | 1 | 5.9 | 2 | 4.2 | 0 | 0.0 |
| Ethnic group | ||||||||
| White | 107 | 94.7 | 15 | 88.2 | 45 | 93.8 | 47 | 97.9 |
| Black/Asian | 3 | 2.7 | 0 | 0.0 | 2 | 4.2 | 1 | 2.1 |
| Mixed/Other | 1 | 0.9 | 1 | 5.9 | 0 | 0.0 | 0 | 0.0 |
| Missing | 2 | 1.8 | 1 | 5.9 | 1 | 2.1 | 0 | 0.0 |
| Education | ||||||||
| No formal qualifications | 16 | 14.2 | 1 | 5.9 | 9 | 18.8 | 6 | 12.5 |
| Secondary education | 49 | 43.4 | 6 | 35.3 | 21 | 43.8 | 22 | 45.8 |
| Higher education | 46 | 40.7 | 9 | 52.9 | 17 | 35.4 | 20 | 41.7 |
| Missing | 2 | 1.8 | 1 | 5.9 | 1 | 2.1 | 0 | 0.0 |
| Household size, median (IQR) | 2.4 | 1.2 | 2.4 | 1.2 | 2.3 | 1.2 | 2.5 | 1.3 |
| Adults, mean (SD) | 2.1 | 0.9 | 2.1 | 0.8 | 2.0 | 0.7 | 2.2 | 1.0 |
| Children, mean (SD) | 0.3 | 0.8 | 0.2 | 0.6 | 0.3 | 0.8 | 0.4 | 0.8 |
| Weekly grocery shopping, e.g., spending >£25/trip | ||||||||
| >Once a week | 32 | 28.3 | 3 | 17.7 | 9 | 18.8 | 20 | 41.7 |
| Once a week | 64 | 56.6 | 9 | 52.9 | 31 | 64.6 | 24 | 50.0 |
| Once a fortnight | 6 | 5.3 | 2 | 11.8 | 2 | 4.2 | 2 | 4.2 |
| Once a month | 6 | 5.3 | 1 | 5.9 | 4 | 8.3 | 1 | 2.1 |
| <Once a month | 3 | 2.7 | 1 | 5.9 | 1 | 2.1 | 1 | 2.1 |
| Missing | 2 | 1.8 | 1 | 5.9 | 1 | 2.1 | 0 | 0.0 |
| Relevant health history | ||||||||
| Family history | 16 | 14.2 | 4 | 23.5 | 6 | 12.5 | 6 | 12.5 |
| CVD | 4 | 3.5 | 2 | 11.8 | 1 | 2.1 | 1 | 2.1 |
| High blood pressure | 27 | 23.9 | 4 | 23.5 | 14 | 29.2 | 9 | 18.8 |
| Diabetes | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
| AF | 4 | 3.5 | 2 | 11.8 | 1 | 2.1 | 1 | 2.1 |
| CKD | 1 | 0.9 | 0 | 0.0 | 1 | 2.1 | 0 | 0.0 |
| Relevant medications | ||||||||
| Statins | 2 | 1.8 | 0 | 0.0 | 1 | 2.1 | 1 | 2.1 |
AF, atrial fibrillation; BMI, body mass index; CKD, chronic kidney disease; CVD, cardiovascular disease; IQR, interquartile range.