Table 5 Sub-group analysis of the impact of the TEXT ME intervention on adherence to ≥ 4 dietary guideline recommendation items at six months
| Â | N (Intervention / Standard care) | Text-message intervention | Standard care | RR (95% CI) | p value interaction |
|---|---|---|---|---|---|
Age | |||||
  > 60 years | 147/144 | 139 (94.6%) | 114 (79.2%) | 1.19 (1.09–1.31) | 0.400 |
  ≤ 60 years | 191/207 | 175 (91.6%) | 150 (72.5%) | 1.26 (1.15–1.39) |  |
Sex | |||||
 Female | 62/60 | 57 (91.9%) | 44 (73.3%) | 1.23 (1.15–1.32) | 0.850 |
 Male | 276/291 | 257 (93.1%) | 220 (75.6%) | 1.25 (1.06–1.49) |  |
Educationa | |||||
  > 13 years | 59/81 | 57 (96.6%) | 60 (74.1%) | 1.30 (1.14–1.50) | 0.378 |
  ≤ 13 years | 278/267 | 256 (92.1%) | 202 (75.7%) | 1.22 (1.13–1.31) |  |
BMI | |||||
  ≥ 25 kg/m2 | 264/278 | 246 (93.2%) | 206 (74.1%) | 1.26 (1.16–1.36) | 0.305 |
  < 25 kg/m2 | 74/73 | 68 (91.9%) | 58 (79.5%) | 1.16 (1.01–1.32) |  |
Smoking | |||||
 Yes | 177/190 | 157 (88.7%) | 138 (72.6%) | 1.16 (1.06–1.26) | 0.089 |
 No | 161/161 | 157 (97.5%) | 126 (78.3%) | 1.29 (1.17–1.43) |  |
Cardiac rehabilitation attendanceb | |||||
 Yes | 151/143 | 144 (95.4%) | 118 (82.5%) | 1.22 (1.10–1.35) | 0.767 |
 No | 186/208 | 169 (90.9%) | 146 (70.2%) | 1.25 (1.14–1.36) |  |