Table 6.
Baseline and follow-up behavioural beliefs, illness perceptions, strength of habit and diabetes knowledge by study group and between-group differences in the ADDITION-Plus trial
| Measuresa | Comparison group | Intervention group | Adjusted difference between groups (95% CI) | ||
|---|---|---|---|---|---|
| Baseline | 1 year | Baseline | 1 year | ||
| Intention physical activity (1 to 5) | 3.72 (0.83) | 3.48 (0.79) | 3.78 (0.74) | 3.64 (0.81) | 0.14 (0.007, 0.27) |
| Intention diet (1 to 5) | 3.71 (0.79) | 3.39 (0.84) | 3.75 (0.76) | 3.51 (0.81) | 0.11 (−0.03, 0.25) |
| Intention medication adherence (1 to 5) | 4.45 (0.56) | 4.47 (0.60) | 4.40 (0.67) | 4.57 (0.58) | 0.12 (0.01, 0.23) |
| Intention smoking (1 to 5) | 3.16 (1.11) | 3.12 (1.06) | 3.20 (0.96) | 3.20 (1.11) | 0.003 (−0.32, 0.33) |
| Illness perception consequences (1 to 5) | 2.90 (0.65) | 2.88 (0.69) | 2.89 (0.64) | 2.95 (0.66) | 0.08 (−0.03, 0.18) |
| Illness perception treatment control (1 to 5) | 3.80 (0.52) | 3.67 (0.55) | 3.75 (0.48) | 3.72 (0.52) | 0.08 (−0.01, 0.16) |
| Perceived behavioural control physical activity (1 to 5) | 3.72 (0.91) | 3.51 (0.90) | 3.82 (0.79) | 3.67 (0.88) | 0.12 (−0.03, 0.26) |
| Perceived behavioural control diet (1 to 5) | 3.75 (0.83) | 3.58 (0.85) | 3.70 (0.89) | 3.67 (0.87) | 0.11 (−0.03, 0.26) |
| Perceived behavioural control medication (1 to 5) | 4.49 (0.56) | 4.47 (0.56) | 4.47 (0.63) | 4.56 (0.58) | 0.10 (−0.002, 0.20) |
| Perceived behavioural control smoking (1 to 5) | 2.70 (0.97) | 2.90 (0.79) | 2.79 (1.01) | 2.91 (1.07) | −0.07 (−0.44, 0.30) |
| Behavioural beliefs physical activity (1 to 5) | 4.01 (0.75) | 3.92 (0.64) | 3.98 (0.62) | 3.90 (0.72) | −0.002 (−0.11, 0.11) |
| Behavioural beliefs diet (1 to 5) | 3.83 (0.75) | 3.75 (0.75) | 3.90 (0.68) | 3.81 (0.73) | 0.02 (−0.10, 0.14) |
| Perceived effectiveness of lifestyle change (1 to 5) | 3.95 (0.72) | 3.82 (0.76) | 3.91 (0.65) | 3.84 (0.71) | 0.05 (−0.08, 0.18) |
| Strength of PA habit change reported at 1 year (1 to 5) | – | 3.27 (0.72) | – | 3.41 (0.71) | 0.14 (−0.05, 0.32) |
| Strength of diet habit change reported at 1 year (1 to 5) | – | 3.66 (0.55) | – | 3.64 (0.61) | −0.02 (−0.15, 0.12) |
| Diabetes knowledge (self-administered questionnaire) (0 to 47) | – | 24.8 (9.18) | – | 25.8 (8.53) | 0.92 (−0.72, 2.57) |
Values are mean (SD) unless stated
aValues in parentheses represent the possible range for each measure
PA, physical activity