Secondary outcomes: knowledge and realistic expectations (questions answered correctly)
| Intervention decision aid | Control usual care | Unadjusted OR | Adjusted* OR (95% CI) | ICC | p Value | |
|---|---|---|---|---|---|---|
| Knowledge | ||||||
| Number | 95 | 80 | ||||
| Which choice has the greatest chance of lowering your blood sugar? | 49 (51.6%) | 23 (28.8%) | 2.63 | 1.31 (1.14 to 1.50) | 0.071 | <0.001 |
| Which choice has the greatest chance of lowering your complications? | 29 (30.5%) | 23 (28.8%) | 1.09 | 1.20 (0.07 to 19.05) | 0.202 | 0.90 |
| Realistic expectations | ||||||
| If you take insulin, about how many times might you experience ‘hypos’ in a year? | 77/95 (81.0%) | 4/75 (5.2%) | 75.9 | † | – | <0.001‡ |
| If you take insulin, about how much more weight might you gain in a year? | 67/95 (70.5%) | 4/75 (5.3%) | 42.5 | † | – | <0.001‡ |
| Out of 100 people like you who take insulin, how many may get complications in 5 years? | 25/95 (26.3%) | 4/80 (5%) | 6.8 | † | – | <0.001‡ |
*Adjusted for clustering, insulin initiation, age, gender and education level.
†Numbers answering correctly in the control group were too few to control for clustering.
‡χ2 p value.