Effect of Engagement on Change in HbA1c Level From Baseline
| Time | HbA1c Level, Mean, % | HbA1c Change,a Mean, % | Between-Group Difference in HbA1c Change,a Coefficient | ||
|---|---|---|---|---|---|
| Not Engaged | Engaged | Not Engaged | Engaged | ||
| Baseline | 9.07 | 9.08 | … | … | … |
| 6 months | 8.58 | 8.27 | −0.50 (P = .01) | −0.81 (P <.001) | 0.32 (P = .19) |
| 12 months | 8.52 | 8.55 | −0.61 (P = .01) | −0.51 (P = .001) | 0.10 (P = .71) |
HbA1c = hemoglobin A1c
↵a Within-person change.