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Table 4 Shared decision making questionnaire (SDM-Q-9): raw and adjusted means in intervention and control group at all times of measurement, standard deviation, 95% confidence intervals, p-values; model describing the difference between the groups. Intention-to-treat analysis

From: Shared decision making and patient-centeredness for patients with poorly controlled type 2 diabetes mellitus in primary care—results of the cluster-randomised controlled DEBATE trial

   Intervention group Control group Between group differences
Change from baseline Change from baseline Intervention group - Control group
SDM N Mean SD Adjusted Mean 95% CI p-Value N Mean SD Adjusted Mean 95% CI p-Value Adjusted Mean 95% CI p Value
Baseline 395 23.68 13.6      370 22.42 14.4         
6 months follow up 372 19.59 13.4 -3.57 -4.98 -2.17 <.0001 342 19.21 14.5 -3.20 -4.62 -1.78 <.0001 -0.37 -2.20 1.45 0.6847
12 months follow up 338 19.90 14.3 -3.27 -4.71 -1.82 <.0001 312 19.83 14.7 -2.89 -4.35 -1.44 0.0001
18 months follow up 326 20.83 14.0 -3.28 -4.75 -1.81 <.0001 286 19.64 14.6 -2.91 -4.39 -1.42 0.0002
24 months follow up 318 20.91 14.4 -3.17 -4.66 -1.69 <.0001 284 19.77 15.2 -2.80 -4.30 -1.30 0.0003