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Table 5 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. Per-protocol 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 349 23.36 13.3      370 22.42 14.4         
6 months follow up 328 19.83 13.4 -2.98 -4.44 -1.51 0.0001 342 19.21 14.5 -3.11 -4.50 -1.71 <.0001 0.13 -1.71 1.97 0.8893
12 months follow up 296 20.32 14.2 -2.57 -4.08 -1.07 0.0010 312 19.83 14.7 -2.70 -4.14 -1.27 0.0003
18 months follow up 289 20.90 13.8 -2.72 -4.24 -1.20 0.0006 286 19.64 14.6 -2.85 -4.31 -1.38 0.0002
24 months follow up 282 21.05 14.4 -2.57 -4.12 -1.02 0.0013 284 19.77 15.2 -2.70 -4.19 -1.21 0.0004