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Table 2 Changes of the HbA1c level from baseline over all follow-ups among groups, between group differences, and interaction between group and time

From: Patient-centered communication and shared decision making to reduce HbA1c levels of patients with poorly controlled type 2 diabetes mellitus - results of the cluster-randomized controlled DEBATE trial

  Intervention group Control group Between group differences Interaction between
Change from baseline Change from baseline Intervention group - Control group group and time
  N Mean SD Adjusted Mean 95% CI p-Value N Mean SD Adjusted Mean 95% CI p-Value Adjusted Mean 95% CI p-Value p Value
HbA1c                    0.1538
Baseline 435 8.99 1.3      398 8.89 1.2          
6 months follow up 404 8.48 1.4 −0.53 −0.66 − 0.41 <.0001 366 8.39 1.4 − 0.51 − 0.64 − 0.38 <.0001 − 0.02 − 0.19 0.14 0.7985  
12 months follow up 376 8.32 1.4 −0.58 − 0.70 − 0.45 <.0001 339 8.40 1.4 −0.55 −0.69 − 0.42 <.0001  
18 months follow up 353 8.27 1.4 −0.64 −0.77 −0.51 <.0001 319 8.30 1.4 −0.62 −0.75 − 0.48 <.0001  
24 months follow up 338 8.21 1.4 −0.67 −0.80 −0.54 <.0001 305 8.34 1.4 −0.64 −0.78 − 0.51 <.0001