Care management intervention to strengthen self-care of multimorbid patients with type 2 diabetes in a German primary care network: A randomized controlled trial

Dominik Ose, Martina Kamradt, Marion Kiel, Tobias Freund, Werner Besier, Manfred Mayer, Johannes Krisam, Michel Wensing, Hans-Joachim Salize, Joachim Szecsenyi, Dominik Ose, Martina Kamradt, Marion Kiel, Tobias Freund, Werner Besier, Manfred Mayer, Johannes Krisam, Michel Wensing, Hans-Joachim Salize, Joachim Szecsenyi

Abstract

Purpose: This study aimed to assess the effectiveness of a care management intervention in improving self-management behavior in multimorbid patients with type 2 diabetes; care was delivered by medical assistants in the context of a primary care network (PCN) in Germany.

Methods: This study is an 18-month, multi-center, two-armed, open-label, patient-randomized parallel-group superiority trial (ISRCTN 83908315). The intervention group received the care management intervention in addition to the usual care. The control group received usual care only. The primary outcome was the change in self-care behavior at month 9 compared to baseline. The self-care behavior was measured with the German version of the Summary of Diabetes Self-Care Activities Measure (SDSCA-G). A multilevel regression analysis was applied.

Results: We assigned 495 patients to intervention (n = 252) and control (n = 243). At baseline, the mean age was 68 ±11 years, 47.8% of the patients were female and the mean HbA1c was 7.1±1.2%. The primary analysis showed no statistically significant effect, but a positive trend was observed (p = 0.206; 95%-CI = -0.084; 0.384). The descriptive analysis revealed a significantly increased sum score of the SDSCA-G in the intervention group over time (P = 0.012) but not in the control group (p = 0.1973).

Conclusion: The sum score for self-care behavior markedly improved in the intervention group over time. However, the results of our primary analysis showed no statistically significant effect. Possible reasons are the high baseline performance in our sample and the low intervention fidelity. The implementation of this care management intervention in PCNs has the potential to improve self-care behavior of multimorbid patients with type 2 diabetes.

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1. CONSORT flowchart.
Fig 1. CONSORT flowchart.
Fig 2. PCN-based care management.
Fig 2. PCN-based care management.
Fig 3. Timeline and care provided in…
Fig 3. Timeline and care provided in both groups.

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