ISRCTN 83908315.

Study name	Practice network‐based care management for people with type 2 diabetes and multiple comorbidities (GEDIMAplus)
Methods	Multicentre RCT involving 30 study centres
Participants	n = 582 adults with type 2 diabetes mellitus and enrolled in the DMP Diabetes programme and at least 2 severe chronic conditions and 1 informal caregiver per participant
Interventions	Three main elements: 1) 3 home visits including structured assessment of medical and social needs; 2) 24 structured telephone monitoring contacts; and 3) self‐monitoring of blood glucose levels at 3‐monthly intervals. Delivered by trained healthcare assistants as an add‐on to usual care.
Outcomes	Primary: between‐group differences in changes of diabetes‐related self care behaviours using the revised Summary of Diabetes Self‐Care Activities (SDSCA‐G). Secondary: between‐group differences in the SDSCA‐G subscales, glycosylated haemoglobin A level, health‐related quality of life, self‐efficacy, differences in severe symptomatic hypoglycaemia, cost‐effectiveness, and financial family burden
Starting date	participant recruitment started on 1 February 2014
Contact information	kayvan.bozorgmehr@med.uni‐heidelberg.de
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