Subgroup analysis of telehealthcare for patients with chronic obstructive pulmonary disease: the cluster-randomized Danish Telecare North Trial
Flemming Witt Udsen,1 Pernille H Lilholt,2 Ole K Hejlesen,2 Lars H Ehlers1 1Danish Centre for Healthcare Improvements, Aalborg University, Aalborg, Denmark; 2Department of Health Queen Sleigh Bed Science and Technology, Aalborg University, Aalborg, Denmark Purpose: Results from the Danish cluster-randomized trial of telehealthcare to 1,225 patients