All COPD patients living in the southern part of Rogaland county in Western Norway, who were monitored at home by TVC following discharge after emergency hospitalization for COPD exacerbation at Stavanger University Hospital, or at Dalane Medical Center (DMC) in Egersund, or who had tele-monitoring at home under outpatient treatment for acute COPD deterioration during a pilot project period (16th April 2010 - 31st December 2011)