Figure 1From: Population-based cohort study of outpatients with pneumonia: rationale, design and baseline characteristics Data sources. Data source #1 = CAP Clinical Registry. Data source #2 = Alberta Health Care Insurance Plan Registry File. Data source #3 = Canadian Institutes for Health Information Discharge Abstract Database. Data source #4 = Ambulatory and Physician Claims Database. Data source #5 = Alberta Blue Cross. All data obtained from Alberta Health and Wellness.Back to article page