Figures & data
Figure 1 Patient flow: selection of cases and matched controls from a source population of patients contributing data to CPRD with a diagnosis of COPD.
![Figure 1 Patient flow: selection of cases and matched controls from a source population of patients contributing data to CPRD with a diagnosis of COPD.](/cms/asset/0af5df8e-b313-48d3-b268-2a86d79426fd/dcop_a_100533_f0001_b.jpg)
Table 1 Characteristics of cases and matched controls, and ORs for first VTE (univariate analyses adjusted for age, sex, and GP practice by matching)
Table 2 Characteristics of frequent and infrequent exacerbators, separately by cases and controls
Table 3 Percentage of frequent exacerbators with mild, moderate, severe, and very severe disease (based on the control group only)
Table 4 Summary of main results