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Original Research

COPD disease severity and the risk of venous thromboembolic events: a matched case–control study

, , , &
Pages 899-908 | Published online: 28 Apr 2016

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.

Abbreviations: COPD, chronic obstructive pulmonary disease; CPRD, Clinical Practice Research Datalink; GP, general practitioner; VTE, venous thromboembolism.
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.

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