Fig. 2From: Eligibility of real-life patients with COPD for inclusion in trials of inhaled long-acting bronchodilator therapySelection of study population. Patient flow chart showing selection of study population from the Optimum Patient Care Research Database (OPCRD). Abbreviations: COPD = chronic obstructive pulmonary disease; FEV1 = forced expiratory volume in one second; mMRC = modified Medical Research Council score [2]Back to article page