- Patients with a post-bronchodilator forced expiratory volume in 1 second (FEV1) ≥30% and < 80% of the predicted normal, and post-bronchodilator FEV1/forced vital capacity (FVC) < 0.7 at Visit 2. For non-Japanese patients predicted FEV1 should be calculated according to Quanjer predictive equations [Quanjer PH 1993], for Japanese patients predicted FEV1 should be calculated according to Japanese Respiratory Society predictive tables [Japan Respiratory Society 2001].