A Comparison of SYMBICORT® pMDI With Formoterol Turbuhaler® in Subjects With COPD

Pre-dose Forced Expiratory Volume in 1 Second (FEV1)

Change in pre-dose FEV1 from baseline to the average of the randomized treatment period, as calculated by averaging treatment period FEV1 values and subtracting the pre-dose value.

Time frame: 12 months

Morning Peak Expiratory Flow (PEF)

Change in morning PEF from baseline to the average of the randomized treatment period, as calculated by averaging treatment period PEF values and subtracting the baseline morning PEF value.

Time frame: 12 months

Evening PEF

Change in evening PEF from baseline to the average of the randomized treatment period, as calculated by averaging treatment period PEF values and subtracting the baseline evening PEF value.

Time frame: 12 months

Dyspnea Symptom Scores

Change from baseline of Dyspnea symptoms evaluated using the breathlessness diary, a 5-point Likert-type scale, ranging from 0 to 4 with higher scores indicating a more severe manifestation of the Dyspnea symptom. Change from baseline was calculated by averaging treatment period Dyspnea scores and subtracting the baseline Dyspnea scores.