If "yes" to COPD exacerbation, record following items.
date of onset of COPD exacerbation
date
outcome of COPD exacerbation
integer
date of resolution or death
date
severity of COPD excerbation
integer
Subjects who experience more than one moderate exacerbation requiring antibiotic and/or oral corticosteroid treatment during the treatment period and/or experience a severe exacerbation requiring hospitalisation during the course of the study must be withdrawn.
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