Figure 2From: Impact of chronic obstructive pulmonary disease (COPD) in the Asia-Pacific region: the EPIC Asia population-based surveyPrevalence, frequency, and seasonal variation of exacerbations. (A) Proportion of study subjects who reported experiencing one or more exacerbations within the 12 months prior to the survey. (B) Median number of exacerbations reported by subjects over this period. (C) Proportion of subjects who reported exacerbations within each month over this period.Back to article page