Research Article

Incidence, Prevalence, and Mortality Trends in Chronic Obstructive Pulmonary Disease over 2001 to 2011: A Public Health Point of View of the Burden

Figure 4

Age-period-cohort effects in COPD incidence rates for males and females. (a) Age and period effects, by sex. (b) Cohort effect in men (median Polish method). (c) Cohort effect in females (median Polish method). (d) Cohort effect in men (Holford method). (e) Cohort effect in females (Holford method).
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