OBJECTIVE: @entity1030 ( @entity1030 ) in older @entity1 is reported to be not only common, but also frequently overlooked and untreated by general practitioners. @entity3311 is one of the major components of @entity1030 and can be readily screened. This study investigates the prevalence of chronic @entity3617 and related symptoms in Iran with special reference to @entity1030 . METHODOLOGY: A random sample of 4636 @entity1 aged 35 years and over, attended a research clinic for interview and physical examinations. Those reporting classic symptoms of chronic @entity3617 were referred to a pulmonary clinic for pulmonary function testing. RESULTS: Two hundred and sixteen @entity1 (4.65%) had chronic @entity3617 . Among these, 78 (36.1%) had @entity1224 . Decreased forced expiratory volume in 1 s/forced vital capacity to levels of less than 70% were recorded in 45 @entity1 (42.9% of the tested population). Less than 25% of the @entity1 had a previous diagnosis of @entity1030 . CONCLUSION: Obstructive airway diseases are under-diagnosed in developing countries. Physicians practising in such areas of the world should be aware, and try to detect the subclinical illnesses, especially in urban areas.

Prevalence of chronic XXXX and chronic respiratory symptoms in adults over the age of 35 years in Isfahan, Iran in 1998.

@entity1 :: ('9606', 'Species') :: ['participants', 'patients'] @entity3617 :: ('MESH:D001991', 'Disease') :: ['bronchitis'] @entity3311 :: ('MESH:D029481', 'Disease') :: ['Chronic bronchitis'] @entity1030 :: ('MESH:D029424', 'Disease') :: ['chronic bronchitis and/or airways disease', 'Chronic obstructive airways disease', 'COPD'] @entity1224 :: ('MESH:D000402', 'Disease') :: ['obstructive airways disease']
@entity3617 :: (MESH:D001991,Disease) :: ['bronchitis']
