The prevalence of asthma in India's largest city may be greater than physicians' diagnoses indicate.
As part of the multicenter European Community Respiratory Health Survey, researchers in Mumbai (formerly Bombay) interviewed 2313 adults about asthma symptoms, diagnoses, and medications they may have taken in the previous 12 months. In a second phase of the study, the researchers gathered more detailed information—smoking histories, housing characteristics, serum IgE levels, and results from skin tests with nine allergens, spirometry, and methacholine challenge tests—from a subset of 20% of the initial group.
Voelker R. Asthma in India. JAMA. 1998;280(10):873. doi:10.1001/jama.280.10.873-JWM80006-2-1