Spirometric values in normal Pakistani population

This study was carried out at Karachi to find out the spirometric values in healthy non-smoking Pakistani population of both the sexes of ages from 10 to 69 years. The results were compared with predicted normal values which vary with age, sex, height, ethnic origin and regional conditions. In our population, spirometric values were found to be lower than their matched western counterparts. FVC, FEV, were observed to decrease with age and become comparable with western population around the age of 50 years in case of males but in females difference persists. PEFR also decreased with age in males but in females there was hardly any decline after the age of 45 years