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Original Research: PULMONARY FUNCTION |

Comparison of Pulmonary Function in Immigrant vs US-Born Asian Indians

Ashok Fulambarker, MD, FCCP; Ahmet Sinan Copur, MD; Mark E. Cohen, PhD; Monali Patel, MD; Sanjay Gill, MD; Stephen T. Schultz, PhD; Philip H. Quanjer, MD, PhD
Author and Funding Information

From the Pulmonary Division (Drs Fulambarker, Copur, Patel, and Gill), Rosalind Franklin University of Medicine and Science/ The Chicago Medical School, Chicago, IL; the Naval Institute for Dental and Biomedical Research (Drs Cohen and Schultz), Great Lakes, IL; and the Departments of Pulmonary Diseases and Pediatrics (Dr Ouanjer), Erasmus Medical Centre, Sophia Children’s Hospital, Erasmus University, Rotterdam, The Netherlands.

Correspondence to: Ashok Fulambarker, MD, FCCP, Pulmonary Division, Rosalind Franklin University of Medicine and Science/ The Chicago Medical School, 3001 Green Bay Rd, North Chicago, IL 60064; e-mail: ashok.fulambarker@va.gov


Reproduction of this article is prohibited without written permission from the American College of Chest Physicians (www.chestpubs.org/site/misc/reprints.xhtml).


© 2010 American College of Chest Physicians


Chest. 2010;137(6):1398-1404. doi:10.1378/chest.09-1911
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Objective:  This study investigated whether there is a difference in pulmonary function between healthy adult US-born Asian Indians and immigrant Asian Indians attributable to country of birth, environmental, and socioeconomic factors.

Design:  FEV1, FVC, and forced mid-expiratory flow between 25% and 75% of vital capacity (FEF25-75) were measured in India-born and US-born subjects residing in the Chicago metropolitan area. Hollingshead Index of Social Position was used to evaluate socioeconomic factors.

Results:  There were 262 India-born (61.8% male), and 200 US-born (50% male) subjects who were healthy lifelong nonsmokers; their age range was 16 to 36 years. US-born Asian Indian men and women were taller and had higher pulmonary function values for height and age compared with immigrant Asian Indian men and women. The differences were most pronounced in women: about 7% for FVC, 9% for FEV1, and 17% for FEF25-75. Immigrant and US-born subjects did not differ in socioeconomic position.

Conclusion:  We conclude that US-born Asian Indian men and women have higher pulmonary function values for age and height compared with immigrant Asian Indian men and women. This probably reflects the effect of differing environmental conditions, which cause year-of-birth trends in lung volumes.

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