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Increased rates of asthma among World Trade Center disaster responders.

Kim-H; Herbert-R; Landrigan-P; Markowitz-SB; Moline-JM; Savitz-DA; Todd-AC; Udasin-IG; Wisnivesky-JP
Am J Ind Med 2012 Jan; 55(1):44-53
Background: Studies have documented high rates of asthma symptoms among responders to the World Trade Center (WTC) disaster. However, whether there are increased rates of asthma among responders compared to the general population is unknown. Methods: The study population consisted of a prospective cohort of 20,834 responders participating in the WTC Medical Monitoring and Treatment Program between July 2002 and December 2007. We calculated prevalence and standardized morbidity ratios (SMRs) of lifetime asthma and 12-month asthma (defined as > / = 1 attacks in the prior 12 months) among WTC responders. The comparison population consisted of > 200,000 adults who completed the National Health Interview Survey in 2000 (for pre-9/11 comparisons) and between 2002 and 2007 (for post-9/11 comparisons). Results: WTC responders were on average 43 + / - 9 years old, 86% male, 59% white, and 42% had an occupation in protective services. The lifetime prevalence of asthma in the general population was relatively constant at about 10% from 2000 to 2007. However, among WTC responders, lifetime prevalence increased from 3% in 2000, to 13% in 2002, and 19% in 2007. The age-adjusted overall SMR for lifetime asthma among WTC responders was 1.8 (95% CI: 1.8-1.9) for men and 2.0 (95% CI: 1.9-2.1) for women. Twelve-month asthma was also more frequent among WTC responders compared to the general population (SMR 2.4, 95% CI: 2.2-2.5) for men and 2.2 (95% CI: 2.0-2.5) for women. Conclusions: WTC responders are at an increased risk of asthma as measured by lifetime prevalence or active disease.
Bronchial-asthma; Emergency-responders; Employee-exposure; Employee-health; Medical-services; Medical-monitoring; Morbidity-rates; Men; Women; Lifespan; Respiratory-system-disorders; Pulmonary-system-disorders; Lung-disorders; Author Keywords: World Trade Center responders; asthma; NHIS
Juan P.Wisnivesky, MD, DrPH, Department of Preventive Medicine, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029-6574
Publication Date
Document Type
Journal Article
Email Address
Funding Type
Contract; Cooperative Agreement
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U10-OH-008232; Cooperative-Agreement-Number-U10-OH-008225; Cooperative-Agreement-Number-U10-OH-008239; Cooperative-Agreement-Number-U10-OH-008216; Cooperative-Agreement-Number-U10-OH-008223; Cooperative-Agreement-Number-U10-OH-008275; Contract-200-2002-0038; Cooperative-Agreement-Number-U01-OH-010399; B02012012
Issue of Publication
Source Name
American Journal of Industrial Medicine
Performing Organization
Mount Sinai School of Medicine of New York