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General and abdominal obesity and incident asthma in adults: the HUNT study

Brumpton, Ben Michael; Langhammer, Arnulf; Romundstad, Pål Richard; Chen, Yue; Mai, Xiao-Mei
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2445725
Date
2013
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  • Institutt for samfunnsmedisin og sykepleie [2408]
  • Publikasjoner fra CRIStin - NTNU [26591]
Original version
European Respiratory Journal. 2013, 41 (2), 323-329.   10.1183/09031936.00012112
Abstract
Measures of body mass index (BMI) and waist circumference define general obesity and abdominal obesity respectively. While high BMI has been established as a risk factor for asthma in adults, waist circumference has seldom been investigated.

To determine the association between BMI, waist circumference and incident asthma in adults, we conducted a prospective study (n=23,245) in a population living in Nord-Trøndelag, Norway in 1995–2008.

Baseline BMI and waist circumference were measured and categorised as general obesity (BMI ≥30.0 kg·m2) and abdominal obesity (waist circumference ≥88 cm in females and ≥102 cm in males). Incident asthma was self-reported new-onset cases during an 11-yr follow-up period. Odds ratios for asthma associated with obesity were calculated using multivariable logistic regression.

General obesity was a risk factor for asthma in females (OR 1.96, 95% CI 1.52–2.52) and males (OR 1.84, 95% CI 1.30–2.59). In females, after additional adjustment for BMI, abdominal obesity remained a risk factor for asthma development (OR 1.46, 95% CI 1.04–2.05). Abdominal obesity seems to increase the risk of incident asthma in females in addition to BMI, indicating that using both measures of BMI and waist circumference in females may be a superior clinical assessment for asthma risk than any measure alone.
Publisher
European Respiratory Society
Journal
European Respiratory Journal

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