Association Between Abdominal Obesity and Asthma: a Meta-analysis

Overview

Journal Allergy Asthma Clin Immunol

Specialty Allergy & Immunology

Date 2019 Apr 6

PMID 30949213

Citations 28

Authors

Di Jiang

Liwen Wang

Chenxiao Bai

Ou Chen

Affiliations

Soon will be listed here.

Abstract

Background: Studies evaluating the association between abdominal obesity and asthma yielded conflict results. Whether abdominal obesity is positively associated with asthma remains unclear.

Objective: To quantitatively determine the association between abdominal obesity and asthma.

Methods: Databases including PubMed, Web of Science, China National Knowledge Infrastructure, China Biology Medicine disc, Chinese Scientific and Technological Journal Database and Wanfang Data were searched up to February 2018 to collect all relevant studies. Reference lists of related articles were also checked. After study selection and data extraction, meta-analysis was conducted to calculate the pooled odds ratio (OR) and corresponding 95% confidence interval (CI). Subgroup analyses by study design and age groups of participants were further performed. Publication bias was assessed via Begg's rank correlation and Egger's linear regression methods.

Results: A total of 13 studies were included in the final meta-analysis, including 2 case-control studies, 6 cohort studies, and 5 cross-sectional studies. Our meta-analysis observed a positive association between abdominal obesity and asthma (OR = 1.47, 95% CI 1.35-1.59). No evidence of heterogeneity (I = 10.7%) or publication bias (Begg's test P = 0.200, Egger's test P = 0.146) was found. Subgroup analyses by study design and age groups of participants obtained consistently positive results across subgroups. Moreover, our meta-analysis observed similar results when considering this association separately in males and females (Males: OR = 1.37, 95% CI 1.18-1.58; Females: OR = 1.39, 95% CI 1.22-1.58). In addition, the association between abdominal overweight and asthma was further explored in this meta-analysis and the pooled OR and 95% CI was 1.13 (1.03, 1.24), indicating that there is a dose-response relationship between abdominal weight status and asthma.

Conclusions: Our meta-analysis shows a positive association between abdominal obesity and asthma. Moreover, this association is similar in males and females. In addition, our meta-analysis indicates that there is a dose-response relationship between abdominal weight status and asthma. Therefore, addressing abdominal obesity issue is of great importance. More studies are needed in the future to clarify the association between abdominal obesity and asthma.

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