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. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: Thorax. 2013 Aug 12;69(1):55–62. doi: 10.1136/thoraxjnl-2013-203631

Adjusted OR (95% confidence interval) for respiratory symptoms among participants who had restrictive-pattern, stratified by effect modifier — sex (Panel A) and smoking history (Panel B). Separate logistic regression models were used for each ethnic group and effect modifier combination, with normal spirometry as the reference group. Covariates included age, sex, smoking history, high CV risk, and reduced health status, without the variable that was the effect modifier of interest.

Abbreviations: CI, confidence interval; CV, cardiovascular; OR, odds ratio.

Adjusted OR (95% confidence interval) for respiratory symptoms among participants who had restrictive-pattern, stratified by effect modifier — sex (Panel A) and smoking history (Panel B). Separate logistic regression models were used for each ethnic group and effect modifier combination, with normal spirometry as the reference group. Covariates included age, sex, smoking history, high CV risk, and reduced health status, without the variable that was the effect modifier of interest.

Abbreviations: CI, confidence interval; CV, cardiovascular; OR, odds ratio.