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Effect of the Interaction between Emphysema and the Presence of Interstitial Features on Mortality
Note.—Interstitial features were defined as present if more than 10% of the lung was occupied by interstitial features. All analyses were adjusted for age, sex, race, clinical center, current smoking status, number of pack-years smoked, body mass index, percentage predicted forced expiratory volume in 1 second, and coronary calcium score. CI = confidence interval.
