The purpose of this study is to obtain new knowledge regarding screening for COPD. This study will use a participant's cancer screening CT scans performed as part of routine health care among current and former smokers at risk for COPD to identify participants who have had a spirometry or will have a spirometry test as part of the study to verify COPD status.
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Determine whether a case finding approach using lung cancer screening CT scans can identify patients with COPD Participants with CT scans that indicate COPD
Timeframe: Baseline