Comparing the accuracy of CDQ, CAPTURE, LFQ, COPD-PS, COPD-SQ and SCSQ questionnaires for COPD screening in a hospital-facilitated community screening Iranian population

The LFQ, SCSQ, and COPD-PS questionnaires demonstrated the highest diagnostic accuracy for COPD screening in this hospital-facilitated community screening cohort. Their high sensitivity shows potential as effective "rule-out" instruments for identifying high-risk individuals in primary care settings who should be referred for confirmatory spirometry. Future validation in a pure primary care setting is recommended.