ArticleNPJ primary care respiratory medicine2014
COPD Diagnostic Questionnaire (CDQ) for selecting at-risk patients for spirometry: a cross-sectional study in Australian general practice.
Article in NPJ primary care respiratory medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.
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Who cites it
26 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Economic evaluations of screening and case-finding for Chronic Obstructive Pulmonary Disease (COPD): a systematic review.NPJ primary care respiratory medicine · 2026Pooled it
- Performance of alternative COPD case-finding tools: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2021Pooled it
- Designing a Digital Twin for the Management of Noncommunicable Diseases: Protocol for a Pilot Study and Methodology Validation.JMIR research protocols · 2026Article
- 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.BMC pulmonary medicine · 2026Article
- Performance study of a new diagnostic questionnaire for (Chronic obstructive pulmonary -disease) COPD with information on exposure to wood smoke, COPD-WS.Multidisciplinary respiratory medicine · 2025Article
- A Two-Staged, Risk-Stratified Strategy Combining FEVRespirology (Carlton, Vic.) · 2025Observational
- CAD-Q (COPD-Asthma Differentiation Questionnaire): Performance of a new diagnostic score to differentiate between COPD and asthma in adults.BMC pulmonary medicine · 2025Article
- The West Dallas environmental health project: the importance of community health experiences related to air pollution.Frontiers in public health · 2025Article
- Development of a web application to evaluate spirometric curve and clinical variables to support COPD diagnosis in primary care.Biomedica : revista del Instituto Nacional de Salud · 2024Article
- Early Diagnosis and Treatment of Chronic Obstructive Pulmonary Disease: The Costs and Benefits of Case Finding.American journal of respiratory and critical care medicine · 2024Article
- mTert induction in p21-positive cells counteracts capillary rarefaction and pulmonary emphysema.EMBO reports · 2024Article
- Assessment of Five Questionnaires for Chronic Obstructive Pulmonary Disease in a Southern Italian Population: A Proof-of-Concept Study.Medicina (Kaunas, Lithuania) · 2023Article
- The Role of Pulmonary Function Testing in the Diagnosis and Management of COPD.Respiratory care · 2023Review
- Current Progress of COPD Early Detection: Key Points and Novel Strategies.International journal of chronic obstructive pulmonary disease · 2023Review
- Accuracy and economic evaluation of screening tests for undiagnosed COPD among hypertensive individuals in Brazil.NPJ primary care respiratory medicine · 2022Article
- Accuracy of the COPD diagnostic questionnaire as a screening tool in primary care.BMC primary care · 2022Article
- PUMA screening tool to detect COPD in high-risk patients in Chinese primary care-A validation study.PloS one · 2022Article
- Sex Differences in the International Primary Care Airways Group Questionnaire for Screening of Chronic Obstructive Pulmonary Disease: A Retrospective, Cross-Sectional Study.International journal of chronic obstructive pulmonary disease · 2022Article
- Article
- Factors Associated with Chronic Obstructive Pulmonary Diseases in Nepal: Evidence from a Nationally Representative Population-Based Study.International journal of chronic obstructive pulmonary disease · 2021Article
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5 authors.
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Abstract
backgroundUsing the COPD Diagnostic Questionnaire (CDQ) as a selection tool for spirometry could potentially improve the efficiency and accuracy of chronic obstructive pulmonary disease (COPD) diagnosis in at-risk patients.
aimTo identify an optimal single cut point for the CDQ that divides primary care patients into low or high likelihood of COPD, with the latter group undergoing spirometry.
methodsFormer or current smokers aged 40-85 years with no prior COPD diagnosis were invited to a case-finding appointment with the practice nurse at various general practices in Sydney, Australia. The CDQ was collected and pre- and post-bronchodilator spirometry was performed. Cases with complete CDQ data and spirometry meeting quality standards were analysed (1,054 out of 1,631 patients). CDQ cut points were selected from a receiver operating characteristic (ROC) curve.
resultsThe area under the ROC curve was 0.713. A cut point of 19.5 had the optimal combination of sensitivity (63%) and specificity (70%) with two-thirds below this cut point. A cut point of 14.5 corresponded to a sensitivity of 91%, specificity of 35% and negative predictive value of 96%, and 31% of patients below this cut point.
conclusionsThe CDQ can be used to select patients at risk of COPD for spirometry using one cut point. We consider two possible cut points. The 19.5 cut point excludes a higher proportion of patients from undergoing spirometry with the trade-off of more false negatives. The 14.5 cut point has a high sensitivity and negative predictive value, includes more potential COPD cases but has a higher rate of false positives.
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