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Handheld flow meter improves COPD screening despite questionnaire use

31 Jan 2020

Use of the handheld flow meter (HFM), regardless of using a symptom-based questionnaire, proves beneficial in detecting chronic obstructive pulmonary disease (COPD), a recent study has shown.

The investigators sought to identify the benefit of utilizing an HFM in COPD screening among 2,008 participants aged 40 years from Isumi City, Japan. They developed two novel point systems for detecting COPD: one incorporated score of HFM alone (sHFM) and the other incorporated the score of International Primary Care Airway Group questionnaire (IPAG) and HFM (sIPAG + HFM).

Random sample allocation (split-sample validation) was conducted to validate the predictive performance of these models. To perform the split-sample validation, participants were assigned to either of the following data set: model creation (n=1,007) or model assessment (n=1,001).

In decision curve analysis, sHFM and sIPAG + HFM both had significantly higher net benefit and specificity than that of the sIPAG. However, the curves of sHFM and sIPAG + HFM were crossing and practically the same with no significant difference in sensitivity and specificity.

“This study confirms that HFM is significantly advantageous in detecting COPD despite the use of a conventional questionnaire,” the investigators said.

These findings are consistent with those of a 2011 study, which suggested that using both the IPAG questionnaire and the handheld PiKo-6 spirometer can increase the possibility of an early and accurate diagnosis of COPD in the primary care setting. [Prim Care Respir J 2011;20:184-189]

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Most Read Articles
Pearl Toh, 31 Dec 2019
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