4,565
Views
0
CrossRef citations to date
0
Altmetric
Research Articles

Development and Validation of a Screening Questionnaire of COPD from a Large Epidemiological Study in China

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ORCID Icon, , ORCID Icon, , & show all
Pages 118-124 | Received 29 Nov 2021, Accepted 10 Feb 2022, Published online: 06 Apr 2022

Figures & data

Figure 1. Flowchart of involving subjects. Abbreciation: COPD, chronic obstructive pulmonary disease.

Figure 1. Flowchart of involving subjects. Abbreciation: COPD, chronic obstructive pulmonary disease.

Table 1. Comparison of characteristics between development and validation dataset.

Table 2. Results of logistic regression and scores in development set.

Figure 2. Distribution of clusters of questions in the screening questionnair among different range of score in development dataset. BMI, body-mass index.

Figure 2. Distribution of clusters of questions in the screening questionnair among different range of score in development dataset. BMI, body-mass index.

Figure 3. ROC for screening questionnaire in development set (A. AUC = 0.7737) and validation set (B. AUC = 0.7711). Abbreviation: AUC, area under curve.

Figure 3. ROC for screening questionnaire in development set (A. AUC = 0.7737) and validation set (B. AUC = 0.7711). Abbreviation: AUC, area under curve.

Table 3. Accuracy, Positive and negative predictive values for COPD across different score thresholds.

Figure 4. Individual COPD probability regarding the screening questionnaire score within 95% confidence intervals. Curved blue area representitive the 95% confidence intervals for predicted COPD probability at each score level. Abbreciation: COPD, chronic obstructive pulmonary disease.

Figure 4. Individual COPD probability regarding the screening questionnaire score within 95% confidence intervals. Curved blue area representitive the 95% confidence intervals for predicted COPD probability at each score level. Abbreciation: COPD, chronic obstructive pulmonary disease.

Data availability statement

Enquiries for data generated or analyzed during this study can be directed to the corresponding author.