Computational protocol: Dialectal influence on chronic pulmonary disease assessment test: the reliability and validity study

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Protocol publication

[…] The reliability and validity of the two CAT versions were evaluated in this study. The former was estimated by measuring the internal consistency and test–retest reliability of the questionnaires. Internal consistency measured the degree of association between the questionnaire items whereas test–retest reliability measured the ability of the questionnaire to produce consistent scores over a short period in stable subjects. The internal consistency of the 8-item questionnaire was measured by applying Cronbach’s alpha coefficient to CAT scores, with values >0.7 considered acceptable for aggregate data. The reproducibility (test–retest reliability) of the questionnaire was estimated by calculating the intraclass correlation coefficient (ICCC) for CAT between two stable visits. The validation process involved comparing these with SGRQ using Pear-son’s correlation. The correlations between CAT scores with the other clinical parameters (mMRC, FEV1, and 6-MWD) were also analyzed by the same method. We used the following cut-offs: 0<| r |<0.3, weak correlation; 0.3<| r |<0.7, moderate correlation; and | r |>0.7, strong correlation. Student’s t-test was used to compare the groups. Differences in proportions were analyzed using χ2 tests. Statistical significance was accepted at P<0.05 and summary results were presented as mean ± SD or N (%). All analyses were carried out with the SPSS statistical package, version 16 for Windows. […]

Pipeline specifications

Software tools PEAR, SPSS
Application Miscellaneous
Organisms Homo sapiens
Diseases Lung Diseases, Pulmonary Disease, Chronic Obstructive