Development of the 8-Item Phlegm Pattern Questionnaire (PPQ-8) Using Rasch Analysis
The 25-item Phlegm Pattern Questionnaire (PPQ) has been widely used to examine the relationship between the phlegm pattern (PP), quality of life, tongue colour, vocal qualities, and dysfunctional breathing. However, the concerns of response burden and differences in the respondent’s abilities or ite...
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| Formato: | article |
| Lenguaje: | EN |
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Hindawi Limited
2021
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| Acceso en línea: | https://doaj.org/article/b17d452fe35240238e2bfa3c113528ec |
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