Questionnaire investigations among normal, PRISM, and COPD participants The questionnaire scores of the participants included were statistically analyzed, as shown in Fig. 2. Significant differences in COPD-SQ, COPD-PS, and CAT scores were found among three groups of participants. According to the re...
To assess the relationship between gas trapping and NSBHR, we conducted a retrospective chart review of 500 patients who had undergone pulmonary function testing, including lung volume measurement and methacholine challenge. Measurements of airflow, lung volumes, and methacholine PC20 values were ...