ObjectiveTo evaluate the reliability,validity and feasibility of a patient-reported outcomes (PRO) scale in the subjects with respiratory failure. Methods364 patients with chronic respiratory failure and 97 healthy subjects were face-to-face interviewed by well-trained investigators,and the data of respiratory failure -PRO instrument were collected. The psychometric performance such as reliability,validity,responsiveness and clinical feasibility in the respiratory failure -PRO instrument was evaluated. ResultsThe Cronbach's alpha coefficient of the respiratory failure -PRO instrument and each dimension were greater than 0.7. Factor analysis showed that the instrument had good construct validity. The scores of each of the facets and total scores between the patients and the healthy subjects were different. The recovery rate and the efficient rate of the questionnaire were more than 95%,and the time required to complete a questionnaire was within 15 minutes,indicating that the scale had a high clinical feasibility. ConclusionThe respiratory failure -PRO instrument has good reliability,validity,responsiveness and clinical feasibility.
Objective To developapatient-reported outcomes scale of chronic obstructive pulmonary disease used for Chinese, thus offering tools for clinical efficacy assessment. Methods According to the development standard of International Patient-Reported Outcomes, the item pool was established and the preliminary scale was prepared. Then, 100 patients with chronic obstructive pulmonary disease and 50 healthy subjects were face-to-face interviewed with preliminary scale by well-trained investigators.Those copies were collected, surveys were analyzed and items were selected with 5 methods including measure of discrete tendency method, factor analysis, correlation coefficient method, Cronbach’s alpha coefficient method and item response Theory. Finally, the final scale was gained. Results The eventual scale contains 4 areas(physiological dimain, psychological dimension, social dimension, treatment), 11 dimensions(specific symptoms, general symptoms, individual, anxiety, depression, disease cognization, disease influence on social pctivity, social support, compliance, drug adverse reaction, satisfactory), and 52 items. Conclusion The ultimate scale coincides with the theoretical framework and reflects the connotation of the quality of life of patients with chronic obstructive pulmonary disease.