Development of a questionnaire on supportive care needs of patients with COPD combined with respiratory failure on noninvasive ventilators and evaluating its reliability and validity.

OBJECTIVE

To develop a supportive care needs questionnaire for patients with COPD and respiratory failure who are on a noninvasive ventilator, and to test its reliability and validity.

METHODS

The questionnaire was based on the short form of the Supportive Care Needs Scale. Its dimensions and items were formulated through literature analysis, semi-structured interviews, the Delphi method, and group discussions, resulting in the initial draft. The reliability and validity of the questionnaire were then evaluated.

RESULTS

The authority coefficients from two rounds of expert consultation were 0.875 and 0.888, with entry variation coefficients ranging from 0.05 to 0.42 and 0.05-0.21. Kendall's W-values were 0.551 and 0.487 (P < 0.05). Exploratory factor analysis identified five factors with 32 items, explaining 82.523 % of the variance. The content validity index S-CVI/Ave was 0.92, while S-CVI was 0.91. The total Cronbach's alpha coefficient was 0.982, with individual dimensions ranging from 0.924 to 0.976, and a test-retest reliability coefficient of 0.912.

CONCLUSION

The developed questionnaire for assessing supportive care needs in COPD patients with respiratory failure using noninvasive ventilation demonstrates good reliability and validity, making it a suitable assessment tool.