Background
Providing integrated patient-centred care based on the patient’s needs has emerged as the first pillar of tuberculosis prevention and control strategies. However, a reliable and valid instrument is still lacking. Hence, the aim of this study was to develop and psychometrically test a new scale for assessing the supportive care needs of patients with pulmonary tuberculosis.
Methods
A methodological study involving item generation and psychometric evaluation was used. Based on the Supportive Care Needs Framework, the item-pool was drafted from a systematic review of the literature, expert consultations and feedback from a pilot study. A convenience sample of 518 patients was recruited from four hospitals in Shaan’xi Province from September 10, 2019, to January 20, 2020. Item reduction and scale validation were assessed for content validity, construct validity, Cronbach’s alpha coefficient, half-split reliability, and test-retest reliability.
Results
The final scale encompasses 25 items in five domains: practical, psycho-emotional, social, information and physical. The item level content validity index ranged from 0.80 to 1.00, and the scale level content validity was 0.925. Five factors that explained 80% of the total variance were also identified in exploratory factor analysis and confirmed in confirmatory factor analysis. The CFA model fit indices were x2/df = 2.229 (p < 0.001), GFI = 0.853, AGFI = 0.820, RMSEA = 0.069. All items had acceptable convergent and discriminant validity. Cronbach’s α coefficient, the split-half reliability coefficient and the test-retest reliability coefficient were 0.884, 0.883 and 0.854, respectively.
Conclusions
This newly developed scale demonstrated acceptable reliability and validity, and it could be used to assess the supportive care needs of pulmonary tuberculosis patients in clinical settings.