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. 2021 Oct 5:15:2267-2278.
doi: 10.2147/PPA.S330225. eCollection 2021.

Development and Psychometric Testing of the Supportive Care Needs Scale for Patients with Tuberculosis (SCN-TB)

Jing Ren  1 , Dongfang Han  2 , Jingjun Zhang  1 , Yingli Wang  3 , Qiaoqiao Huang  4 , Tian Tian  1 , Xiaomei Li  1
Affiliations

Development and Psychometric Testing of the Supportive Care Needs Scale for Patients with Tuberculosis (SCN-TB)

Jing Ren et al. Patient Prefer Adherence. .

Abstract

Purpose: Patients affected by tuberculosis have diverse unmet supportive care needs (SCN) that may seriously affect their treatment adherence. Accurately assessing patients' SCN is important for providing efficient patient-centred care, but few instruments are suitable for use in clinical practice. Therefore, the purpose of this study was to develop an SCN scale for patients with tuberculosis (SCN-TB) and to evaluate its psychometrical properties.

Patients and methods: Based on the SCN framework, the SCN-TB was designed via a literature review, Delphi consultation and pilot study. Then, 550 patients from four tuberculosis specialist hospitals in Shaanxi Province were enrolled by convenience sampling to further test the validity and reliability of the SCN-TB.

Results: A total of 518 patients completed the survey. The final scale encompasses 25 items in five domains: physical, practical, psycho-emotional, social, and informational. The content validity for the scale was 0.93, with that for each item ranging from 0.80 to 1.00. Five factors that explained 80.38% of the variance were identified in exploratory factor analysis. A five-factor model was then confirmed with confirmatory factor analysis using maximum likelihood estimation with bootstrapping. The model fit indices were χ 2/df=1.062 (Bollen-Stine χ 2=281.382, df=265, p<0.001), CFI=0.997, RMSEA=0.016, SRMR=0.053, NFI=0.951, and GFI=0.929. All factors had acceptable convergent and discriminant validity. The Cronbach's α, split-half, and test-retest reliability coefficients of the scale were 0.884, 0.883, and 0.854, respectively.

Conclusion: The SCN-TB is a valid and reliable theory based tool for assessing the needs of patients with tuberculosis and can be applied in both clinical practice and research.

Keywords: needs assessment; patient-centered care; quality of healthcare; supportive care; tuberculosis.

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Conflict of interest statement

The authors declared that no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1
Figure 1
Scree plot of principal component factor analysis (N1=259).
Figure 2
Figure 2
The bootstrapped standardized path diagram of the CFA model (N2=259).
See this image and copyright information in PMC

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Grants and funding

This work was supported by the China Medical Board (CMB) program [11-085].