Analysis of reliability and validity of the Supportive Care Needs Questionnaire in Chinese patients with prostate cancer

Abstract

Objective To evaluate the reliability and validity of the Chinese version of the Supportive Care Needs Survey (SCNS-SF34) in patients with prostate cancer. Methods The Chinese version of SCNS-SF34 was translated and revised. The exploratory factor analysis was used to assess the structural validity of the tool, and the Cronbach α coefficient was used to evaluate the reliability of the scale. Results Two items of the Chinese version of SCNS-SF34 were deleted. Five factors were extracted by principal component analysis, including psychological, health systems and information, patient care and support, physical and daily living and sexuality needs. It was consistent with the structure of original scale. The cumulative variance contribution rate reached 70.500%. Except for item 17, the maximum load value was 0.4. The total Cronbach α coefficient of the questionnaire was 0.929, and the Cronbach α coefficient was 0.780-0.940. Conclusions The Chinese version of SCNS-SF34 has good psychometric properties and it can be used to assess the supportive care needs for patients with prostate cancer in China. Key words: Prostate neoplasms; Supportive care needs; Reliability and validity