Development and validation of a Cancer Patient Suicidal Ideation Scale

Abstract

Aim: To develop a Cancer Patient Suicidal Ideation Scale (CAPASIS) and test its reliability and validity. Patients & methods: An initial CAPASIS was developed. Clinical assessment was conducted using an adjusted initial scale with 239 cancer patients for item reduction and 253 for scale validation. Results: Item selection analyses resulted in 22 items. The revised model fits were acceptable (normal chi-square [χ²/df] = 1.919; standardized root mean residual = 0.057; root mean square error of approximation = 0.060; goodness fit index = 0.882; adjusted goodness fit index [AGFI] = 0.844; Tucker–Lewis index = 0.898; comparative fit index = 0.915; incremental fit index = 0.917). The Cronbach’s alpha coefficient was 0.911. Conclusion: The CAPASIS has good validity and reliability, with a six-factor structure of ‘entrapment’, ‘defeat’, ‘isolation’, ‘hopelessness’, ‘burdensomeness’ and ‘humiliation’, which can help identify patients with suicidal ideation.

Keywords::

• cancer patient
• reliability
• scale
• suicidal ideation
• validity

Supplementary data

To view the supplementary data that accompany this paper please visit the journal website at: www.tandfonline.com/doi/suppl/10.2217/fon-2022-1077

Financial & competing interests disclosure

This study was supported by the Humanities and Social Sciences of the Ministry of Education Planning Fund (project number: 20YJAZH007). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

No writing assistance was utilized in the production of this manuscript.

Ethical conduct of research

The authors state that they have obtained appropriate institutional review board approval or have followed the principles outlined in the Declaration of Helsinki for all human or animal experimental investigations. In addition, for investigations involving human subjects, informed consent has been obtained from the participants involved.

Additional information

Funding

This study was supported by the Humanities and Social Sciences of the Ministry of Education Planning Fund (project number: 20YJAZH007). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.