Asian Nurs Res.  2015 Dec;9(4):312-317. 10.1016/j.anr.2015.09.001.

Development and Preliminary Evaluation of Psychometric Properties of Symptom-Management Self-Efficacy Scale for Breast Cancer Related to Chemotherapy

• Liang SY
• Wu WW
• Kuo CY
• Lu YY

• KMID: 2363352
• DOI: http://doi.org/10.1016/j.anr.2015.09.001

Abstract

PURPOSE
The purpose of this study was to develop and preliminarily evaluate the reliability and validity of the Symptom-Management Self-Efficacy ScaleeBreast Cancer (SMSES-BC) related to chemotherapy.
METHODS
The study included three stages. This paper presents the results of stage 2 and stage 3. In total, 34 items in the SMSES-BC were found during stage 1 from qualitative findings, a literature review, and expert suggestions; the 34 items were used for the psychometric properties test. Test-retest reliability and Cronbach alpha were assessed in the first sample, which included 45 participants for the pilot test (stage 2). The second sample, which included 152 patients, was used to assess the construct validity and concurrent validity (stage 3).
RESULTS
The pilot test results revealed a test-retest reliability of .73 (p < .001) and Cronbach alpha coefficient of .96 for the total scale. Three factors (managing chemotherapy-related symptoms, acquiring problem solving, and managing emotional and interpersonal disturbances) were identified from exploratory factor analysis. Correlation coefficient r was .40 (p < .001), which supported the association between SMSES-BC and the General Self-Efficacy Scale for concurrent validity.
CONCLUSIONS
The study results demonstrate acceptable reliability and validity for the SMSES-BC that was developed for measuring symptom-management self-efficacy related to chemotherapy for patients with breast cancer. This study suggests further research to validate the construct of the SMSES-BC.

Keyword

drug therapy; neoplasms; self care; self efficacy; signs and symptoms

MeSH Terms

Adult
Aged
Antineoplastic Agents/*therapeutic use
Breast Neoplasms/*drug therapy/*psychology
Drug Therapy/*psychology
Factor Analysis, Statistical
Female
Humans
Middle Aged
Patients/*psychology
Pilot Projects
Psychometrics
Reproducibility of Results
Self Care/*psychology
Self Efficacy
Surveys and Questionnaires
Taiwan
Antineoplastic Agents