Development and psychometric evaluation of a questionnaire for assessing self-management behaviors in stroke survivors

OBJECTIVES: To develop and examine the psychometric properties of the Stroke Self-management Behaviors Performance Scale (SSBPS). MATERIALS AND METHODS: This is a cross-sectional descriptive correlational study. An 11-item SSBPS was developed. Its content validity was reviewed by an expert panel, and it was piloted among six stroke survivors. Participants completed the SSBPS and four additional measures, namely Stroke Self-Efficacy Questionnaire, Stroke Specific Quality of Life Scale, Geriatric Depression Scale and Reintegration to Normal Living Index, at baseline and the SSBPS again after four weeks. Principal component factor analysis was performed to examine the factor structure. Internal consistency, convergent validity and test-test reliability were evaluated. RESULTS: 128 stroke survivors completed the SSBPS and additional measures. Thirty-four of them completed the SSBPS again after four weeks. A two-factor structure of "Psychosocial management" and "Medical management" consisting of nine items was identified and accounted for 62% of the total variance. The SSBPS had acceptable internal consistency (Cronbach's alpha=0.65-0.88) and test-retest reliability (Intra-class correlation coefficient=0.57-0.73). The SSBPS total score was significantly correlated with the Stroke Self-Efficacy Questionnaire total (r=0.63, p<0.01), Reintegration to Normal Living Index total and subscales (r=0.60-0.69, p<0.01), Stroke Specific Quality of Life Scale total and all domains (r=0.19-0.61, p<0.05), and Geriatric Depression Scale total (r=-0.50, p<0.01) scores. CONCLUSIONS: The desirable psychometric properties of the SSBPS provide evidence that the scale may be reliable and valid for assessing stroke survivors' performance of self-management behaviors. It would inform the development of effective strategies to promote positive self-management behavioral performance for optimal recovery.