Analysis of the Validity and Reliability of the European Heart Failure Self-Care Behaviors Scale

Monday, 22 July 2013

Neriman Zengin, PhD
Midwifery Departments of Health Sciences Faculty, Istanbul University, Istanbul, Turkey
Besey Ören, PhD
Midwifery Departments of Health Science Faculty, Istanbul University, Istanbul, Turkey
Ayse Cil Akinci, PhD
School of Nursing, Kirklareli University, Kırklareli, Turkey
Hicran Yildiz, PhD
School of Nursing, Uludag University, Bursa, Turkey

Learning Objective 1: Heart Failure Self-Care Behaviors

Learning Objective 2: Analysis of the Validity and Reliability

Purpose:  The present study aims to yield a valid and reliable scale which nurses can use in their research and clinic to measure their patients' self-care status and analyze the reliability and validity of European Heart Failure Self-Care Behavior Scale (EHFScBs).  

Methods:  The universe comprised cases who were at the cardiology clinic of a university hospital in 2009-2012 and who were diagnosed with HF at least six months earlier. As for the sample, it comprised 120 cases whose HF functional classes were II, III and V according to New York Heart Association. As data collection instrument, a demographic information questionnaire and EHFScBs were used. The scale's reliability was measured by  internal consistency andtest-retest while its validity was analyzed by means of confirmatory factor analysis (CFA). In the CFA analysis, the value obtained by dividing the chi-square value to the degree of freedom (x²/df), Goodness of Fit Index (GFI), Comparative Fit Index (CFI) and Root Mean Square Error of Approximation Residual (RMSEA) and the Square root of Standardized Errors' Mean Squares (S-RMR) values were expected to be within acceptable borders.  

Results:  The mean ages of the cases were 64.5±12.4 and the mean disorder duration was 9.06±8.19 years. In the reliability analysis, it was observed that the Cronbach's alpha coefficient was 0.88, item total correlation varied between 0.28 and 0.73 and test-retest correlation coefficient varied between 0.49 and 0.90. It was also observed that the scale's single-factor model had CFA x²/df= 62.49/51, GFI=0.92, CFI=0.98, RMSEA=0.04, SRMR= 0.05, which exceeded the acceptable values. In addition, each item's factor load varied between 0.30 and 0.79. 

Conclusion: It was found out that the scale is valid and reliable for HF patients in Turkey . In conclusion, HF can be used by nurses in both their research and patient evaluation in the clinic.