Data related to the estimation of the weight of dimensions and items of EHFScBS by FAHP algorithm & HF self-care
A hierarchical structure was organized to measure the dimensions of the Heart Failure Self-care Behavior Scale (EHFScBS) as criteria and the items of each dimension as sub-criteria. At first, several experts judged pairwise comparisons matrix using a linguistic scale and then consistent judgments were converted into triangular fuzzy numbers (TFNs). The group opinions were fused and the final fuzzy weight of the criteria and sub-criteria was calculated. Defuzzification of the final fuzzy weight was performed by converting fuzzy data into crisp scores (CFCS). Totally, 80 patients with HF at Imam Ali Cardiovascular Hospital in Kermanshah, Iran were selected through convenience sampling method. Participation criteria were cardiac dysfunction recorded in echocardiographic report, functional classes III and IV based on New York Heart Association (NYHA), ejection fraction ≤ 40%, a diagnosis of HF at least six months, age range 18 to 65 years, literacy to read and write Persian language. The exclusion criteria were suffering a co-existing, severe, chronic debilitating disease, having a psychiatric diagnosis or auditory and visual impairment, having a private nurse or specialized education about self-care, having a valve replacement in the last six months or expecting to have such a treatment within three months, and reluctance to participate. At the time of registration, the clinical data of patients were collected from their medical information chart. This information included: patient’s medical history, laboratory information, co-morbidities, NYHA classification, left ventricular ejection fraction, and prescribed medication. At the same time, the patients were interviewed to collect HF self-care data. The EHFScBS-9 was used to assess self-care in patients with HF. In this study, to compare and better understand the data, the self-care behavior score was converted into 0-100, so that higher scores were a sign of better self-care. For the standardized 0-100 score, we performed the following sequence: 1. The scores on the 5-point Likert scale were changed (completely agree = 5, agree = 4, no difference = 3, disagree = 2, completely disagree = 1). 2. The total score of each option in the Likert scale was calculated, subtracted from 9, and multiplied by 2.7777. Therefore, the patient's self-care score was calculated in a range of 0-100 by EHFScBS-9. On the other hand, the importance coefficients of each item, calculated by the FAHP method, was applied and the MEHFScBS-9 (Modeled EHFScBS-9) was obtained. In this case, for each point on the Likert scale, the coefficient of importance of the corresponding item was multiplied. Then, the total score of each option in the Likert scale was calculated, subtracted from 0.3888, and multiplied by 64.2874. In this way, the measurement was performed by both instruments (EHFScBS-9 and MEHFScBS-9) in the range of 0-100, which increases the accuracy and understanding in comparing the results of these methods.