Correlations between TFI score and age, years in education, patient income, duration of illness, number of hospitalizations, and NYHA class were analyzed using Spearman’s rho. Table 4 shows the correlation coefficients from these analyses.
The correlation analyses showed that total frailty and each of its components (physical, psychological, social) increased with advancing patient age. The analyses showed also that the total frailty score and the physical compo-nents score decreased as the number of years in education increased. The total frailty score, as well as the physical and social component scores, increased with duration of illness. Patients who were hospitalized more frequently had higher scores in the total frailty and social frailty components. The total frailty score, as well as the physical and psychological component scores, increased with NYHA class. Finally, the correlation analyses showed no statistically significant relationship between the total frailty score, its components, and patient income.