Table 3 Reliability of the quality of life instrument QLICD-CHD (n = 146 for α, n = 50 for r and ICC)
Domains/Facets | Internal consistency coefficient α | Test-retest reliability correlation coefficient r | Test-retest reliability ICC (95% CI ) |
|---|---|---|---|
Physical domain (PHD) | 0.76 | 0.95 | 0.95 (0.91-0.97) |
Independence | 0.70 | 0.98 | 0.98 (0.97-0.99) |
Appetite and sleep | 0.46 | 0.77 | 0.77 (0.62-0.86) |
Physical Symptoms | 0.67 | 0.97 | 0.98 (0.96-0.99) |
Psychological domain (PSD) | 0.90 | 0.92 | 0.92 (0.86-0.95) |
Cognition | 0.73 | 0.92 | 0.92 (0.87-0.96) |
Anxiety | 0.81 | 0.85 | 0.84 (0.74-0.91) |
Depression | 0.84 | 0.93 | 0.93 (0.88-0.96) |
Self-consciousness | 0.76 | 0.91 | 0.91 (0.84-0.95) |
Social domain (SOD) | 0.63 | 0.86 | 0.85 (0.75-0.91) |
Social Support/Security | 0.74 | 0.84 | 0.83 (0.71-0.90) |
Social Effects | 0.75 | 0.92 | 0.91 (0.85-0.95) |
Sexual function | - | 0.94 | 0.96 (0.94-0.98) |
Sub-total (QLICD-GM) | - | 0.92 | 0.92 (0.86-0.95) |
Specific domain (SPD) | 0.79 | 0.80 | 0.80 (0.68-0.88) |
Symptom | 0.78 | 0.70 | 0.72 (0.54-0.73) |
Effect of medicine | - | 0.61 | 0.61 (0.40-0.76) |
Effect on mental health and daily life | 0.65 | 0.89 | 0.92 (0.86-0.95) |
Total (TOT) | - | 0.90 | 0.91 (0.84-0.95) |