Table 4.
Italian HeartQoL floor and ceiling effects and internal consistency reliability (Cronbach’s alpha) in the total cohort and in patients with angina (AP), myocardial infarction (MI), or ischemic heart failure (IHF)
| HeartQoL | Total cohort (N = 472) |
AP (N = 183; 38.8%) |
MI (N = 167; 35.4%) |
IHF (N = 122; 25.8%) |
|---|---|---|---|---|
| Global scale | ||||
| Floor effect | 0.4% | 1.0% | 0.6% | 1.0% |
| Ceiling effect | 4.7% | 3.8% | 7% | 2.50% |
| Cronbach’s alpha | 0.94 | 0.94 | 0.93 | 0.94 |
| Physical subscale | ||||
| Floor effect | 0.6% | 1.0% | 1.2% | 1.0% |
| Ceiling effect | 7.4% | 6.0% | 10.8% | 4.90% |
| Cronbach’s alpha | 0.94 | 0.93 | 0.92 | 0.95 |
| Emotional subscale | ||||
| Floor effect | 1.7% | 1.0% | 0.6% | 1.6% |
| Ceiling effect | 16.5% | 14.8% | 22.2% | 11.5% |
| Cronbach’s alpha | 0.87 | 0.88 | 0.86 | 0.84 |
N number of patients;
Floor effect > 15% reporting poorest HRQL
Ceiling effect > 15% reporting highest HRQL