| Health survey | US norm* | Baseline n=99 | Time-point | p Value† | ||
| 30 days n=90 | 6 months n=70 | 12 months n=55 | ||||
| PCS | 37.3±3 | 29.5±9 | 36.4±9 | 38.3±11 | 35.8±10 | 0.002 |
| MCS | 51±3 | 45±12 | 46.4±13 | 47.4±11 | 45.2±11 | 0.45 |
| EQ-5D | 0.66±0.2 | 0.54±0.3 | 0.65±0.3 | 0.68±0.3 | 0.59±0.3 | 0.02 |
| VAS | 0.53±7 | 51.1±21 | 61.4±21 | 68.2±20 | 56.2±28 | 0.01 |
| SF-6D | 0.72±0.1 | 0.60±0.1 | 0.66±0.1 | 0.68±0.1 | 0.62±0.1 | 0.048 |
Values are mean±SD.
↵* US Norms are reported for a US population stratified by age (80–89 years).
↵† p Values are reported for a change in health and were calculated by repeated measures ANOVA. Numbers reflect the patients who completed the 4 time-points questionnaires entered into the analysis.
PCS, physical component score; MCS, mental component score; VAS, visual analogue score.