Table 1 Sample size calculation according to scenarios of benefit in terms of quality of life for patients
Parameter | Groups | Sample calculation | |
|---|---|---|---|
Control group | Intervention group | ||
Quality of life, mean (standard deviation) | 52.8 (10.9) | 63.1 (10.1) | Â |
Significance level | 1.0% | 1.0% | Â |
Power of test | 95.0% | 95.0% | Â |
N | 40 patients | 40 patients | Â |
N + 10% (in each group) | 44 patients | 44 patients | Â |
Ratio | 1:1 | 1:1 | Â |
Total | 44 | 44 | 88 |