Power to detect a statistically significant between-group difference in LE along various assumptions (n=274 per group; alpha=0.05; two sided)
| Difference in LE (years) | SD of LE (years) | Power (%) |
| 1 | 4 | 83 |
| 1 | 8 | 31 |
| 2 | 4 | >99 |
| 2 | 8 | 83 |
| 3 | 4 | >99 |
| 3 | 8 | >99 |
The relatively high power in most scenarios indicates that the sample size is adequate to address the research question.
LE, life expectancy.