| nct_sample_size | Main trial sample size using the non-central t-distribution |
| optimized_nct_sample_size | Optimize pilot sample size using the non-central t-distribution |
| optimized_ucl_sample_size | Optimized pilot sample size using the UCL method |
| plot.sspilot | Plot pilot and main-trial sample size relationship |
| standard_sample_size | Standard sample size for a two-arm continuous outcome trial |
| ucl_sample_size | Main trial sample size using the upper confidence limit method |