| ahr | Average hazard ratio under non-proportional hazards |
| ahr_blinded | Blinded estimation of average hazard ratio |
| as_gt | Convert summary table of a fixed or group sequential design... |
| as_rtf | Write summary table of a fixed or group sequential design... |
| define_enroll_rate | Define enrollment rate |
| define_fail_rate | Define failure rate |
| event_diff | Considering the enrollment rate, failure rate, and... |
| expected_accrual | Piecewise constant expected accrual |
| expected_event | Expected events observed under piecewise exponential model |
| expected_time | Predict time at which a targeted event count is achieved |
| fastlag | Find the "previous" values in a vector |
| fixed_design | Fixed design under non-proportional hazards |
| get_combo_power | Function to calculate power |
| gs_b | Default boundary generation |
| gs_create_arm | Create npsurvSS arm object |
| gsDesign2-package | gsDesign2: Group Sequential Design with Non-Constant Effect |
| gs_design_ahr | Group sequential design using average hazard ratio under... |
| gs_design_combo | Group sequential design using MaxCombo test under... |
| gs_design_npe | Group sequential design computation with non-constant effect... |
| gs_design_rd | Group sequential design of binary outcome measuring in risk... |
| gs_design_wlr | Group sequential design using weighted log-rank test under... |
| gs_info_ahr | Information and effect size based on AHR approximation |
| gs_info_combo | Information and effect size for MaxCombo test |
| gs_info_rd | Information and effect size under risk difference |
| gs_info_wlr | Information and effect size for weighted log-rank test |
| gs_power_ahr | Group sequential design power using average hazard ratio... |
| gs_power_combo | Group sequential design power using MaxCombo test under... |
| gs_power_npe | Group sequential bound computation with non-constant effect |
| gs_power_rd | Group sequential design power of binary outcome measuring in... |
| gs_power_wlr | Group sequential design power using weighted log rank test... |
| gs_spending_bound | Derive spending bound for group sequential boundary |
| gs_spending_combo | Derive spending bound for MaxCombo group sequential boundary |
| gs_update_ahr | Group sequential design using average hazard ratio under... |
| ppwe | Piecewise exponential cumulative distribution function |
| pw_info | Average hazard ratio under non-proportional hazards |
| s2pwe | Approximate survival distribution with piecewise exponential... |
| summary | Summary for fixed design or group sequential design objects |
| to_integer | Round sample size and events |
| wlr_weight | Weight functions for weighted log-rank test |
