| CoxBcv.fg | Fay and Graubard (FG) bias-corrected sandwich variance estimator |
| CoxBcv.fgmr | Hybrid FGMR bias-corrected sandwich variance estimator |
| CoxBcv.kc | Kauermann and Carroll (KC) bias-corrected sandwich variance estimator |
| CoxBcv.kcmr | Hybrid KCMR bias-corrected sandwich variance estimator |
| CoxBcv.mbn | Morel, Bokossa, and Neerchal (MBN) bias-corrected sandwich variance estimator |
| CoxBcv.mbnmr | Hybrid MBNMR bias-corrected sandwich variance estimator |
| CoxBcv.md | Mancl and DeRouen (MD) bias-corrected sandwich variance estimator |
| CoxBcv.mdmr | Hybrid MDMR bias-corrected sandwich variance estimator |
| CoxBcv.mr | Martingale residual (MR) bias-corrected sandwich variance estimator |
| CoxBcv.rob | Uncorrected robust sandwich variance estimator |