to.html">strat_amato</a>": A method based on stratification and weighting by Amato (1988).</p></li>
<li><p>"<a href="surv_strat_gregory_nieto.html">strat_gregory_nieto</a>": A method based on stratification and weighting by Gregory (1988) and Nieto &amp; Coresh (1996).</p></li>
<li><p>"<a href="surv_strat_cupples.html">strat_cupples</a>": A method based on stratification and weighting by Cupples et al. (1995).</p></li>
<li><p>"<a href="surv_km.html">km</a>": A simple stratified Kaplan-Meier estimator withou