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class="dropdown-title nav__item-link"><span class=""><span class="dropdown-title__text">Prism</span><span class="dropdown-title__triangle"><i class="wrapper-icon wrapper-icon-angle-down m-0"></i></span></span></span><span class="dropdown-body dropdown-body--align-left bg-color-white"><div class="grid-container"><div class="grid-x grid-margin-x grid-margin-y justify-content-center py-3"><div class="cell small-12 medium-4 large-3 border-right-1px-black--20--lg"><p class="text-s text-color-black--60 pl-1">FEATURES</p><div class="my-0--sm my-0--md my-3--lg"><div class=""><a href="/features" class="text-color-black text-color-2--hover text-weight--400 pl-1 pb-0--sm pb-0--md nav__item-link">Prism Overview</a></div><div class="text-s text-color-black--46 mt-0 pl-1">Analyze, graph and present your work</div></div><div class="my-0--sm my-0--md my-3--lg"><div class=""><a href="/features#analysis" class="text-color-black text-color-2--hover text-weight--400 pl-1 pb-0--sm pb-0--md 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In</a></li><li class="secondary-nav__item secondary-nav__item-search dropdown"><a class="nav__item-link dropdown-title"><span class=""><span class="dropdown-title__text"><i class="wrapper-icon wrapper-icon-search"></i></span></span></a><span class="dropdown-body dropdown-body--align-left bg-color-black--10 header__search"><div class="grid-container"><div class="grid-x"><div class="cell"><div class="search-form"><form class="form form--stacked" method="get" action="/search/"><input type="search" maxLength="250" class="field__input field__search" id="searchquery" name="searchquery" placeholder="Search..." autoComplete="off"/></form></div></div></div></div></span></li><li class="secondary-nav__item secondary-nav__item-trial"><a href="//www.graphpad.com/demos/" type="button" class="btn btn-primary btn-s"><i class="wrapper-icon wrapper-icon-arrow-to-bottom"></i> Free Trial</a></li></ul></div></div></div></div></div></div></header><main><div class="" role="main"><section class="section-hero section-hero-text-left section-hero-color-gradient"><div class="grid-container"><div class="grid-x"><div class="cell"><h1 class="heading section-hero__title">Survival Analysis</h1><div class="section-hero__description">Survival analysis reveals insights into time-to-event data, enhancing prediction and understanding of outcomes</div><div class="grid-x grid-margin-x grid-margin-y section-hero__action"><div class="cell medium-shrink"><div class="grid-x grid-margin-x grid-margin-y"><div class="cell shrink medium-shrink"><a href="//www.graphpad.com/demos/" type="button" class="btn btn-primary btn-s section-hero__button">Start a Free Trial</a></div><div class="cell shrink medium-shrink"><a href="//www.graphpad.com/how-to-buy/" type="button" class="btn btn-outline2-info-light btn-s section-hero__button">Pricing</a></div></div></div></div><div class="section-hero__background section-hero__background--right section-hero__background--bottom"><img class="image h-60" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/graphic-step-graph-576.png"/></div></div></div></div></section><section class="landing-simple-section bg-color-black--02"><div class="grid-container"><div class="grid-x"><div class="cell"><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-0">Survival Analyses Supported by Prism</h2><div class="landing-simple-section__description-v2 text-l text-center mt-4">Prism is already formatted for the survival analysis test you want to run:</div><div class="grid-x grid-margin-x grid-margin-y justify-content-center"><div class="cell small-12 medium-6"><div class="box box--shadow bg-color-white"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/kaplan-meier.gif"/></div><p class="text-xxxl">Kaplan-Meier Survival Analysis</p><p class="">A simple and common method to estimate the survival curve.</p></div><div class="cell small-12 medium-6"><div class="box box--shadow bg-color-white"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/cox-regression.gif"/></div><p class="text-xxxl">Cox Proportional Hazards Regression</p><p class="">A model which allows additional variables to be included, assuming that the hazard ratio when comparing two groups is consistent over time.</p></div></div></div></div></div></section><section class="landing-simple-section"><div class="grid-container"><div class="grid-x"><div class="cell"><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-0">Performing Simple Survival Analysis in Prism</h2><div class="landing-simple-section__description-v2 text-l text-center mt-4">See how to execute Kaplan-Meier 3 simple steps:</div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">1</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">Enter Your Data</h3><div class="feature__meta-description">The data table is already correctly structured according to the analysis you are running. The table incorporates the time elapsed, survival status, and additional variables if you are running cox proportional hazards regression analysis. If you do not have data yet, there is a sample data set prepared for you.</div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image image--shadow" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/survival-in-Prism-Step-1-w800.jpg"/></span></div></div></div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">2</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">Run Your Analysis</h3><div class="feature__meta-description">Select either Kaplain Meier or Cox Regression analysis based on your use case. Both analyses have preselected parameters.</div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image image--shadow" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/survival-in-Prism-Step-2-w800.jpg"/></span></div></div></div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">3</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">Customize Your Visualizations</h3><div class="feature__meta-description"><p class="">You can use Prism's Analysis Checklists to investigate the assumptions and reduce errors in your analysis. You can also choose from hundreds of customization options to adjust your graphs and charts for clarity on the survival times, associations, assumptions, and comparisons.</p><p class="">Now you can confidently present publication-worthy visuals that highlight your most important findings in an elegant, consumable format.</p><ul class="ul ul-default"><li class="li">Graph Highlights & stars</li><li class="li">Automatically Labelled Graphs</li><li class="li">Improved Grouped Graphs</li></ul></div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image image--shadow" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/survival-in-Prism-Step-3-w800.jpg"/></span></div></div></div></div></div></div></section><section class="bg-color-black--02 py-8"><div class="grid-container"><div class="grid-x align-items-center"><div class="cell medium-auto text-center px-12 px-8--md px-16--lg"><div class="mb-m20--lg"><img class="image image--shadow" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/cloud/prism-desk-mac.png"/></div></div><div class="cell medium-8"><h2 class="heading heading-l">Involve your team at any step in the process.</h2><div class="text-m">Share your data, analyses, and graphs in one click.</div><p class=""><a href="/cloud" class="link text-m">Learn more</a></p></div></div></div></section><section class="landing-simple-section"><div class="grid-container"><div class="grid-x"><div class="cell"><div class="grid-x grid-margin-x grid-margin-y"><div class="cell small-12"><h3 class="heading post-element__title-h3">Survival Analysis Highlights</h3></div></div><div class="grid-x grid-margin-x grid-margin-y justify-content-center"><div class="cell small-12 medium-6"><p class="post-element__paragraph">Prism is purpose-built for scientists to easily perform Survival Analysis, which estimates the lifespan of a population over the timespan of an experiment. More specifically, Survival curves graphically represent the data collected in these experiments, showing the relationship between elapsed time and survival probability. If survival curves for different groups or populations have been generated (using the Kaplan-Meier estimation method), these can be compared using the log rank test.</p></div><div class="cell small-12 medium-6"><div class="box bg-color-black--02 px-8 py-4"><p class="post-element__paragraph">Survival Analysis can be used to answer many questions :</p><ul class="ul ul-default post-element__ul"><li class="li post-element__list-item">How much of a population will survive past a certain time?</li><li class="li post-element__list-item">At what rate will the event occur?</li><li class="li post-element__list-item">Should multiple variables be considered a cause?</li></ul></div></div></div></div></div></div></section><section class="landing-simple-section"><div class="grid-container"><div class="grid-x"><div class="cell"><div class="post-element__line"></div><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-0">Access Other Survival Analysis Resources</h2><div class="grid-x grid-margin-x grid-margin-y justify-content-center my-10"><div class="cell small-12 medium-4"><a href="https://go.graphpad.com/video/understanding-kaplan-meier" class="link"><img class="image w-100" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/anova/survival-kaplan-meier-w1146-800.png"/></a></div><div class="cell small-12 medium-4"><a href="/guides/survival-analysis" class="link"><img class="image w-100" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/anova/survival-prism-survival-w1146-800.png"/></a></div><div class="cell small-12 medium-4"><a href="https://go.graphpad.com/video/cox-proportional-hazards-regression-analysis" class="link"><img class="image w-100" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/anova/survival-cox-proportional-w1146-800.png"/></a></div></div></div></div></div></section><section class="section-try-for-free"><div class="grid-container"><div class="grid-x 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