1. [Home](https://www.g2.com/) 2. ... 3. [Statistical Analysis Software](https://www.g2.com/categories/statistical-analysis) 4. [PS Power and Sample Size Discussions](https://www.g2.com/products/ps-power-and-sample-size/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_638347c53358d91a5983c832dfd2caf6/ps-power-and-sample-size.jpg "Product Avatar Image") ](/products/ps-power-and-sample-size/reviews) [ PS Power and Sample Size ](/products/ps-power-and-sample-size/reviews) (1)0.5/5 PS is an interactive program for performing power and sample size calculations that may be downloaded for free. It can be used for studies with dichotomous, continuous, or survival response measures. The alternative hypothesis of interest may be specified either in terms of differing response rates, means, or survival times, or in terms of relative risks or odds ratios. Studies with dichotomous or continuous outcomes may involve either a matched or independent study design. The program can determine the sample size needed to detect a specified alternative hypothesis with the required power, the power with which a specific alternative hypothesis can be detected with a given sample size, or the specific alternative hypotheses that can be detected with a given power and sample size. Show More * * * ### -100.0 Nps Score Already have PS Power and Sample Size? ### All PS Power and Sample Size Discussions Search Most CommentedMost HelpfulCommon QuestionsNewest All DiscussionsDiscussions with CommentsCommon QuestionsDiscussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Common Questions Newest Filter by All Discussions Discussions with Comments Common Questions Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • about 3 years ago More Options - [ # What is PS Power and Sample Size used for? ](/discussions/what-is-ps-power-and-sample-size-used-for) What is PS Power and Sample Size used for? [ Statistical Analysis Software ](https://www.g2.com/tags/statistical-analysis-software) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+PS+Power+and+Sample+Size+questions+and+get+answers+from+expert+users+in+our+PS+Power+and+Sample+Size+Discussions+section.&title=PS+Power+and+Sample+Size+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=PS+Power+and+Sample+Size+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=PS+Power+and+Sample+Size+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss%0aAsk+PS+Power+and+Sample+Size+questions+and+get+answers+from+expert+users+in+our+PS+Power+and+Sample+Size+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=PS+Power+and+Sample+Size+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss%0aAsk+PS+Power+and+Sample+Size+questions+and+get+answers+from+expert+users+in+our+PS+Power+and+Sample+Size+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/ps-power-and-sample-size/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_638347c53358d91a5983c832dfd2caf6/ps-power-and-sample-size.jpg "Product Avatar Image") ### Have you used PS Power and Sample Size before? Answer a few questions to help the PS Power and Sample Size community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/login?context=product_review&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fps-power-and-sample-size%2Fdiscuss%3Fsmall_ask%3Dps-power-and-sample-size) No