{"id":54473,"date":"2026-05-26T11:46:25","date_gmt":"2026-05-26T09:46:25","guid":{"rendered":"https:\/\/novustat.com\/?p=54473"},"modified":"2026-09-24T09:43:06","modified_gmt":"2026-09-24T07:43:06","slug":"statistical-analysis-plan-why-sap-safeguards-clinical-trials","status":"publish","type":"post","link":"https:\/\/novustat.com\/en\/statistik-blog\/statistical-analysis-plan-why-sap-safeguards-clinical-trials.html","title":{"rendered":"Statistical Analysis Plan: Why SAP safeguards clinical trials"},"content":{"rendered":"\n
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26. May 2026<\/div>\n<\/p><\/div>\n
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Statistical Analysis Plan: Why SAP safeguards clinical trials<\/h1>\n<\/p><\/div>\n
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A Statistical Analysis Plan (SAP) describes in advance how clinical study data will be statistically analyzed. Among other things, it defines endpoints, analysis populations, statistical methods, missing data strategies and sensitivity analyses<\/a> before the final results are known. <\/p>\n

In clinical trials, the SAP is therefore more than just a technical document. It protects the evaluation from retrospective decisions, reduces scope for interpretation and creates a reliable basis for the study report, publication and regulatory assessment. <\/p>\n

Regulatory guidelines such as ICH E9 therefore expect key analysis decisions to be defined before the database is closed and before the final results are known. These include endpoint definitions, analysis populations, missing data strategies and the handling of multiple statistical tests. <\/p>\n<\/p><\/div>\n

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What is a statistical analysis plan?<\/h2>\n<\/p><\/div>\n
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A statistical analysis plan is a detailed analysis plan for clinical study data. It supplements the study protocol and describes how statistical analyses are to be carried out in concrete terms. While the study protocol primarily defines medical and organizational aspects of a study, the SAP describes the statistical implementation. This includes, among other things <\/p>\n