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Survival Analysis Power Analysis/Ushahidi
Rekodi ya ushahidi wa mbinu

Survival Analysis Power Analysis

Power analysis for survival studies determines how many participants — and how many observed events — are required so that a log-rank test or Cox regression has a sufficient probability of detecting a clinically meaningful difference in survival between groups. The foundational formulas were derived by Schoenfeld (1981) and Lachin (1981) and remain the standard approach in clinical trial planning.

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Sample Size and Power Analysis for Survival Analysis (Log-rank and Cox Regression)
Rekodi ya mbinu ya kiajenda · hypothesis-test / statistics
  • Schoenfeld, D. A. (1981). The asymptotic properties of nonparametric tests for comparing survival distributions. Biometrika, 68(1), 316–319. · DOI 10.1093/biomet/68.1.316
  • Lachin, J. M. (1981). Introduction to sample size determination and power analysis for clinical trials. Controlled Clinical Trials, 2(2), 93–113. · DOI 10.1016/0197-2456(81)90001-5
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See alsoCox proportional hazardsmachine-suggested · Relational suggestion, not evidence.See alsoKaplan-Meiermachine-suggested · Relational suggestion, not evidence.See alsoLog-Rank Testmachine-suggested · Relational suggestion, not evidence.Same method familyPower Analysis for Proportionsmachine-suggested · Relational suggestion, not evidence.Same method familyPower Analysis for t-testmachine-suggested · Relational suggestion, not evidence.Same method familySimulation-Based Power Analysismachine-suggested · Relational suggestion, not evidence.

Hali ya ushahidi

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

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