The POWER Procedure
- Overview
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Getting Started
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SyntaxPROC POWER StatementCOXREG StatementLOGISTIC StatementMULTREG StatementONECORR StatementONESAMPLEFREQ StatementONESAMPLEMEANS StatementONEWAYANOVA StatementPAIREDFREQ StatementPAIREDMEANS StatementPLOT StatementTWOSAMPLEFREQ StatementTWOSAMPLEMEANS StatementTWOSAMPLESURVIVAL StatementTWOSAMPLEWILCOXON Statement
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Details
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ExamplesOne-Way ANOVAThe Sawtooth Power Function in Proportion AnalysesSimple AB/BA Crossover DesignsNoninferiority Test with Lognormal DataMultiple Regression and CorrelationComparing Two Survival CurvesConfidence Interval PrecisionCustomizing PlotsBinary Logistic Regression with Independent PredictorsWilcoxon-Mann-Whitney Test
- References
Memory
In the TWOSAMPLESURVIVAL statement, the amount of required memory is roughly proportional to the product of the number of subintervals (specified by the NSUBINTERVAL= option) and the total time of the study (specified by the ACCRUALTIME= , FOLLOWUPTIME= , and TOTALTIME= options). If you run out of memory, then you can try either specifying a smaller number of subintervals, changing the time scale to a use a longer time unit (for example, years instead of months), or both.