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What’s New in SAS/STAT 9.22

POWER Procedure

You can now parameterize computations for survival analysis in terms of the expected number of events, in addition to sample size. See the EVENTSPERGROUP=, EVENTSTOTAL=, and GROUPEVENTS= options in the TWOSAMPLESURVIVAL statement. Parameterization in terms of sample size accrued per unit time is also available in this statement with the ACCRUALRATEPERGROUP=, ACCRUALRATETOTAL=, and GROUPACCRUALRATES= options.

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