Power and Sample Size Tools

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Documentation for package ‘powertools’ version 0.1.2

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altprimary Power calculation for multiple alternative (at least one) primary continuous endpoints assuming known covariance matrix
anova1way.c.bal Power calculation for one-way balanced analysis of variance contrast test
anova1way.c.unbal Power calculation for one-way unbalanced analysis of variance contrast test
anova1way.F.bal Power calculation for balanced one-way ANOVA omnibus F test
anova1way.F.unbal Power calculation for unbalanced one-way analysis of variance omnibus F test
anova2way.c.bal Power calculation for two-way balanced analysis of variance contrast test
anova2way.c.unbal Power calculation for two-way unbalanced analysis of variance contrast test
anova2way.F.bal Power calculation for two-way balanced analysis of variance F tests
anova2way.F.unbal Power calculation for two-way unbalanced analysis of variance F tests
anova2way.se.bal Power calculation for test of simple effect for two-way balanced analysis of variance
anova2way.se.unbal Power calculation for test of simple effect for two-way unbalanced analysis of variance
chisq.gof Power calculation for chi-square goodness-of-fit test
chisq.indep Power calculation for chi-square test of independence
ci.mean Power calculation for precision analysis (confidence interval) for one mean
ci.meandiff Power calculation for precision analysis (confidence interval) for a difference between two means
coprimary.t Power calculations for multiple co-primary continuous endpoints assuming unknown covariance matrix
coprimary.z Power calculations for multiple co-primary continuous endpoints assuming known covariance matrix
corr.1samp Power calculation for test of one correlation coefficient
corr.2samp Power calculation for comparing two correlation coefficients
crt.long.cont Power for test of treatment effect in longitudinal cluster randomized trial with baseline measurement
crt.means.r Correlation between a cluster mean at baseline and follow up
crt.parallel.bin Power calculation for cluster randomized trial with binary outcome
crt.parallel.cont Power for cluster randomized trial with continuous outcome
crt.parallel.hte Power for detecting treatment effect heterogeneity in a cluster randomized trial with a continuous outcome
crt.varexplore Variance exploration for cluster randomized trials with binary outcomes
crt.xo.cont Power for test of treatment effect in 2x2 crossover cluster randomized trial
es.anova.f Cohen f effect size calculation for one- or two- way analysis of variance
es.d Cohen d effect size calculation for one or two means
es.fsq Cohen f-squared effect size for overall F test in multiple linear regression
es.h Cohen h effect size calculation for two proportions
es.q Cohen q effect size calculation for two correlation coefficients
es.w Cohen w effect size calculation for chi-square tests
irgtt.bin Power for individual randomized group treatment trial with binary outcome
irgtt.cont Power for individually randomized group treatment trial with continuous outcome
irt.hte Power for detecting treatment effect heterogeneity in an individually randomized trial with a continuous outcome
mlrF.overall Power calculation for a multiple linear regression overall F test
mlrF.partial Power calculation for a multiple linear regression partial F test
ms.varexplore Variance exploration for a multisite trial with a binary outcome
multisite.bin Power for a multisite trial with a binary outcome
multisite.cont Power for test of average treatment effect in a multisite trial
multisite.hte Power for test of heterogeneity of treatment effect in a multisite trial
prop.1samp Power calculation for one-sample proportion test
prop.2samp Power calculation for two-sample proportion test
prop.paired Power calculation for McNemar test of two correlated proportions
prop.test.equiv Power calculation for test of equivalence of two proportions
propodds Power calculations for ordinal categorical variable under proportional odds assumption
ranksum Power calculation for rank-sum test
re.clustsize.bin Relative efficiency of a cluster randomized trial with binary outcome with varying cluster sizes
re.clustsize.cont Relative efficiency of a cluster randomized trial with continuous outcome with varying cluster sizes
relrisk Power calculation for relative risk
signedrank Power calculation for signed-rank test
signtest Power calculation for sign test
slr Power calculation for a simple linear regression
ttest.1samp Power calculation for one-sample t test
ttest.2samp Power calculation for two-sample t test
ttest.paired Power calculation for paired t test
ztest.1samp Power calculation for one-sample z test
ztest.2samp Power calculation for two-sample z test
ztest.paired Power calculation for paired z test