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Searched for: Statistical Topic is Statistical Inference and Techniques -- Categorical Methods -- Proportions
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View Resource Statistical Tools: Two Arm Binomial

This page calculates either estimates of sample size or power for differences in proportions. The program allows for unequal sample size allocation between the two groups.

http://www.swogstat.org/stat/public/binomial_twoarm.htm
View Resource Statistical Tools: Two Arm Survival

This page calculates either estimates accrual or power for differences in survival times between two groups. The program allows for unequal sample size allocation between the two groups. The survival time estimates also allow for multiple strata or risk groups.

http://www.swogstat.org/stat/public/survival_twoarm.htm
View Resource Statistical Tools: Binomial Interaction

This page calculates either estimates of sample size or power for interaction tests. The program allows for unequal sample size allocation in the four cells defined by the two treatment groups and two strata.

http://www.swogstat.org/stat/public/int_binomial.htm
View Resource Statistical Tools: Two Stage

This page calculates estimates of sample size for a two-stage study, rejection and acceptance points for a two-stage trial, and power. User inputs hypothesized values as well as significance level.

http://www.swogstat.org/stat/public/twostage.htm
View Resource Statistical Tools: One Arm Binomial

This page calculates either sample size or power for one a one sample binomial problem. Users choose between a one-sided and two-sided test and specify the null and alternative hypothesized proportions. The calculator also gives the critical value.

http://www.swogstat.org/stat/public/one_binomial.htm
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