Groups Comparison: Statistical significance using one or two-tailed tests

[Flo Skuras]

Good afternoon,

When comparing groups using cBioPortal, do you use one-tailed or two-tailed tests to test the statistical significance?

Thanks!

[Florencia Skuras (fs1g21)]

Good afternoon,

When comparing groups using cBioPortal, do you use one-tailed or two-tailed tests to test the statistical significance? Is this applicable to all statistical tests? If not which one is used for log-rank test, chi-squared test, and Wilcoxon test?

Thanks!

 

[debr...@mskcc.org]

Thanks for your question Florencia! We will look into it and let you know

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[JJ Gao]

Hi Florencia,

Here are the different tests used in the Comparison view. Please note that the information is available when hovering over the p-value column.

• Survival tab: Log-rank test
• Clinical tab:
• Continuous data: Chi-squared test
• Categorical data: Kruskal Wallis test
• Other tabs
• 2 groups
• Continuous data: one-sided t-test
• Categorical data: one-sided Fisher's exact test
• 3 or more groups
• Continuous data: one-way ANOVA
• Categorical data: Chi-squared test

Thanks,

-JJ

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