|
USA-IN-SEYMOUR Azienda Directories
|
Azienda News:
- GraphPad Prism 10 Statistics Guide - The Holm-Šídák method
In Prism, analyzing a stack of P values can be performed using the Holm-Šídák, Bonferroni-Dunn (often, just "Dunn"), or Bonferroni-Šídák (often, just "Šídák") methods • The Šídák modification of the Holm test mentioned above makes it a bit more powerful, especially when there are many comparisons
- Statistical notes for clinical researchers: post-hoc multiple . . .
Many statisticians have devised various multiple comparison methods to correct the α FW within an acceptable level of 0 05 The methods can be categorized into three types according to the size and nature of family of tests, such as restricted sets of contrasts, pairwise comparisons, and post-hoc error correction
- multiple comparisons - What are the (practical) differences between . . .
Tukey HSD is a method to compare among means of multiple groups, as would be common as a post-hoc test after a one-way anova It is limited by requirements for normality and homoscedasticity Modern statistical software has techniques with fewer restrictions, e g this, and this
- A Guide to Using Post Hoc Tests with ANOVA - Statology
Fortunately, post hoc tests provide us with a way to make multiple comparisons between groups while controlling the family-wise error rate The following example illustrates how to perform a one-way ANOVA with post hoc tests
- Power of Holms multiple comparison testing compared to others
Holm's test (or better, the Holm-Sidak) test has lots of power, but because it works in a stepwise manner, it cannot compute confidence intervals Its advantage over the tests than can compute confidence intervals (Tukey, Dunnett) is that is has more power
- Key facts about the Bonferroni and Šídák methods - GraphPad
For example, use the Tukey method when comparing every mean with every other mean, and use Dunnett's method to compare every mean with a control mean But use Bonferroni or Šídák when you select a set of means to compare
- GraphPad Prism 10 Statistics Guide - How the Holm-Sidak method works
Prism actually uses the Šídák modification, so computes the Holm-Šídák test At steps 5-7 above, the P value is not compared to to alpha i but rather to 1- (1-alpha)(1 i)
- Holm-Sidak t-test - File Exchange - MATLAB Central - MathWorks
The Holm-Sidak test is a step-down "recursive reject", because it applies an accept reject criterion on a sorted set of null hypothesis, starting from the lower p-value and going up to the acceptance of null hypothesis
- Comparing multiple comparisons: practical guidance for choosing the . . .
In this study, we evaluated 17 different MCTs We first reviewed the published literature for recommendations on their correct use Second, we created a simulation that evaluated the performance of
- On the use of post-hoc tests in environmental and biological sciences . . .
Post-hoc comparison procedures are commonly used to determine which group means differ after a significant analysis of variance (ANOVA) Several post-hoc tests have been proposed, but their use requires certain assumptions to be met, such as normality, equality of variance, and balanced group size
|
|