To calculate an adequate sample size for a future or planned trial, please visit thesample size calculator. References and Additional Reading Rosner B.Fundamentals of Biostatistics. 7th ed. Boston, MA: Brooks/Cole; 2011. Levine M, Ensom MH. Post hoc power analysis: an idea whose time has ...
Post-hoc Statistical Power Calculator for Hierarchical Multiple Regression This calculator will tell you the observed power for a hierarchical regression analysis; i.e., the observed power for a significance test of the addition of a set of independent variables B to the hierarchical model, over ...
Soper, D.S. (2025). Post-hoc Statistical Power Calculator for a Student t-Test [Software]. Available from https://www.danielsoper.com/statcalc Reference from the Scientific Literature Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd Edition). Hillsdale, NJ: Lawr...
Post Hoc Secondary Analysis We conducted exploratory subgroup analyses based on age (<18 or ≥18 years) and PMCA index (no chronic condition vs noncomplex or complex chronic condition), and race and ethnicity, acknowledging disparities in children and young adult, the presence or severit...
Results of the cell-type deconvolution analysis for (A) KCL BrainBank cases and (B) TargetALS cases. Results were corrected for age of death and sex assigned at birth. Asterisks refer to one-way ANCOVA post-hoc Tukey p-values: * < 0.05, ** < 0.01, *** < 0.001 Full size image Clu...
Understanding how to interpret severity is key for putting the results from a severity calculator to good use. Interpreting the severity of a given test in relation to a given inference about μis straightforward: the higher the severity of the test, the higher its probativeness is relative to...
(1987) suggestion for a minimum subject-to-item ratio of 10:1 for confirmatory factory analysis, the sample size of 209 respondents seems to be sufficient. Moreover, based on a-priori sample size calculator for SEM, a sample size of 156 is considered sufficient. Thus, the sampling technique...
In a post hoc analysis of the Prolonging Dual Antiplatelet Treatment After Grading Stent- Induced Intimal Hyperplasia Study (PRODIGY), it was observed that patients at HBR according to the CRUSADE score treated with a 24-month DAPT experienced a 3-fold higher risk of major bleeding and a 5-fo...
Below you will find a complete set of details for 5 different references / citations that are related to the computation of post-hoc statistical power values for hierarchical multiple regression studies. Reference for Citing the Online Calculator ...
Comparisons among three or more groups were performed by one-way analysis of variance (ANOVA), and we chose the Tukey post hoc test when comparing every mean with every other mean, while the Sidak post hoc test was used when comparing selected pairs of means, with the selection based on ...