Calculate Standard Deviation (SD) from P-value in 2 Groups
Description of the formula
Variables Definitions
- P-value: A statistical measure that helps researchers assess the evidence against a null hypothesis. In this context, it represents the p-value associated with the comparison of means between two groups.
- Number of Participants in Group 1: The total number of individuals or data points in the first group.
- Number of Participants in Group 2: The total number of individuals or data points in the second group.
- Mean Difference (MD): The difference in means between the two groups. It represents the numerical gap between the average values of the two groups.
- Standard Deviation (SD) Result: The calculated standard deviation based on the provided p-value and other information.
Conversion Formula
The conversion process involves the following steps:
- Calculate the t-value from the P-value:
- Calculate the Standard Error (SE):
- Calculate the Standard Deviation (SD):
- **Formula Reference - Cochrane Handbook**