Calculate Standard Deviation (SD) from Confidence Interval (CI) in 2 Groups

By inputting the upper and lower CI limits, CI level, and the number of participants in each group, this tool calculates the corresponding SD.

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Calculate & Input

Conversion Results

Study ID Upper (CL) Lower (CL) CI Level No. (G1) No. (G2) SD
1 20 10 25 12 0.8 5

Description of the formula

Variables Definitions

  1. Confidence Interval (CI): This represents the confidence level expressed as a decimal value. For example, 0.95 corresponds to a 95% confidence interval.
  2. Number of Participants: The total number of individuals or data points in the sample or study.
  3. Upper CI Limit: The upper limit of the confidence interval.
  4. Lower CI Limit: The lower limit of the confidence interval.
  5. Standard Deviation (SD): The calculated standard deviation based on the provided confidence interval information.

Conversion Formula

  1. Calculation of the standard errors wide

functionally

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