Confidence Interval (CI) ---> Standard Deviation (SD) in 2 Groups

By inputting the upper and lower confidence interval (CI) limits, CI level, and the number of participants in each group, this tool calculates the corresponding standard deviation.

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If you want to convert or calculate data for more than one study at the same time, enter data for study 1, study 2, study 3, ...etc, RESPECTIVELY across all cells using the same order.

Conversion Results

Study ID Upper (CL) Lower (CL) CI Level No. (G1) No. (G2) SD

Description of the formula

Variables Definitions

  1. Upper CI Limit: The upper limit of the confidence interval for the data collected in both groups.
  2. Lower CI Limit: The lower limit of the confidence interval for the data collected in both groups.
  3. CI Level: The confidence interval level is expressed as a decimal value (e.g., 0.95 for a 95% confidence interval).
  4. Participants in Group 1: The number of participants in the first group.
  5. Participants in Group 2: The number of participants in the second group.
  6. Standard Deviation (SD): The calculated standard deviation based on the provided confidence interval information.

For more details about these variables and used formulas, read the full article.