Confidence Interval (CI) ---> Standard Deviation (SD) in One Group

The conversion process requires four inputs: the confidence interval (CI) level, the number of participants, and the upper and lower CI limits to provide you with the standard deviation (SD).

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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 CI Level Participants Lower CI Upper CI SD
1 20 10 25 12 0.8

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 (n): 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.

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