Combine Mean & Standard Deviation (SD) & Total for More than One Group into Single One

This conversion process takes the means, standard deviations, and totals of multiple groups and combines them into a single set of values, making it easier to work with and interpret data.

OR

Calculate & Input

Group 1

Group 2

Group 3

If you want to combine only 2 groups, enter 0 for Mean 3, SD 3, and Total 3.

Group 1 Group 2 Group 3 Combined Results
Mean1 | SD1 | Total1 Mean2 | SD2 | Total2 Mean3 | SD3 | Total3 Mean | SD | Total

Conversion Results

Study ID Mean 1 SD 1 Total 1 Mean 2 SD 2 Total 2 Mean 3 SD 3 Total 3 C Mean C SD C Total
1 20 10 25 12 0.8 5 3 3 3 3 3 3

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

View more - Cochrane Handbook - Cochrane Handbook