Calculating Mean and Standard Deviation in Paired or Single-Group Designs

Scenario 1: Calculate Pre-Post Mean Difference and its Standard Deviation
Baseline: Mean Standard Deviation
Post:         Mean Standard Deviation
Correlation Coefficient

If sample size is provided, the standard error and confidence interval can also be calculated.

    Number of pairs
Confidence level

Result:           Mean difference Standard Deviation
Standard Error
Confidence Interval    Lower Limit    Upper Limit
Scenario 2: Calculate Before and After Mean Difference and Standard Error Within a Single Group
Baseline: Mean Standard Error Sample size
Post:        Mean Standard Error Sample size
Correlation Coefficient
Confidence level

Result:           Mean Difference Standard Deviation
Standard Error
Confidence Interval    Lower Limit    Upper Limit

Reference:

[1] Michael Borenstein, and Larry V.Hedges et, al. 2013. Introduction to Meta-analysis.
[2] Cochrane. 2006. Cochrane Handbook for Systematic Reviews of Interventions V4.2.6.