Calculate OR, RR, and RD with Confidence Intervals from a Contingency Table in a Parallel Group Design
Group Cases Non-cases Total
Group 1
Group 1
Total
Confidence Level
Reference Group
Case-Control Design    OR Standard Error Lower Limit Upper Limit
          Cohort Design    RR Standard Error Lower Limit Upper Limit
          Cohort Design    RD Standard Error Lower Limit Upper Limit
OR：odds ratio; RR：relative risk; RD：risk difference；

Reference:

[1] Woodward, M. (2013). Epidemiology: Study Design and Data Analysis, Third Edition (3rd ed.). Chapman and Hall/CRC. https://doi.org/10.1201/b16343