OBGYN MSc Stat Module (2016-2018)
StatPgm 3b. Compare Two Proportions
Please note : the data presented in all course material for the statistical module are generated by computers to demonstrate the methodologies, and should not be confused with actual clinical information
Also : Programs can have default example data pre-inserted, or inserted when the Example button is clicked, for testing. Students can replace them with his/her own data
StatPgm 3b i. Sample Size for Comparing two proportions
Expected Proportion Group 1 :
Expected Proportion Group 2 :

StatPgm 3b ii. Comparing two proportions
The data are 2 x 2 numbers which are counts
    Attribute Positive in the top row, and attribute negative in the bottom row
    Group 1 to the left and group 2 to the right.
    Raw data can be converted into table of counts using the utility program
Group 1Group 2
Positive
Negative