Rate difference Vs. Logistic Regression Analysis

When you have N (Total Numbers) and % (Percentage), Rate difference is simply the difference between maximum and minimum percentage value.

Meanwhile, Rate ratio is the maximum percentage value divided by minimum percentage value.

In the Statistical Analysis,
Once you have already conducted logistic Regression Analysis, it's not necessary to further derive Rate difference. As findings of Rate difference and Logistic Regression Analysis give the result with the same notion.

So it is not preferred to both things in statistical analysis.

Complex Sample Logistic Regression Analysis in SPSS IBM 20

Go to DATA
Go to SELECT CASES

Once the SELECT CASES box Opens

Then Click on IF CONDITION IS SATISFIED

Click on ANALYSE button on the tool bar.Go to COMPLEX SAMPLES and thereafter to LOGISTIC REGRESSION.

Then Click on ODDS RATIO tab.

In the Complex Samples Logistic Regression box, the Variables that you have selected for FACTORS box, will then arrive in COMPLEX SAMPLES LOGISTIC REGRESSION: ODDS RATIO's FACTORS box