# Binomial Logistic Regression/ Simple Logistic Regression

This is used to predicts if an observation falls into one of categories of dichotomous dependent variables based one or more dependent variables

- Click Analyze- Regression- Binary Logistic

-the logistic Regression dialogue box opens

- Transfer the dependent variable into the dependent box and independent variables into the Covariates box.

- For standard logistic regression, you should ignore the Previous and the Next buttons because they are for sequential (hierarchical) logistic regression.
- The Method: Option needs to be kept at the default value which is “ENTER”
- The enter method is the name given by SPSS statistics to standard regression analysis

- Click the Categorical button.

-the Logistic Regression: Define Categorical Variables dialogue box

– SPSS statistic requires you to define all the categorical predictor values in the logistic regression model.

- Transfer the Independent, categorical variable from the Covariates box to the Categorical Covariates: box.
- In the Change Contrast area, Change the Reference Category from the Last Option to First Option. Then click the Change Button.

- Whether you choose Last or First will depend on how you set up your data.

- Click the Continue button.

- You will return to the Logistic Regression dialogue box.

- Click the Option button.

- You will be presented the Logistic Regression: Option

- In the Statistics and Plots area, click the Classification plots, Hosmer-Lemeshow goodness-of-fit, Casewise listing of residuals and CI for exp(B): options, and in the Display area, click the At last step option.
- Click the Continue button.

-you will be returned to the Logistic Regression dialogue box

- Click the Ok button to generate the output.

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