turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

Find a Community

- Home
- /
- Analytics
- /
- Stat Procs
- /
- Include multiple independent variable

Topic Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

06-10-2016 07:04 AM

I want to do a logistic regression where there are many indepedent varables. How to

- write them all varaibles ?
- write a subset of all the variables?
- How to know which variables are imp for my calculations?
- Can VIF be done in logistic regression ?

Pl guide.

Regards

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

06-10-2016 12:24 PM

RE 1/2

To list multiple or select variables you can use variable lists.

Read the documentation that illustrates how you can reference multiple variables at once.

RE 3

Look at the P-Value along with effect size to determine if a variable is significant

RE 4

I don't know if it does, but you can use PROC REG to calculate VIF first if required.

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

06-11-2016 02:37 AM

How to write them all varaibles ?
Use variable list method : model y=FirstVariable -- LastVariable;
write a subset of all the variables?
Ditto.
How to know which variables are imp for my calculations?
Check ANOVA Table and ODDS Ratio.
The biggest ODDS Ratio should be the most important variable.
Can VIF be done in logistic regression ?
No. You can't . But you can use SELECTION=STEPWISE to pick up the best sub-model.

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

06-11-2016 02:45 AM