Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: Factor Analysis with Sampling weights
From
Afif Naeem <[email protected]>
To
<[email protected]>
Subject
st: Factor Analysis with Sampling weights
Date
Fri, 7 Sep 2012 21:33:05 -0400
Hello everyone, I sent this question about 3 days ago but did not get any response. I am giving it another try, and hope someone is able to help this time around.
I am trying to use exploratory Factor Analysis on 15 variables in the data set. The data set is not a good representative of the general population if used without the Sampling Weights. Hence I have used Sampling Weights in the rest of the empirical analysis. I have two questions in this regard, which are:
1 - Should I use Sampling Weights to construct Factor Scales in exploratory common Factor Analysis. Would the Sampling Weights be counted twice if I use them to construct Factor Scales, and then use the Sampling Weights in regression analysis with these very Factor Scales present in the model?
2 - Is there an easy way to account for Sampling Weights in the exploratory common Factor Analysis. I have been looking for a way to use Factor Analysis while using Sampling Weights, and the one method that works is inputting the Sampling Weight adjusted correlation matrix (which I obtained by regressing each one of the 15 variables on the rest of the variables, one at a time, and taking the square root of the R-squared of the model, which also is Sample Weight adjusted correlation between the two variables).
This method takes a very long time. I was wondering if there is more time efficient method to do the exploratory common Factor Analysis using Sampling Weights?
Thanks,
Afif
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/