Yawo1964's articles:

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Creating a Non-Self Mean/Proportion 2 140 (11/20/2009 11:25:25 AM) comp.soft-sys.sas Hello, I have created a summed scale of 2 dichotomous items coded originally 0 1. The new variable now has values ranging from 0 to 2. Since I am using a survey that I want to create summary measures l... Yawo1964

Re: Need Help Creating a Matrix #6 0 24 (11/15/2009 5:56:38 PM) comp.soft-sys.sas Yes, Art -- I caught my mistake and was able to specify the data step correctly, as shown below: *data have;* * set Cwn_stud.Shinno;* *run;* ------------------------------------------------------------------ ... Yawo1964

Re: Need Help Creating a Matrix #4 0 19 (11/15/2009 5:02:50 AM) comp.soft-sys.sas please ignore my previous post ... I managed to correct the data step thus: *data have;* * set Cwn_stud.Shinno;* *run;* * * -- my SAS has become rustic through disuse, but I managed to get the matrix working ... Yawo1964

Re: Need Help Creating a Matrix #3 0 23 (11/15/2009 4:16:50 AM) comp.soft-sys.sas Thanks to you both for your responses. I tried the sample code and got this error. ------------------------------------------------------------------------ *85 data Cwn_stud.Egonet_shinn_data* *86 proc sq... Yawo1964

Re: Need Help Creating a Matrix #2 0 26 (10/27/2009 4:48:27 PM) comp.soft-sys.sas Ya Huang, thanks very much for your response... ... I will try out the code later tonight and report back. rgds, Cy ------------------------------------------------------------------ On Mon, Oct 26, 2009 at... Yawo1964

Need Help Creating a Matrix 1 22 (10/26/2009 1:41:45 PM) comp.soft-sys.sas Hi, I have a dataset with the following structure. ColumnA ColumnB ColumnC ClassA OtherStud WorkWith AA DD 1 AA EE... Yawo1964

Treatment of Missing Variables - What Options 0 21 (7/15/2009 2:29:16 PM) comp.soft-sys.sas Hello, I am running a logistic regression model (using a Demographic and Health surveys dataset) and realized a drastic reduction in my sub-population size. I traced the problem to a variable with a lot of mis... Yawo1964

Re: Cronbach's and Kuder-Richardson Alpha: How Low? #2 0 22 (4/11/2009 6:01:40 AM) comp.soft-sys.sas Thanks for all your responses regarding my question. I agree with all your suggestions, and I will look deeper into my data for other indicators of internal consistency, and take a decision guided by my discipl... yawo1964

Cronbach's and Kuder-Richardson Alpha: How Low? 1 25 (4/10/2009 5:22:36 PM) comp.soft-sys.sas Hello, I am trying to develop some summed scales using "Demographic and Health Surveys". I know that alphas greater than .70 are often acceptable. But is this cut-off dependent on field? Some have suggested t... yawo1964

Logistic Regression and Unequal Distribution of Dependent Variable 0 29 (3/8/2009 7:49:59 PM) comp.soft-sys.sas Hello, I'm preparing to run a logit model predicting the odds of NOT testing for an STD. As you can see from the table below, 2934 (about 86%) of respondents have my outcome of interest (i.e., have not tested ... yawo1964

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Testing Difference in Means for 30 cases 4 22 (5/19/2005 8:58:05 PM) comp.soft-sys.sas Hi there, I am interested in estimating the difference in (mean) between 30 students when they are on campus versus when they are outside (on holidays). T here is no clear dependent variable. I am only inte... Yawo1964 (17)