Thank you Joseph. I do believe that age affects both the difficulty score
and overall health self-rating score.
Thanks again for any help anyone can provide.
Ilesh
On 13/10/04 12:25 AM, "Joseph Coveney" <[email protected]> wrote:
> Ilesh Patel wrote:
>
> I have computed a difficulty score for a range of vision tasks and want to
> see if there is a difference in the mean score by self-rated overall health
> (scored from 1 =AD 4). Following is what I used:
>
> Sort overall_hlth
>
> by overall_hlth: ci diff_score
>
> This gives me the mean difficulty score and it=B9s CI for each of the 4
> self-rated overall health groups. What command do I use in Stata to adjust
> the CI for age given that I think age affects both the difficulty score.
>
> ----------------------------------------------------------------------------
>
> The nature of the adjustment that you'd do would depend upon what you
> believe the nature of the functional relationship is between age and
> difficulty score. In the simple case, it seems that you could first
> use -regress-, with both age and overall health self-rating score as
> predictors (independent variables), and then -adjust-; the latter has a -ci-
> option.
>
> If, on the other hand, you meant to write ". . . age affects both the
> difficulty score *and the overall health self-rating score*," then you have
> issues for which others on the list will be capable to help.
>
> Joseph Coveney
>
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/support/faqs/res/findit.html
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
Yours sincerely,
Ilesh Patel
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
