Previous waves I have seen from the ELSA mention a general measure of cognitive ability which enable the analysis of cognition over all rathern than the singular tests themselves eg. word list immediate recall. Is there a general cognitive measure for wave 6? If there isn't a general cognitive measure is it ok to run several Multiple Linear Regressions on the cognitive tests I am looking at or will multiple comparison issues affect this approach?
Hi Georgina
Gale et al have recently published a paper looking at cognitive ability and participation in health screening using ELSA. They generated a measure of general cognitive ability using principle component analysis on the test scores. I have attached the link to the article, where you can read the detail of their methodology.
Gale CR, et al. J Epidemiol Community Health 2015;69:530–535. doi:10.1136/jech-2014-204888
http://jech.bmj.com/content/69/6/530.abstract
Hope this helps
Christine
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