Ali wrote:
I am using a very large dataset (N=1.3m) to analyse the effect
of a categorical variable on gestational age (continuous variable).
I used linear regression (regress) but as you would probably expect
the residuals are not normally distributed. I used qreg but the
results do not look right.
Could anyone tell me what is the best analysis for continuous
gestational please.
--------------------------------------------------------------
Your outcome variable is time to an event; this calls for survival
analysis, e.g. -stcox-. There are requirements for Cox regression
too, so be careful.
Hope this helps
Svend
_______________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
*
* 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/
