search for: intauterine

...survival , when I want to poccess a multistate survival analysis, I turn to R and the package 'mstate' and packege 'cmprsk'. When I come to publishing the article. Follow requirement of the magzine, the statistic is carry out in LTA package (which was said to be a authority in intauterine from WHO) . There we found difference in the results(incidence ratio or survival function) computed by the two software. I also come to the result from SAS, carry out survival analysis for each cause seperately using prod-limit method,. the result is closed to LTA rather than R. why ? is the result...