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From |
khan ali <economichust@yahoo.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: Dear Sir:Survival analysis(2nd Sept) |

Date |
Sat, 1 Sep 2007 20:36:04 -0700 (PDT) |

Dear Sir, Really kind suggestions solved my problem now only one this is remaining as to complete my analysis. 1.I can check the positive or negative duration dependence provide p is greater than one or less than one. 2.But more than this I am supposed(as per requirement) to report alpha(shape parameter)and beta(the estimated coeffeicient of the length of the run in AFT form) I am using the command streg , dist(weibul)time How about if I use the command? streg CURUN, dist(weibul)time How about if I convert the data in frequency form curun f 1 20 2 8 3 7 4 4 5 1 6 0 7 1 8 0 9 0 10 0 11 0 12 0 13 1 In the frequency form How do I can estimate the parameters? Thanks, Looking for your kind reply Khan,ALI <MAARTEN WROTE EARLIER> Given the dataset you have given me you should type: stset CRUN,failure(end) streg , dist(weibul) Notice that haven't specified any variable, this is because the dependent variable is already specified when you -stset- the data. If there is negative duration dependence the parameter p will be less than one, you can see that the confidence interval around p is entirely above 1, indicating that there is no duration dependence (if the Weibull is appropriate for this data). you can see the predicted hazard by typing: stcurv, hazard ____________________________________________________________________________________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting * * 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/

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