Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
From | Yuval Arbel <yuval.arbel@gmail.com> |
To | statalist <statalist@hsphsun2.harvard.edu> |
Subject | st: Re: Interpretation of the Coefficients obtained via -stcox- |
Date | Sat, 8 Sep 2012 23:26:47 -0700 |
Dear statalisters, I appreciate very much your answer to this question. I'm attaching below the estimation results of -stcox-. Do they imply that if we increase mean_reduct by 1 unit the hazard to survival increase by 3.83 percent? . stcox mean_reduct reductcurrent_mean_reduct rent_net8 diff_stdmadadarea permanentincomeestimate82 diff_mortgage appreciation if nachut==0 & nachutspouse==0 & diff_per>=-5 & diff_per<=5,nohr failure _d: fail == 1 analysis time _t: time_index id: appt Iteration 0: log likelihood = -56991.691 Iteration 1: log likelihood = -54168.973 Iteration 2: log likelihood = -53930.527 Iteration 3: log likelihood = -53916.083 Iteration 4: log likelihood = -53915.926 Iteration 5: log likelihood = -53915.926 Refining estimates: Iteration 0: log likelihood = -53915.926 Cox regression -- Breslow method for ties No. of subjects = 7191 Number of obs = 324499 No. of failures = 7191 Time at risk = 351446 LR chi2(7) = 6151.53 Log likelihood = -53915.926 Prob > chi2 = 0.0000 ------------------------------------------------------------------------------ _t | Coef. Std. Err. z P>|z| [95% Conf. Interval] -------------+---------------------------------------------------------------- mean_reduct | .0382773 .0006943 55.13 0.000 .0369165 .0396382 reductcurr~t | .0282488 .0007893 35.79 0.000 .0267018 .0297958 rent_net8 | .0018389 .0001947 9.45 0.000 .0014573 .0022204 diff_stdma~a | -.5076186 .0579597 -8.76 0.000 -.6212176 -.3940197 permanent~82 | -.0005113 .0000862 -5.93 0.000 -.0006803 -.0003423 diff_mortg~e | -7.715171 1.23864 -6.23 0.000 -10.14286 -5.287481 appreciation | 10.94379 3.632834 3.01 0.003 3.823562 18.06401 ------------------------------------------------------------------------------ On Tue, Aug 21, 2012 at 1:14 AM, Yuval Arbel <yuval.arbel@gmail.com> wrote: > Dear Statalisters, > > According to stata manual the command -stcox- estimates the following model: > > h(t) = h0(t) exp( b1x1 +... + bkxk) > > where h(t) is the hazard to survival. > > Can I infer from this specification that bk in its original form > (nohr) measures the percent change of the hazard to survive with > respect to xk? > > > -- > Dr. Yuval Arbel > School of Business > Carmel Academic Center > 4 Shaar Palmer Street, > Haifa 33031, Israel > e-mail1: yuval.arbel@carmel.ac.il > e-mail2: yuval.arbel@gmail.com -- Dr. Yuval Arbel School of Business Carmel Academic Center 4 Shaar Palmer Street, Haifa 33031, Israel e-mail1: yuval.arbel@carmel.ac.il e-mail2: yuval.arbel@gmail.com * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/