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st: Metandi- diagnostic meta-analysis- error calculating cooks distance
From
Jannik Helweg-Larsen <[email protected]>
To
[email protected]
Subject
st: Metandi- diagnostic meta-analysis- error calculating cooks distance
Date
Tue, 4 Jan 2011 13:37:49 +0100
I get this error message when trying to check for particularly
influential observations using Cook's distance in the user-written "
metandi"-
(*! version 2.0 May 27, 2008 @ 15:44:22-*! Author: Roger Harbord,
University of Bristol- from ssc)
predict cook, cooksd
(Cook's distance may take a few seconds...)
can't get correct log-likelihood: -292.53257 should be -292.52883
something went wrong in comprob3
r(198);
this option is described in the help file " help metandi postestimation"
here are the details of the preceeding command:
metandi tp fp fn tn , gllamm force
Log likelihood = -292.52883 Number of studies = 58
------------------------------------------------------------------------------
| Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
Bivariate |
E(logitSe) | 3.193061 .3660945 2.475529 3.910593
E(logitSp) | 2.778581 .1697863 2.445806 3.111356
Var(logitSe) | 3.500023 1.119598 1.86976 6.551729
Var(logitSp) | 1.228446 .2987694 .7626685 1.978682
Corr(logits) | .125947 .1731381 -.2147968 .4393568
-------------+----------------------------------------------------------------
HSROC |
Lambda | 6.067654 .4230199 5.23855 6.896757
Theta | -.5761287 .2738926 -1.112948 -.039309
beta | -.5235099 .2009043 -2.61 0.009 -.917275 -.1297448
s2alpha | 4.669403 1.167692 2.860216 7.622965
s2theta | .906194 .2587435 .5178209 1.585853
-------------+----------------------------------------------------------------
Summary pt. |
Se | .9605723 .0138651 .9224084 .9803647
Sp | .9415074 .0093503 .9202542 .9573588
DOR | 392.1493 164.3919 172.4335 891.8286
LR+ | 16.42211 2.660188 11.95485 22.55867
LR- | .0418772 .0147754 .0209725 .083619
1/LR- | 23.87936 8.425298 11.95901 47.68152
------------------------------------------------------------------------------
Covariance between estimates of E(logitSe) & E(logitSp) .0064411
Using Stata 11 11.1 MP Win, fully updated
thanks
--
Jannik Helweg-Larsen M.D., DMSci
Department of Infectious Diseases, Section M5132
The Finsen Centre
Rigshospitalet
Copenhagen University Hospital
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