Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Midas


From   petretta@unina.it
To   statalist@hsphsun2.harvard.edu
Subject   st: Midas
Date   Thu, 05 May 2011 10:17:42 +0200

Dear all,

I use Stata/SE 11.2 for Windows (32-bit)- Born 30 Mar 2011
and I have installed the user written-command package midas from
http://fmwww.bc.edu/RePEc/bocode/m (module for meta-analytical integration of diagnostic
test accuracy studies)


When I run the midas command

midas tp fp fn tn

with this data:

tp	fp	fn	tn
17	27	1	47
18	3	2	11
21	5	1	13
44	3	22	15
17	13	0	12
56	28	1	16
23	16	0	14
79	9	23	26
24	1	6	17
28	21	3	24
66	38	12	63


at the end I get: Hessian has become unstable or asymmetric
r(504);

Can You help me please how to resolve this problem?

Thanks for your consideration



Mario Petretta
Dipartimento di Medicina Clinica Scienze Cardiovascolari e Immunologiche
Facoltà di Medicina e Chirurgia
Università di Napoli Federico II
081 - 7462233


*
*   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/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index