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st: cttost error: not sorted

From   Eric Grodsky <>
Subject   st: cttost error: not sorted
Date   Sat, 19 Aug 2006 13:38:32 -0700

Hi all-

I have a file of count data that I have declared as such in Stata. When I try to convert these data to survival-time data I get an error r(5) not sorted. Anyone know what might cause this error and how I can get around it?

Here's the output:

. ctset
dataset name: c:\temp\temp.dta
time: term
no. fail: totxfer
no. lost: censored
no. enter: ssn_start
by: collegeid race2

. cttost
not sorted

. d

Contains data from c:\temp\temp.dta
obs: 18,969
vars: 14 19 Aug 2006 13:23
size: 569,070 (99.9% of memory free) (_dta has notes)
storage display value
variable name type format label variable label
collegeid str3 %9s
term byte %9.0g quarter matriculated
race2 byte %22.0g race2
ssn_start int %8.0g (sum) ssn_start
othuc int %8.0g (sum) othuc
eliteuc int %8.0g (sum) eliteuc
csu int %8.0g (sum) csu
totxfer int %9.0g (sum) totxfer
censored int %9.0g (sum) censored
totin int %9.0g
ttotxfer int %9.0g
totcens int %9.0g
available int %9.0g
first byte %9.0g
Sorted by: collegeid race2 term

Eric Grodsky
Assistant Professor
Department of Sociology
University of California- Davis

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