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st: incidence rates
From
ipianah nic <[email protected]>
To
statalist <[email protected]>
Subject
st: incidence rates
Date
Fri, 18 Feb 2011 10:50:07 +0000
Dear statalister
am investigating timeto peripheral neuropathy.I have stset my data as
stset time,fail(perntox==1) id(studyno) and included stptime,
per(1200)by (time)-where time is baseline,3,6,9 and 12 month and i
have questionable values for incidence rates as below.
time | person-time failures rate [95% Conf. Interval]
-----------+-----------------------------------------------------------
3 | 2.9999999 1 33.333334 4.69545 236.6357
6 | 210 35 16.666667 11.96656 23.21283
9 | 81.000003 9 11.111111 5.781275 21.35459
12 | 1860 8 .43010754 .2150958 .8600471
-----------+-----------------------------------------------------------
total | 2154 53 2.4605386 1.879787 3.220711
have I missed anything in stsetting my data.
nic
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