hi
i have a paper which quotes the following
number (per 100000) 620
lower limit 497
upper limit 1006
relative error 0.17
this interval is not symettrical
i have been trying to reproduce the upper and lower limits but have
failed - i presume that this may be poisson but not sure
can anyone sufggest how give the above information i can reproduce
the above interval
in addition
i have 3 estimates (3 different point in time) do not know 'n' on
which the estimates were produced except that they are for example
500 deaths per 100000 livebirths - i am trying to work out upper
and lower interval around the thee estimates whci are 620, 520 and
1120
any help on this would be greatly appreciated - if there is a
formaula that i can apply that would be most valuable
regards
ann
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ann e fitzmaurice
medical statistician
dugald baird centre
department of obs and gynae
university of aberdeen
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tel 01224 553876 (direct)
fax 01224 404925
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