st: Probable bug in -ci-

[Fred Wolfe <fwolfe@arthritis-research.org>]

There appears to be a bug in -ci- when the by option AND the total option 
is used, as shown below.

. ci firstcataract if lpuse == 1,exposure(duration)

                                                         -- Poisson  Exact --
    Variable |   Exposure        Mean    Std. Err.       [95% Conf. Interval]
-------------+---------------------------------------------------------------
firstcatar~t |      46209    .0077907    .0004106        .0070066    .0086385




-> sex = Female

                                                         -- Poisson  Exact --
    Variable |   Exposure        Mean    Std. Err.       [95% Conf. Interval]
-------------+---------------------------------------------------------------
    cataract |      10369    .0058829    .0007532        .0044999    .0075568

-> sex = Male

                                                         -- Poisson  Exact --
    Variable |   Exposure        Mean    Std. Err.       [95% Conf. Interval]
-------------+---------------------------------------------------------------
    cataract |      35840    .0083426    .0004825        .0074237    .0093439



. bys sex: ci cataract if lpuse == 1,exposure(duration)  total

-> sex = Female

                                                         -- Poisson  Exact --
    Variable |   Exposure        Mean    Std. Err.       [95% Conf. Interval]
-------------+---------------------------------------------------------------
    cataract |      10369    .0058829    .0007532        .0044999    .0075568


-> sex = Male

                                                         -- Poisson  Exact --
    Variable |   Exposure        Mean    Std. Err.       [95% Conf. Interval]
-------------+---------------------------------------------------------------
    cataract |      35840    .0083426    .0004825        .0074237    .0093439

_______________________________________________________________________________
-> Total
time-series operators not allowed
in option exposure()
r(101);


Fred Wolfe


Fred Wolfe
National Data Bank for Rheumatic Diseases
Wichita, Kansas
Tel (316) 263-2125     Fax (316) 263-0761
fwolfe@arthritis-research.org


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