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st: ameans and add(#)

From   Garry Anderson <>
Subject   st: ameans and add(#)
Date   Mon, 07 May 2007 19:26:41 +1000


If one includes the add(#) option to -ameans- so that # is added to a variable and then ameans calculates the geometric mean and its 95%CI, should one subtract # (or some other value) from the geometric mean and 95%CI ?

If the lower limit of the 95%CI is below zero after subtracting #, the lower limit would presumably be truncated to zero.

Kind regards, Garry

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