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st: xtile generates missing values

From   "Brent Fulton" <>
To   <>
Subject   st: xtile generates missing values
Date   Tue, 24 Apr 2012 06:26:13 -0700

hi All,

I am using Stata 11, and the following command to generate percentiles
results in 1935 missing values out of 36,855 observations (or about 5%
missing). Neither totexp or wgt has missing values, so I am not sure what is
happening. Maybe missings are being generated at cut points? Is there a way
to avoid this?

xtile totexp_pct = totexp [pweight=wgt], n(20)

Note the same number missings is generated with the following command, so
doesn't seem like a cut point issue?

xtile totexp_pct2 = totexp [pweight=wgt], n(1000)

Thank you,
Brent Fulton
UC Berkeley

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