.-
help for ^xtile2^
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^xtile2^ creates a new variable that categorizes exp by its subgroup
        quantiles.
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  ^xtile2^ newvar ^=^ exp [weight] [^if^ exp] [^in^ range]
    ^,^ by(varlist) [ ^n^quantiles^(^#^)^  ^alt^def ]


Options
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  ^nquantiles(^#^)^ specifies the number of quantiles.    
  ^by(varlist)^ specifies subgroups within which the category will be
generated.

Examples
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  . ^xtile2 quart = bp if age>=25, nq(4) by(sex race)^ 
  

Also see
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  Manual:  ^[R] pctile^

Author
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  Zhiqiang Wang
  Menzies School of Health Research
  Darwin, Australia
  wang@@menzies.su.edu.au
  
