_dta:
  1.  icd2ccesrd12xw2011 set up by Jean Roth , jroth@nber.org , 6 Oct 2015
  2.  Source: 2011 Risk_Model_Software_2011/ESRD_2010_2011_Software/F1210F1Y.TXT

  obs:         2,910                          
 vars:             6                          6 Oct 2015 13:04
 size:        69,840                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
----------------------------------------------------------------------------------------------------------------------------------------------------------------
icd             str5    %9s                   International Classification of Diseases (ICD)
cc              str3    %9s                   Condition Categories (CCs)
icdvers         float   %9.0g                 ICD Version
modtype         str4    %9s                   Model Type
modvers         float   %9.0g                 Model Version
year            float   %9.0g                 Year
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Sorted by: icd  year  cc