Contains data from two_marker_sim.dta
  obs:         4,000                          D.E. Morris - simulated
                                                continuous & ordinal marker
                                                dataset
 vars:             4                          9 Mar 2009 11:21
 size:        60,000 (99.6% of memory free)   (_dta has notes)
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              storage  display     value
variable name   type   format      label      variable label
--------------------------------------------------------------------------------
disease         byte   %9.0g       cclbl      disease status
marker          double %9.0g                  marker
severity        byte   %9.0g       sevlbl     disease stage
test            byte   %10.0g      testlbl    test type
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Sorted by:  

**********************
value labels for variables with numeric codes:

sevlbl:
           0 early
           1 late
cclbl:
           0 controls
           1 cases
testlbl:
           0 ordinal
           1 continuous

*********************
notes:

_dta:
  1.  Data reference:  Morris DE, Pepe MS, and Barlow WE.  Two equivalent
      frameworks for ROC analysis of ordinal ratings.  submitted.
  2.  two records per subject; one for each test type.
  3.  marker values are ordinal for test==0 and continuous for test==1