Frequencies for first 10,000 rows of intrn_rsdnt_srvc_cd variable in pos2016 dataset :

  Services: |
Interns and |
  Residents |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,967       89.67       89.67
          0 |      1,019       10.19       99.86
          1 |          4        0.04       99.90
          2 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017