Frequencies for first 10,000 rows of intrn_rsdnt_srvc_cd variable in pos2017 da

  Services: |
Interns and |
  Residents |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      9,003       90.03       90.03
          0 |        986        9.86       99.89
          1 |          2        0.02       99.91
          2 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018