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

  Services: |
    Alcohol |
and/or Drug |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |      1,172       11.72       97.41
          1 |        169        1.69       99.10
          2 |         41        0.41       99.51
          3 |         49        0.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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