Frequencies for first 10,000 rows of ALCHL_DRUG_SRVC_CD variable in pos2011 dataset :

   Services |
  Provided: |
    Alcohol |
and/or Drug |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |      1,139       11.39       97.53
          1 |        165        1.65       99.18
          2 |         49        0.49       99.67
          3 |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019