Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos1992 dataset :

       srv: |
    nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,570       85.70       85.70
          1 |      1,391       13.91       99.61
          2 |         12        0.12       99.73
          3 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017