Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos2015 dataset 

  Services: |
    Nursing |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,155       81.55       81.55
          1 |      1,775       17.75       99.30
          2 |          6        0.06       99.36
          3 |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016