Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos2005 dataset :

       srv: |
    nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,618       76.18       76.18
          0 |        135        1.35       77.53
          1 |      2,099       20.99       98.52
          2 |         13        0.13       98.65
          3 |        135        1.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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