Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos2000 dataset :

       srv: |
    nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,156       81.56       81.56
          1 |      1,725       17.25       98.81
          2 |         14        0.14       98.95
          3 |        105        1.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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