Frequencies for first 10,000 rows of nrsng_srvc_cd variable in pos1996 dataset :

       srv: |
    nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,165       81.65       81.65
          1 |      1,747       17.47       99.12
          2 |         14        0.14       99.26
          3 |         74        0.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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