Frequencies for first 10,000 rows of prov2250 variable in pos2002 dataset :

       srv: |
    nursing |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,041       80.41       80.41
          1 |      1,824       18.24       98.65
          2 |         13        0.13       98.78
          3 |        122        1.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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