Frequencies for first 10,000 rows of prov3315 variable in pos2010 dataset :

       SRV: |
NURSING-OFF |
SITE-RESIDE |
        NTS |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,641       76.41       76.41
          N |      2,232       22.32       98.73
          Y |        127        1.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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