Frequencies for first 10,000 rows of mednurse variable in nhamcsopd1997 dataset :

medical/nur |
       sing |
  assistant |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,992       89.92       89.92
          1 |      1,008       10.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016