Frequencies for first 10,000 rows of prov5165 variable in pos1998 dataset :

nurse aides |
  in trng - |
   contract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,995       99.95       99.95
        .36 |          1        0.01       99.96
         .4 |          1        0.01       99.97
        .91 |          1        0.01       99.98
       1.07 |          1        0.01       99.99
        6.8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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