Frequencies for first 10,000 rows of prov3810 variable in posclia1999 dataset :

   prov3810 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        338        3.38        3.38
          1 |      1,635       16.35       19.73
          2 |      4,452       44.52       64.25
          3 |        876        8.76       73.01
          4 |      2,021       20.21       93.22
          9 |        678        6.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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