Frequencies for first 10,000 rows of pps_blend variable in psfhos201401 dataset :

Federal PPS |
      Blend |
  Indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,444       94.44       94.44
          0 |        537        5.37       99.81
          1 |         14        0.14       99.95
          O |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018