Frequencies for first 10,000 rows of p_cf3 variable in person dataset :

     Person |
    Related |
   Factor 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,948       99.48       99.48
          1 |          1        0.01       99.49
          2 |          3        0.03       99.52
          3 |          3        0.03       99.55
          4 |          5        0.05       99.60
         24 |          1        0.01       99.61
         28 |          1        0.01       99.62
         99 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016