Frequencies for first 10,000 rows of p_sf1 variable in person dataset :

    Related |
factors (1) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,872       98.72       98.72
          5 |          6        0.06       98.78
          8 |          5        0.05       98.83
          9 |          2        0.02       98.85
         13 |          8        0.08       98.93
         18 |          4        0.04       98.97
         28 |          1        0.01       98.98
         32 |          2        0.02       99.00
         37 |         15        0.15       99.15
         56 |         24        0.24       99.39
         66 |          1        0.01       99.40
         82 |          1        0.01       99.41
         86 |          1        0.01       99.42
         88 |          5        0.05       99.47
         90 |          2        0.02       99.49
         91 |          1        0.01       99.50
         99 |         50        0.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016