Frequencies for first 10,000 rows of fspedct variable in familyxx2008 dataset :

 # children |
  in family |
    receive |
    special |
education/e |
         is |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,133       31.33       31.33
          1 |        324        3.24       34.57
          2 |         48        0.48       35.05
          3 |          6        0.06       35.11
          4 |          1        0.01       35.12
          . |      6,488       64.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 May 2016