Frequencies for first 10,000 rows of edprn variable in nhamcsed1994 dataset :

  return to |
 ed, p.r.n. |
(as needed) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,311       73.11       73.11
          1 |      2,689       26.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016