Frequencies for first 10,000 rows of offer13x variable in h84 dataset :

     HEALTH |
  INSURANCE |
 OFFERED AT |
   CMJ (ED) |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |        217        2.17        2.17
         -1 |      5,889       58.89       61.06
          1 |      2,518       25.18       86.24
          2 |      1,376       13.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Feb 2018