Frequencies for first 10,000 rows of elgblty_sw variable in pos2011 dataset :

Eligibility |
     Switch |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          2 |          3        0.03        0.05
          N |      2,051       20.51       20.56
          Y |      7,944       79.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019