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

Participati |
on Medicare |
   OPT / SP |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        354        3.54        3.54
          N |      9,641       96.41       99.95
          Y |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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