Frequencies for last_rpt_sw variable in hcris2552_10_2015 dataset :

last report |
     switch |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      6,242       99.74       99.74
          X |          1        0.02       99.76
          Y |         15        0.24      100.00
------------+-----------------------------------
      Total |      6,258      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018