Frequencies for first 10,000 rows of xtrcrprl_shck_lthtrptr_srvc_cd variable in

   Services |
  Provided: |
Extracorpor |
  eal Shock |
       Wave |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,606       86.06       86.06
          0 |      1,255       12.55       98.61
          1 |         31        0.31       98.92
          2 |         68        0.68       99.60
          3 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016