Frequencies for rx_ce_lti_rxhcc72 variable in rxcoeff dataset :

 rx_ce_lti_ |
  -- spinal |
       cord |
  disorders |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1      100.00      100.00
------------+-----------------------------------
      Total |          1      100.00

by Jean Roth , jroth@nber.org , 2 May 2016