Frequencies for rx_ce_lti_rxhcc84 variable in rxcoeff dataset :

Rx_CE_LTI_R |
  XHCC84 -- |
   Systemic |
      Lupus |
Erythematos |
  us, Other |
 Connective |
     Tissue |
      Disor |      Freq.     Percent        Cum.
------------+-----------------------------------
       .168 |          1      100.00      100.00
------------+-----------------------------------
      Total |          1      100.00

by Jean Roth , jroth@nber.org , 7 Feb 2019