Frequencies for measureenddatestr variable in hqi_national_hcahps dataset :

Measure End |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 09/30/2013 |         29      100.00      100.00
------------+-----------------------------------
      Total |         29      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016