Frequencies for measurestartdate variable in hqi_state_payment dataset :

    Measure |
 start date |      Freq.     Percent        Cum.
------------+-----------------------------------
  01jul2012 |        168      100.00      100.00
------------+-----------------------------------
      Total |        168      100.00

by Jean Roth , jroth@nber.org , 15 Nov 2016