Frequencies for first 10,000 rows of measurestartdatestr variable in hqi_hosp_t

    Measure |
 Start Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 01/01/2012 |        189        1.89        1.89
 01/01/2014 |        219        2.19        4.08
 04/01/2013 |      9,184       91.84       95.92
 10/01/2013 |        408        4.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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