Frequencies for first 10,000 rows of measurestartdate variable in hqi_hosp_time

    Measure |
 Start Date |      Freq.     Percent        Cum.
------------+-----------------------------------
  01jan2012 |        188        1.88        1.88
  01apr2013 |      9,185       91.85       93.73
  01oct2013 |        409        4.09       97.82
  01jan2014 |        218        2.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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