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

    Measure |
 Start Date |      Freq.     Percent        Cum.
------------+-----------------------------------
  01jan2012 |        189        1.89        1.89
  01apr2013 |      9,184       91.84       93.73
  01oct2013 |        408        4.08       97.81
  01jan2014 |        219        2.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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