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

    Measure |
 Start Date |      Freq.     Percent        Cum.
------------+-----------------------------------
  01apr2010 |        530        5.30        5.30
  01jul2010 |      5,832       58.32       63.62
  01jul2011 |      3,108       31.08       94.70
  01jul2012 |        530        5.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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