Frequencies for first 10,000 rows of incshx variable in nhamcsed2007 dataset :

  in last 2 |
 years, has |
         ed |
increased # |
of standard |
  treatment |
    spaces? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        103        1.03        1.03
    unknown |        190        1.90        2.93
        yes |      2,601       26.01       28.94
         no |      7,106       71.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016