Frequencies for first 10,000 rows of incshx variable in nhamcsed2014 dataset :

In the last |
 two years, |
has your ED |
  increased |
 the number |
of standard |
  treatment |
         sp |      Freq.     Percent        Cum.
------------+-----------------------------------
    Unknown |      1,064       10.64       10.64
        Yes |      1,656       16.56       27.20
         No |      7,280       72.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017