Frequencies for first 10,000 rows of gpmed4 variable in nhamcsed2009 dataset :

med 4 given |
in ed or rx |
         at |
  discharge |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |         50        0.50        0.50
         -7 |      8,465       84.65       85.15
          1 |        885        8.85       94.00
          2 |        535        5.35       99.35
          3 |         65        0.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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