Frequencies for s3_1_c4_9 variable in prds_hosp10_yr2017 dataset :

   Coronary |
  Care Unit |
    S300001 |
      00900 |
      00400 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1527 |          1        0.03        0.03
       5834 |          1        0.03        0.05
    11640.6 |          1        0.03        0.08
      17408 |          1        0.03        0.11
          . |      3,745       99.89      100.00
------------+-----------------------------------
      Total |      3,749      100.00

by Jean Roth , jroth@nber.org , 26 Oct 2018