Frequencies for region variable in prds_hosp10_yr2015 dataset :

     region |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        233        3.72        3.72
          2 |        352        5.62        9.35
          3 |        462        7.38       16.73
          4 |      1,046       16.71       33.45
          5 |        993       15.87       49.31
          6 |        989       15.80       65.12
          7 |        491        7.85       72.96
          8 |        342        5.47       78.43
          9 |        553        8.84       87.26
         10 |        226        3.61       90.88
          . |        571        9.12      100.00
------------+-----------------------------------
      Total |      6,258      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018