Frequencies for census variable in prds_hosp10_yr2011 dataset :

     census |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        142        2.31        2.31
          2 |        538        8.75       11.06
          3 |        884       14.37       25.43
          4 |        755       12.28       37.71
          5 |        865       14.07       51.77
          6 |        480        7.80       59.58
          7 |        973       15.82       75.40
          8 |        459        7.46       82.86
          9 |        605        9.84       92.70
         99 |        163        2.65       95.35
          . |        286        4.65      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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