Frequencies for census variable in prds_hosp10_yr2010 dataset :

     census |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         32        1.38        1.38
          2 |        220        9.47       10.85
          3 |        313       13.47       24.32
          4 |        346       14.89       39.22
          5 |        318       13.69       52.91
          6 |        190        8.18       61.08
          7 |        355       15.28       76.37
          8 |        180        7.75       84.12
          9 |        266       11.45       95.57
         99 |         36        1.55       97.12
          . |         67        2.88      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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