Frequencies for census variable in prds_hosp10_yr2013 dataset :

     census |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        140        2.24        2.24
          2 |        539        8.63       10.87
          3 |        876       14.02       24.89
          4 |        756       12.10       36.99
          5 |        849       13.59       50.58
          6 |        471        7.54       58.11
          7 |        960       15.36       73.48
          8 |        479        7.67       81.15
          9 |        597        9.56       90.70
         99 |        172        2.75       93.45
          . |        409        6.55      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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