Frequencies for s3_1_c2_1801 variable in prds_hosp10_yr2011 dataset :

s3_1_c2_180 |
          1 |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |          1        0.02        0.02
         18 |          1        0.02        0.03
         40 |          1        0.02        0.05
          . |      6,147       99.95      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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