Frequencies for d_4_ipf_c13_90 variable in prds_hosp10_yr2010 dataset :

d_4_ipf_c13 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.09        0.09
          . |      2,321       99.91      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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