Frequencies for national variable in vwhqi_hosp_ahrq_national dataset :

   NATIONAL |      Freq.     Percent        Cum.
------------+-----------------------------------
       0.39 |          1        2.00        2.00
      10.21 |          1        2.00        4.00
     115.70 |          1        2.00        6.00
       2.07 |          1        2.00        8.00
       2.16 |          1        2.00       10.00
       2.95 |          1        2.00       12.00
       4.42 |          1        2.00       14.00
       5.88 |          1        2.00       16.00
        N/A |         42       84.00      100.00
------------+-----------------------------------
      Total |         50      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016