Frequencies for iqi_national_scr variable in vwhqi_hosp_ahrq_national dataset :

IQI_NATIONA |
      L_SCR |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        2.00        2.00
         17 |          1        2.00        4.00
          2 |          1        2.00        6.00
       2444 |          1        2.00        8.00
       2626 |          1        2.00       10.00
        298 |          1        2.00       12.00
        398 |          1        2.00       14.00
        415 |          1        2.00       16.00
        624 |          1        2.00       18.00
          8 |          1        2.00       20.00
        857 |          1        2.00       22.00
        N/A |         39       78.00      100.00
------------+-----------------------------------
      Total |         50      100.00

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