Frequencies for psi_90_safety_fstr variable in vwhqi_hosp_ahrq dataset :

PSI_90_SAFE |
       TY_F |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          3        0.07        0.07
          5 |      1,185       26.23       26.29
          . |      3,330       73.71      100.00
------------+-----------------------------------
      Total |      4,518      100.00

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