Frequencies for psi_6_iat_ptx variable in vwhqi_hosp_ahrq dataset :

                       PSI_6_IAT_PTX |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
      Better than U.S. National Rate |         10        0.22        0.22
No Different than U.S. National Rate |      3,234       70.40       70.61
                       Not Available |      1,259       27.41       98.02
           Number of Cases Too Small |         14        0.30       98.32
       Worse than U.S. National Rate |         77        1.68      100.00
-------------------------------------+-----------------------------------
                               Total |      4,594      100.00

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