Frequencies for psi_90_safety_betterstr variable in vwhqi_hosp_ahrq_state dataset :

PSI_90_SAFETY |
      _BETTER |      Freq.     Percent        Cum.
--------------+-----------------------------------
            0 |         12       21.43       21.43
            1 |         12       21.43       42.86
           12 |          1        1.79       44.64
           14 |          1        1.79       46.43
           15 |          1        1.79       48.21
            2 |          8       14.29       62.50
            3 |          3        5.36       67.86
            4 |          1        1.79       69.64
            5 |          2        3.57       73.21
            6 |          3        5.36       78.57
            7 |          3        5.36       83.93
            8 |          2        3.57       87.50
            9 |          1        1.79       89.29
Not Available |          6       10.71      100.00
--------------+-----------------------------------
        Total |         56      100.00

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