Frequencies for psi_4_surg_comp_samestr variable in vwhqi_hosp_ahrq_state dataset :

PSI_4_SURG_ |
  COMP_SAME |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |          1        1.79        1.79
         11 |          1        1.79        3.57
         12 |          1        1.79        5.36
        121 |          1        1.79        7.14
         13 |          1        1.79        8.93
        146 |          1        1.79       10.71
         15 |          1        1.79       12.50
        166 |          1        1.79       14.29
         19 |          4        7.14       21.43
          2 |          1        1.79       23.21
         22 |          1        1.79       25.00
         23 |          2        3.57       28.57
         24 |          2        3.57       32.14
          3 |          1        1.79       33.93
         31 |          2        3.57       37.50
         33 |          1        1.79       39.29
         35 |          2        3.57       42.86
         36 |          1        1.79       44.64
          4 |          1        1.79       46.43
         40 |          1        1.79       48.21
         41 |          2        3.57       51.79
         42 |          1        1.79       53.57
         43 |          1        1.79       55.36
         49 |          2        3.57       58.93
          5 |          1        1.79       60.71
         54 |          4        7.14       67.86
          6 |          2        3.57       71.43
          7 |          2        3.57       75.00
          8 |          3        5.36       80.36
         82 |          1        1.79       82.14
         87 |          1        1.79       83.93
          9 |          1        1.79       85.71
         90 |          1        1.79       87.50
         91 |          1        1.79       89.29
        N/A |          6       10.71      100.00
------------+-----------------------------------
      Total |         56      100.00

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