Frequencies for psi_11_postop_respfail_worsestr variable in vwhqi_hosp_ahrq_state dataset :

PSI_11_POST |
OP_RESPFAIL |
     _WORSE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         15       26.79       26.79
          1 |          5        8.93       35.71
         12 |          3        5.36       41.07
         14 |          3        5.36       46.43
         16 |          1        1.79       48.21
          2 |          2        3.57       51.79
         21 |          1        1.79       53.57
         25 |          1        1.79       55.36
          3 |          5        8.93       64.29
          4 |          3        5.36       69.64
          5 |          1        1.79       71.43
          6 |          2        3.57       75.00
          7 |          4        7.14       82.14
          8 |          4        7.14       89.29
        N/A |          6       10.71      100.00
------------+-----------------------------------
      Total |         56      100.00

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