Frequencies for psi_11_postop_respfail_tostr variable in vwhqi_hosp_ahrq_state dataset :

PSI_11_POSTOP |
_RESPFAIL_TOO |
          FEW |      Freq.     Percent        Cum.
--------------+-----------------------------------
            0 |         14       25.00       25.00
            1 |         10       17.86       42.86
           10 |          1        1.79       44.64
           11 |          1        1.79       46.43
           14 |          1        1.79       48.21
           15 |          1        1.79       50.00
           18 |          1        1.79       51.79
            2 |          2        3.57       55.36
            3 |          5        8.93       64.29
            4 |          2        3.57       67.86
           42 |          1        1.79       69.64
            5 |          2        3.57       73.21
            6 |          3        5.36       78.57
            7 |          4        7.14       85.71
            9 |          2        3.57       89.29
Not Available |          6       10.71      100.00
--------------+-----------------------------------
        Total |         56      100.00

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