Frequencies for psi_12_postop_pulmemb_dvt_tostr variable in vwhqi_hosp_ahrq_sta

PSI_12_POSTOP |
_PULMEMB_DVT_ |
       TOOFEW |      Freq.     Percent        Cum.
--------------+-----------------------------------
            0 |         20       35.71       35.71
            1 |         10       17.86       53.57
           11 |          1        1.79       55.36
            2 |          7       12.50       67.86
           23 |          1        1.79       69.64
            3 |          2        3.57       73.21
            4 |          2        3.57       76.79
            5 |          5        8.93       85.71
            7 |          1        1.79       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