Frequencies for psi_12_postop_pulmemb_dvt_better variable in vwhqi_hosp_ahrq_state dataset :

PSI_12_POST |
OP_PULMEMB_ |
 DVT_BETTER |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         16       28.57       28.57
          1 |         16       28.57       57.14
          2 |          5        8.93       66.07
          3 |          6       10.71       76.79
          4 |          4        7.14       83.93
          5 |          1        1.79       85.71
          8 |          1        1.79       87.50
         10 |          1        1.79       89.29
          . |          6       10.71      100.00
------------+-----------------------------------
      Total |         56      100.00

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