Frequencies for psi_12_postop_pulmemb_dvt_wstr variable in vwhqi_hosp_ahrq_state dataset :

PSI_12_POST |
OP_PULMEMB_ |
  DVT_WORSE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         12       21.43       21.43
          1 |         17       30.36       51.79
         10 |          1        1.79       53.57
         12 |          1        1.79       55.36
         13 |          1        1.79       57.14
         16 |          3        5.36       62.50
         19 |          1        1.79       64.29
          2 |          6       10.71       75.00
          3 |          3        5.36       80.36
          4 |          1        1.79       82.14
          5 |          1        1.79       83.93
          6 |          2        3.57       87.50
          8 |          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