Frequencies for first 10,000 rows of psi_12_postop_pulmemb_dvt_worse variable in vwhqi_hosp_ahrq_state dataset :

PSI_12_POST |
OP_PULMEMB_ |
  DVT_WORSE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,904       59.04       59.04
          2 |      4,096       40.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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