Frequencies for first 10,000 rows of psi_12_postop_pulmemb_dvt_better variable in vwhqi_hosp_ahrq_state dataset :

PSI_12_POST |
OP_PULMEMB_ |
 DVT_BETTER |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,096       40.96       40.96
          5 |      4,096       40.96       81.92
          7 |      1,808       18.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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