Frequencies for psi_15_acc_lac_f variable in vwhqi_hosp_ahrq dataset :

PSI_15_ACC_ |
      LAC_F |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,441       71.24       71.24
          4 |          3        0.06       71.30
          5 |      1,370       28.36       99.67
          j |         16        0.33      100.00
------------+-----------------------------------
      Total |      4,830      100.00

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