Frequencies for psi_15_acc_lac_fstr variable in vwhqi_hosp_ahrq dataset :

PSI_15_ACC_ |
      LAC_F |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,309       73.22       73.22
          4 |          3        0.07       73.29
          5 |      1,186       26.24       99.54
          j |         21        0.46      100.00
------------+-----------------------------------
      Total |      4,519      100.00

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