Frequencies for adr_vndr_cd variable in hospc_rpt1984_99_2004 dataset :

  automated |
desk review |
vendor code |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |         20        1.43        1.43
          3 |         44        3.15        4.58
          4 |        139        9.94       14.52
          A |      1,190       85.12       99.64
          B |          3        0.21       99.86
          C |          2        0.14      100.00
------------+-----------------------------------
      Total |      1,398      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018