Frequencies for first 10,000 rows of tc1s2 variable in h68f4 dataset :

     MULTUM |
THERAPEUTIC |
  SUB-CLASS |
 #2 FOR TC1 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -1 |      9,862       98.62       98.62
         12 |          8        0.08       98.70
         15 |         19        0.19       98.89
         16 |         13        0.13       99.02
         66 |         32        0.32       99.34
        120 |         38        0.38       99.72
        151 |         18        0.18       99.90
        249 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Feb 2018