Frequencies for first 10,000 rows of tc3s1 variable in h68f4 dataset : MULTUM | THERAPEUTIC | SUB-CLASS | #1 FOR TC3 | Freq. Percent Cum. ------------+----------------------------------- -1 | 9,966 99.66 99.66 67 | 32 0.32 99.98 136 | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Feb 2018