Frequencies for first 10,000 rows of pct020a019 variable in sf12010860us37 dataset : Military | treatment | facilities | with | assigned | patients | (404) | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,997 99.97 99.97 21 | 1 0.01 99.98 24 | 1 0.01 99.99 38 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017