Frequencies for first 10,000 rows of therpr23 variable in nhamcsopd1999 dataset : other | ther/prev | service #2 | - 3 dgt | Freq. Percent Cum. ------------+----------------------------------- 000 | 9,925 99.25 99.25 352 | 1 0.01 99.26 452 | 1 0.01 99.27 573 | 1 0.01 99.28 893 | 1 0.01 99.29 933 | 1 0.01 99.30 935 | 66 0.66 99.96 939 | 1 0.01 99.97 944 | 1 0.01 99.98 954 | 1 0.01 99.99 978 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016