Frequencies for first 10,000 rows of stpdif13 variable in h84 dataset : DIFFICULTY | WALKING UP | 10 STEPS | Freq. Percent Cum. ------------+----------------------------------- -8 | 3 0.03 0.03 -1 | 8,973 89.73 89.76 1 | 406 4.06 93.82 2 | 315 3.15 96.97 3 | 182 1.82 98.79 4 | 94 0.94 99.73 5 | 27 0.27 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Feb 2018