Frequencies for first 10,000 rows of prov0060 variable in pos1996 dataset : alcohol/dru | g unit | termination | date | Freq. Percent Cum. ------------+----------------------------------- | 9,904 99.04 99.04 19840701 | 1 0.01 99.05 19840802 | 1 0.01 99.06 19840809 | 1 0.01 99.07 19850101 | 1 0.01 99.08 19850124 | 1 0.01 99.09 19850208 | 1 0.01 99.10 19850301 | 1 0.01 99.11 19850630 | 1 0.01 99.12 19850701 | 1 0.01 99.13 19850901 | 1 0.01 99.14 19851231 | 1 0.01 99.15 19860416 | 1 0.01 99.16 19860701 | 1 0.01 99.17 19861001 | 1 0.01 99.18 19870101 | 1 0.01 99.19 19870630 | 1 0.01 99.20 19870701 | 2 0.02 99.22 19870801 | 1 0.01 99.23 19870930 | 4 0.04 99.27 19871001 | 3 0.03 99.30 19871130 | 1 0.01 99.31 19871226 | 1 0.01 99.32 19871231 | 14 0.14 99.46 19880101 | 1 0.01 99.47 19880131 | 1 0.01 99.48 19880331 | 3 0.03 99.51 19880430 | 3 0.03 99.54 19880531 | 10 0.10 99.64 19880618 | 1 0.01 99.65 19880626 | 1 0.01 99.66 19880630 | 31 0.31 99.97 19880831 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017