Frequencies for first 10,000 rows of prov0060 variable in pos1993 dataset : alcohol/dru | g unit | termination | date | Freq. Percent Cum. ------------+----------------------------------- | 9,904 99.04 99.04 840701 | 1 0.01 99.05 840802 | 1 0.01 99.06 840809 | 1 0.01 99.07 850101 | 1 0.01 99.08 850124 | 1 0.01 99.09 850208 | 1 0.01 99.10 850301 | 1 0.01 99.11 850630 | 1 0.01 99.12 850701 | 1 0.01 99.13 850901 | 1 0.01 99.14 851231 | 1 0.01 99.15 860416 | 1 0.01 99.16 860701 | 1 0.01 99.17 861001 | 1 0.01 99.18 870101 | 1 0.01 99.19 870630 | 1 0.01 99.20 870701 | 2 0.02 99.22 870801 | 1 0.01 99.23 870930 | 4 0.04 99.27 871001 | 3 0.03 99.30 871130 | 1 0.01 99.31 871226 | 1 0.01 99.32 871231 | 14 0.14 99.46 880101 | 1 0.01 99.47 880131 | 1 0.01 99.48 880331 | 3 0.03 99.51 880430 | 3 0.03 99.54 880531 | 10 0.10 99.64 880618 | 1 0.01 99.65 880626 | 1 0.01 99.66 880630 | 31 0.31 99.97 880831 | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016