Frequencies for centerclassificationdate variable in enfrep20160406 dataset : Center | Classificat | ion Date | Freq. Percent Cum. ------------+----------------------------------- 03/25/2016 | 31 27.43 27.43 03/28/2016 | 8 7.08 34.51 03/29/2016 | 21 18.58 53.10 03/30/2016 | 7 6.19 59.29 03/31/2016 | 46 40.71 100.00 ------------+----------------------------------- Total | 113 100.00 by Jean Roth , jroth@nber.org , 21 Jul 2016