Frequencies for first 10,000 rows of skltn_rec_sw variable in posclia2012 datas Skeleton | Record | Switch | Freq. Percent Cum. ------------+----------------------------------- N | 959 9.59 9.59 Y | 9,041 90.41 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016