Frequencies for chroniclungdisorders variable in snp2014 dataset : Chronic | Lung | Disorders | Freq. Percent Cum. ------------+----------------------------------- | 7,973 99.15 99.15 * | 68 0.85 100.00 ------------+----------------------------------- Total | 8,041 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016