Frequencies for rx_ce_lownoaged_rxhcc243 variable in rxcoeff dataset : rx_ce_lowno | aged_rxhcc2 | 43 -- | open-angle | glaucoma | Freq. Percent Cum. ------------+----------------------------------- .271 | 1 100.00 100.00 ------------+----------------------------------- Total | 1 100.00 by Jean Roth , jroth@nber.org , 8 Feb 2018