Frequencies for cnd_hcc122 variable in hcccoefn dataset : Proliferati | ve Diabetic | Retinopathy | and | Vitreous | Hemorrhage | Freq. Percent Cum. ------------+----------------------------------- .253 | 1 100.00 100.00 ------------+----------------------------------- Total | 1 100.00 by Jean Roth , jroth@nber.org , 7 Feb 2019