Frequencies for first 10,000 rows of prov0905 variable in pos2001 dataset : special | care | beds-head | trauma | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,999 99.99 99.99 111 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016