Frequencies for first 10,000 rows of paypriv variable in namcs2010 dataset : private | insurance | Freq. Percent Cum. ------------+----------------------------------- no | 3,745 37.45 37.45 yes | 6,255 62.55 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016