Frequencies for first 10,000 rows of privins variable in namcs1993 dataset : expected | source of | payment-pri | vate/comm | insur | Freq. Percent Cum. ------------+----------------------------------- 0 | 6,417 64.17 64.17 1 | 3,583 35.83 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016