Frequencies for first 10,000 rows of prov5130 variable in pos2004 dataset : rn director | of nursing | - contract | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,993 99.93 99.93 .23 | 1 0.01 99.94 .46 | 1 0.01 99.95 .69 | 1 0.01 99.96 1.14 | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016