Frequencies for first 10,000 rows of prov2320 variable in pos2010 dataset : SPEC: | ORTHOPEDIC | Freq. Percent Cum. ------------+----------------------------------- | 9,632 96.32 96.32 N | 228 2.28 98.60 Y | 140 1.40 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016