Frequencies for first 10,000 rows of pt_onst_rsdnt_sw variable in pos2002 dataset : srv: phys | ther-onsite | -residents | Freq. Percent Cum. ------------+----------------------------------- | 7,325 73.25 73.25 N | 261 2.61 75.86 Y | 2,414 24.14 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017