Frequencies for first 10,000 rows of cl_srvc_onst_nrsdnt_sw variable in pos2007 dataset : srv: | clinical | lab-onsite- | non res | Freq. Percent Cum. ------------+----------------------------------- | 7,522 75.22 75.22 N | 2,421 24.21 99.43 Y | 57 0.57 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017