Frequencies for first 10,000 rows of mdcl_scl_srvc_cd variable in pos2018 dataset : Services: | Medical | Social Code | Freq. Percent Cum. ------------+----------------------------------- . | 8,164 81.64 81.64 0 | 307 3.07 84.71 1 | 1,250 12.50 97.21 2 | 212 2.12 99.33 3 | 67 0.67 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Feb 2019