Frequencies for first 10,000 rows of nrsrgcl_srvc_cd variable in pos2017 datase Services: | Neurosurgic | al Code | Freq. Percent Cum. ------------+----------------------------------- . | 8,569 85.69 85.69 0 | 1,225 12.25 97.94 1 | 142 1.42 99.36 2 | 27 0.27 99.63 3 | 37 0.37 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 9 Jan 2018