Frequencies for first 10,000 rows of neontl_icu_srvc_cd variable in pos2016 dataset : Services: | Neonatal | ICU Code | Freq. Percent Cum. ------------+----------------------------------- . | 8,569 85.69 85.69 0 | 1,279 12.79 98.48 1 | 118 1.18 99.66 2 | 8 0.08 99.74 3 | 26 0.26 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 10 Jan 2017