Frequencies for first 10,000 rows of clia_lab_classification_cd_1 variable in posclia2018 dataset : CLIA_LAB_CL | ASSIFICATIO | N_CD_1 | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,666 96.66 96.66 5 | 304 3.04 99.70 10 | 30 0.30 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Feb 2019