Frequencies for first 10,000 rows of clia_lab_classification_cd_2 variable in posclia2018 dataset : CLIA_LAB_CL | ASSIFICATIO | N_CD_2 | Freq. Percent Cum. ------------+----------------------------------- 0 | 8,069 80.69 80.69 5 | 44 0.44 81.13 10 | 1 0.01 81.14 . | 1,886 18.86 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Feb 2019