Frequencies for first 10,000 rows of clia_lab_classification_cd_4 variable in p CLIA_LAB_CL | ASSIFICATIO | N_CD_4 | Freq. Percent Cum. ------------+----------------------------------- 0 | 5,630 56.30 56.30 5 | 4 0.04 56.34 . | 4,366 43.66 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 9 Jan 2018