Frequencies for first 10,000 rows of clia_lab_classification_cd_6 variable in p CLIA_LAB_CL | ASSIFICATIO | N_CD_6 | Freq. Percent Cum. ------------+----------------------------------- 0 | 3,657 36.57 36.57 5 | 3 0.03 36.60 . | 6,340 63.40 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016