Frequencies for first 10,000 rows of clia_lab_classification_cd_3 variable in posclia2018 dataset :

CLIA_LAB_CL |
ASSIFICATIO |
     N_CD_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,670       66.70       66.70
          5 |          9        0.09       66.79
          . |      3,321       33.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019