Frequencies for first 10,000 rows of clia_lab_classification_cd_10 variable in 

CLIA_LAB_CL |
ASSIFICATIO |
    N_CD_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,784       17.84       17.84
          5 |          1        0.01       17.85
          . |      8,215       82.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018