Frequencies for first 10,000 rows of chol variable in namcs2014 dataset :

    Was blood for total |
 cholesterol test drawn |
at visit or within past |
             12 months? |      Freq.     Percent        Cum.
------------------------+-----------------------------------
                  Blank |        549        5.49        5.49
N/A, provider not asked |      2,703       27.03       32.52
                    Yes |      1,826       18.26       50.78
             None found |      4,922       49.22      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017