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

          Was blood for |
    triglycerides (TGS) |
 test drawn at visit or |
 within past 12 months? |      Freq.     Percent        Cum.
------------------------+-----------------------------------
                  Blank |        553        5.53        5.53
N/A, provider not asked |      2,703       27.03       32.56
                    Yes |      1,771       17.71       50.27
             None found |      4,973       49.73      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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