Frequencies for first 10,000 rows of tgs variable in namcs2012 dataset :

          Was blood for |
    triglycerides (TGS) |
 test drawn at visit or |
 within past 12 months? |      Freq.     Percent        Cum.
------------------------+-----------------------------------
                  Blank |        695        6.95        6.95
N/A, provider not asked |      2,900       29.00       35.95
                    Yes |      1,320       13.20       49.15
             None found |      5,085       50.85      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016