Frequencies for first 10,000 rows of tgs variable in namcs2011 dataset :

 Was triglycerides drawn within 12 |
                  months of visit? |      Freq.     Percent        Cum.
-----------------------------------+-----------------------------------
                             Blank |      1,585       15.85       15.85
Not applicable, provider not asked |        933        9.33       25.18
                               Yes |      2,092       20.92       46.10
       None found within 12 months |      5,390       53.90      100.00
-----------------------------------+-----------------------------------
                             Total |     10,000      100.00

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