Frequencies for ndcdescription variable in nadacc20160727 dataset :

               NDC Description |      Freq.     Percent        Cum.
-------------------------------+-----------------------------------
   GLUCAGON 1 MG EMERGENCY KIT |          1        3.70        3.70
HUMALOG 100 UNITS/ML CARTRIDGE |          1        3.70        7.41
  HUMALOG 100 UNITS/ML KWIKPEN |          1        3.70       11.11
     HUMALOG 100 UNITS/ML VIAL |          2        7.41       18.52
  HUMALOG 200 UNITS/ML KWIKPEN |          1        3.70       22.22
     HUMALOG MIX 50-50 KWIKPEN |          1        3.70       25.93
        HUMALOG MIX 50-50 VIAL |          1        3.70       29.63
     HUMALOG MIX 75-25 KWIKPEN |          1        3.70       33.33
        HUMALOG MIX 75-25 VIAL |          1        3.70       37.04
            HUMULIN 70-30 VIAL |          2        7.41       44.44
         HUMULIN 70/30 KWIKPEN |          1        3.70       48.15
HUMULIN N 100 UNITS/ML KWIKPEN |          1        3.70       51.85
   HUMULIN N 100 UNITS/ML VIAL |          2        7.41       59.26
   HUMULIN R 100 UNITS/ML VIAL |          2        7.41       66.67
   HUMULIN R 500 UNITS/ML VIAL |          1        3.70       70.37
IPRAT-ALBUT 0.5-3(2.5) MG/3 ML |          1        3.70       74.07
  METHYLPHENIDATE ER 36 MG TAB |          1        3.70       77.78
     NAPRELAN CR 750 MG TABLET |          2        7.41       85.19
       PROLIA 60 MG/ML SYRINGE |          1        3.70       88.89
         SENSIPAR 30 MG TABLET |          1        3.70       92.59
         SENSIPAR 60 MG TABLET |          1        3.70       96.30
         SENSIPAR 90 MG TABLET |          1        3.70      100.00
-------------------------------+-----------------------------------
                         Total |         27      100.00

by Jean Roth , jroth@nber.org , 10 Feb 2018