Sections: WHO Model List of Essential Drugs
Over the years comments have been received on the way the WHO List of Essential Drugs is structured with the suggestion that it could be more logical and user-friendly. The current structure and two possible alternatives are presented. They are intended to form a basis for discussion and modification at the Expert Committee.
1. Current section arrangement, Technical Report Series 895 (2000)
3. Anatomical, Therapeutic, Chemical (ATC),
Model List according to latest ATC classification (2002) (classified by two levels only),
4. WHO Model Formulary (variant on the WHO Technical Report Series)
Possible section structures
1. Technical Report Series 895 (2000)
(EDM/PAR, 14 March 2002)
The current Essential Drug List is arranged in 27 sections and is further subdivided into 76 second level subsections, 23 third and four 4th level subsections.
The Technical Report Series (TRS) Structure has been used in:
2. Secretariat Proposal (2002)
A new arrangement is a proposed using 32 clinical grouping without other levels, subgroups or subsections.
3. Anatomical, Therapeutic, Chemical (ATC)
The ATC classification has been developed by the WHO Collaborating Centre for Drug Statistics in Oslo, Norway. The full system classifies drugs into groups at five different levels resulting in some cases in a 7 digit/letter code. There are 14 first level groups and 99 second level groups. The example given uses only the first and second levels. Essential drugs fall into 66 groups.
4. WHO Model Formulary
The WHO Model Formulary uses the same system of sections as the Technical Report series, sometimes named differently. There is more extensive use of subsections and there is much cross referencing in the text.
The Secretariat is inclined to favour some form of example 2 recognizing that all systems have advantages and disadvantages.
Advantages and disadvantages of three possible EDL structures (1, 2 and 3)
1) Technical Report Series sections
2) Secretariat proposal
3) ATC classification sections
See also the Essential Medicines Library