Ordering systems come in two basic flavours: push and pull, plus any number of hybrid systems. All have pros and cons, and each is most appropriate for a specific situation. In this first article in a miniseries on push and pull systems, I will discuss the basics: what exactly are pull and push systems and when would you use either.
Push versus pull
In the push model, “higher”, central levels decide on supply allocation for “lower”, local levels; these decisions are typically based on supply at hand and in the pipeline, and on calculated expected consumption – the latter often approximated, based on (in the case of medical supplies) patient numbers or population data. In the pull model, “lower” levels decide on the necessary supplies for the next supply period, which are then either procured independently or obtained/ordered from the “higher” level.
The basic difference between the two models is the responsibility for timely, complete, and accurate initiation of distribution: in the push model this is the “higher” level, in the pull model the “lower” level. Click here to read more about push and pull systems
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