Patterns of stent purchasing in a collaborative procurement organisation
McCabe, Joseph David James (2010) Patterns of stent purchasing in a collaborative procurement organisation. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk:80/record=b2580508~S1
Leveraging purchasing power through collaborative purchasing arrangements is
widely used to deliver efficiency savings in public procurement. The success of such
arrangements requires the purchasing behaviours of individual members of the
collaborative organisation to change in order to realise the benefits of lower prices.
However the actual purchasing behaviours of organisations within a collaborative
purchasing arrangement have not been widely researched.
The research uses a stationary stochastic model of buyer behaviour, the NBDDirichlet,
to describe and predict the purchasing behaviours of buyers of coronary and
ureteral stents in a collaborative purchasing organisation in the English National
Health Service. The three year analysis period is a period of major change for each
category, the result of supplier promotional activity in the ureteral stent case and
purchasing management activity in the case of the coronary stents.
Deviations between the observed patterns of behaviour and the model predictions
point to violations of the basic Dirichlet requirements of stationary markets and lack
of partitioning. In both the ureteral and coronary stent cases the research identifies a
segment of frequent purchasers whose behaviour differs from the rest of the
population. The impact of framework agreements in restricting the purchasing
repertoire of buyers is also identified as a deviation from typical purchasing patterns.
Both interventions result in changes to established loyalty patterns, whereby the initial
high observed levels of loyalty towards particular suppliers are replaced by a greater
willingness to purchase from alternative suppliers. The data analysis also provides
preliminary evidence for purchase deceleration as buyers defer purchases during a
negotiation period in anticipation of improved pricing.
|Item Type:||Thesis or Dissertation (PhD)|
|Subjects:||H Social Sciences > HF Commerce
R Medicine > R Medicine (General)
|Library of Congress Subject Headings (LCSH):||Purchasing power -- Econometric models, Consumer behavior -- Econometric models, Stents (Surgery) -- Purchasing, Great Britain. National Health Service -- Economic aspects|
|Official Date:||December 2010|
|Institution:||University of Warwick|
|Theses Department:||Warwick Business School|
|Supervisor(s)/Advisor:||Dacko, Scott G. ; Stern, Philip, 1954-|
|Extent:||xv, 332 leaves : ill., charts|
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