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- Ken Stein, Matthew Dyer, Ruairidh Milne, Alison Round, Julie Ratcliffe, John Brazier
- Quality of Life Research
- 2009

Precision is a recognised requirement of patient-reported outcome measures but no previous studies of the precision of methods for obtaining health state values from the general public, based on specific health state descriptions or vignettes, have been carried out. The methodological requirements of policy makers internationally is driving growth in the… (More)

- MATTHEW J. DYER
- 2008

Let (W,S) be a Coxeter system, let S = I ∪ J be a partition of S such that no element of I is conjugate to an element of J , let J̃ be the set of WI -conjugates of elements of J and let W̃ be the subgroup of W generated by J̃ . We show that W = W̃ ⋊WI and that J̃ is the canonical set of Coxeter generators of the reflection subgroup W̃ of W . We also provide… (More)

- MATTHEW J. DYER
- 2012

The imaginary cone of a Kac-Moody Lie algebra is the convex hull of zero and the positive imaginary roots. This paper studies the imaginary cone for a class of root systems of general Coxeter groups W . It is shown that the imaginary cone of a reflection subgroup of W is contained in that of W , and that for irreducible infinite W of finite rank, the closed… (More)

- Gabriel Rogers, Ruth Garside, +5 authors Margaret Somerville
- PharmacoEconomics
- 2008

BACKGROUND
High-grade gliomas are aggressive brain tumours that are extremely challenging to treat effectively. The intracranial implantation of carmustine wafers (BCNU-W), which delivers chemotherapy directly to the affected area, may prolong survival in this population. However, no attention has yet been paid to the economic implications of BCNU-W in this… (More)

- Ken Stein, Matthew Dyer, +4 authors John Brazier
- Health and quality of life outcomes
- 2006

OBJECTIVES
To pilot using a panel of members of the public to provide preference data via the Internet
METHODS
A stratified random sample of members of the general public was recruited and familiarized with the standard gamble procedure using an Internet based tool. Health states were periodically presented in "sets" corresponding to different conditions,… (More)

- Matthew J Dyer, David MG Halpin, Ken Stein
- BMC family practice
- 2006

BACKGROUND
Ciclesonide is a new inhaled corticosteroids licensed for the prophylactic treatment of persistent asthma in adults. Currently beclomethasone dipropionate, budesonide and fluticasone propionate are the most commonly prescribed inhaled corticosteroids for the treatment of asthma but there has been no systematic review comparing the effectiveness… (More)

- MATTHEW J. DYER
- 2005

General facts of linear algebra are used to give proofs for the (wellknown) existence of analogs of Kazhdan-Lusztig polynomials corresponding to formal analogs of the Kazhdan-Lusztig involution, and of explicit formulae (some new, some known) for their coefficients in terms of coefficients of other natural families of polynomials (such as the corresponding… (More)

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