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Abstract

Standard approaches to modelling outcomes commonly include a range of predictors such as age, sex and co-morbidities. However, there is growing evidence that quality-of-life (QoL) is also an important predictor of
mortality.

Whilst the effects of standard risk factors have been adequately captured to describe mortality in most models, the omission of QoL indicates the assumption of full independence between QoL and life expectancy (LE). This omission could give rise to systematic bias when measuring quality-adjusted life years (QALYs).

Using data from a registry cohort of patients undergoing total knee replacement (TKR), potential correlations between baseline utility, change in utility and survival are explored using parametric survival models. Outcomes such as LE, QALYs, and incremental cost-effectiveness ratios (ICERs) were calculated and compared.

Forthcoming events

Ethox and WEH Seminar - Making Breathlessness Visible: a medical humanities approach

Wednesday, 24 July 2019, 11am to 12.30pm @ Seminar room 0, BDI, Old Road Campus, OX3 7LF

Designing and Running Streamlined Randomized Trials

Monday, 13 January 2020 to Tuesday, 14 January 2020, 9.30am - 5pm