October 11th 2006, 2pm to 5pm
MANDEC (Manchester Dental Education Centre),
Higher Cambridge Street
Manchester
(tea will be served about mid-afternoon)
Joint meeting with Manchester University's Biostats Group
Theme: "Screening for identification, efficiency and prediction"
NICOLE AUGUSTIN
Incorporating model selection uncertainty into prognostic models for
survival data
For survival data we discuss two approaches for accounting for model
selection uncertainty with the main emphasis on variable selection in a
proportional hazard Cox model. The first approach is Bayesian model
averaging. The second approach carries out model averaging with weights
estimated from bootstrap resampling.
FIONA MATTHEWS
Estimating measures of disease incidence from longitudinal two-phase
designs in the presence of missing data, do we lose more than we gain?
Two phase designs are common to estimate disease prevalence, but less is
known about their use for longitudinal estimates. This talk will discuss
the issues surrounding estimation of disease from such longitudinal
designs. The modelling of the missing data due to study design, drop-out
and mortality will be discussed.
ROSEANNE MCNAMEE
Efficient designs for evaluation of screening tests
Evaluation of screening tests from 2-phase cohort designs seems attractive
as the gold standard need only be applied to random samples of subjects
and formulae for the optimal design of such studies exist. The statistical
efficiency of these and other 2-phase designs, eg for prevalence,
regression coefficients, will be questioned.
All are welcome.
Best wishes
John
John Logsdon
Secretary
RSS Manchester Local Group
[log in to unmask]
http://www.rss-manchester.org
0161 445 4951
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