Mark Christopher Perry

6 Questions 29 Answers 0 Followers

Questions related from Mark Christopher Perry

How are Network Meta-analyses performed with Gibbs sampling?

I understand how Gibbs sampling works to allow estimations of joint probability distributions in a simple sense. For example, using a simple two dimensional example (A and B are two different...

25 April 2023 6,204 3 View

I am a bit confused by propensity score matching. What is the advantage of using propensity score matching over standard post-hoc logistic regression?

Given that propensity scores are often derived via logistic regression, why bother? Why not just do a good old fashioned logistic regression analysis in the first place to adjust for confounding?...

06 March 2018 5,329 7 View

Do I include the baseline value of the outcome variable as one of the repeated outcome measures in a Generalised Estimating Equation analysis?

I am doing a Generalised Linear Model analysis (GEE) and need some advice. I am comparing two well-randomised groups for an outcome measured at 5 follow up points, and the only real difference...

28 November 2015 5,728 4 View

Should 'test and treat' studies comparing assessment methods always be RCTs?

Studies comparing interventions can sometimes be studied using a non-randomised design. Though imperfect, the inevitable group differences in prognostic characteristics from a non-randomised...

18 January 2014 3,629 9 View

In the light of the CLT is it sensible to assess whether parametric statistics should be used by just looking at the distribution in the sample?

The distribution of values in the samples should provide a good estimate of the population distribution. If this is skewed we are often told to avoid using parametric statistics. However, doesn't...

08 May 2013 3,539 13 View

Is there sense in using inferential statistics to assess baseline comparability in an RCT?

Inferential statistics are essential for estimating likely population effects from sample data. But are they useful for comparing groups for baseline comparability?

26 April 2013 3,514 5 View