FUN For Fit

Wed, 01 Jan 2025 00:00:00 +0000

FUN For Fit is an R Shiny tool for evaluating the practical significance of item misfit in psychological and educational tests — methods central to Clinical Outcome Assessment (COA) validation.

Features

Rasch model (1PL) and 2PL IRT analysis of weighted MNSQ fit statistics (TAM package)
2D IRT modelling to estimate correlation bounds after Köhler & Hartig (2017)
Step-guided interface enabling non-technical researchers to conduct psychometric instrument evaluation
Interactive result visualisation (Plotly)

Relevance

The methods implemented mirror those used in COA instrument validation in clinical trials — assessing whether individual items of a patient-reported outcome (PRO) measure behave as expected under an IRT model, and quantifying the practical consequences of misfit.

SHS World Map

Sun, 01 Jan 2023 00:00:00 +0000

SHS World Map is an interactive R Shiny dashboard visualising Serious Health-Related Suffering (SHS) burden data across 195 countries, developed for the Lancet Commission on Palliative Care and Pain Relief.

SHS is a patient-centred epidemiological endpoint operationalising unmet need for palliative care — a direct application of outcome measurement methodology at population scale.

Features

Interactive choropleth maps with country-level SHS burden estimates
Time series charts and hierarchical visualisations of health-burden indicators
Responsive web dashboard with complex filtering for research and advocacy audiences
Used in regulatory, policy, and clinical research contexts worldwide

Clinical Research | Axel Budde

FUN For Fit

Features

Relevance

SHS World Map

Features