Methods & Data

Methodological overview

The programme combines qualitative evidence about real-time dispatch work with observational analyses of large-scale EMS data. The methodological objective is system understanding under uncertainty—especially distributions, heterogeneity, and non-linear patterns—rather than automation.

Interpretation guardrail: Where machine learning is used, it is exploratory and interpretability-first. Performance metrics are contextual only and must not be interpreted as evidence for deployable dispatch or triage automation.

Data (high level)

  • Routinely collected EMS operational metadata (timestamps, classifications, response-time intervals)
  • On-scene clinical classifications where applicable (e.g., ESS and triage labels)
  • Reported in aggregate with privacy-by-design principles

Analytic principles

  • Distribution-first: response-time distributions and tail delays
  • Heterogeneity: patterns vary by context and vulnerability
  • Queue dynamics: prioritisation shapes observed associations
  • Interpretability: explanation and measurement over prediction-for-deployment