General
You are kindly invited to the final AI4Health meetup of the year. It is promising to be another interesting session on how AI can improve healthcare, this time focussing on the domains of emergency response times and rehabilitation after cancer surgery. Note that we start a bit earlier than usual: 15:00 with welcome drinks from 14:30.
Please sign up here.
Speakers
Caroline Jagtenberg (VU, Operations Analytics)
How should volunteers be dispatched to out-of-hospital cardiac arrests?
Survival for out-of-hospital cardiac arrest (OHCA) can be significantly improved through bystander efforts. To shorten the time to good-quality cardiopulmonary resuscitation, some emergency call centers use mobile phone technology to rapidly locate and alert nearby trained volunteers. A number of such community first responder (CFR) systems are active worldwide, for example HartslagNu in the Netherlands and GoodSAM in the UK, Australia and New Zealand.
GoodSAM sends so-called phased alerts: they notify increasingly many volunteers with built-in time delays. The policy that defines these delays affects (1) response times - which have a direct relation to survival - (2) CFR workload and (3) the number of redundant CFR arrivals. We start by comparing policies through Monte Carlo Simulation, in which we use bootstrapped values from historical GoodSAM responses, estimating the three KPIs above. CFR app managers can use those results to identify a policy that displays a desirable trade-off between the performance measures.
We continue by using machine learning to predict the best policy to use, given where the volunteers are observed in relation to the patient. We do this by formulating the problem as a multiclass classification problem, for which we train a tree on the results from the simulations above. We compare the performance of the tree against a policy designed by dynamic programming. Finally, we look into optimal decision treeswhich go beyond the heuristic nature of machine learning algorithms.
Charlotte van Westerhuis & Marwan El Morabet (HvA, Center of Expertise Urban Vitality & Amsterdam UMC, Physiotherapy)
Data-driven rehabilitation after cancer surgery
We hope to see you there!