Contributing to health system resilience during pandemics via purchasing and supply strategies: an exploratory system dynamics approach

Table 2 Overview of uncertainties and associated assumptions/sources used in model

Category	Uncertainty	Source
Supply Chain	Base raw material & production capacity for PPE and ventilators. Increase in production capacity over time for PPE and ventilators	Assumptions made based on sources where possible. For instance, information by [23, 48, 49, 61]
Supply Chain Disruption	Shipment times; Export Restrictions; Delays in the production & procurement of products	Values obtained from information by [25, 51]
Crisis	Infectivity	Values obtained from information by [62, 63]

ISSN: 1472-6963