Table 1. Modeling aspects reviewed in this study.

Aspects	Descriptions
Modeling approach	Dynamic vs. static; aggregate level vs. individual level; deterministic vs. stochastic.
Assumption on natural immunity	Susceptible-infectious-susceptible (SIS), susceptible-infectious-recovered (SIR) and susceptible-infectious-recovered-susceptible (SIRS)1
Model calibration process	Method used for calibration, if any.
Diseases modeled	HPV-related diseases considered in the model.
HPV transmission patterns modeled	Heterosexual or homosexual.
Vaccination and screening strategies assessed	Vaccination strategy (initial vaccination, catch-up vaccination and booster), screening strategy and vaccine coverage rate.
Input parameters	Vaccine characteristics (efficacy, against infection and/or disease, waning function), transition probabilities, costs, utilities and discount rate.

¹ An SIR model assumes that, after recovery from infection, the individual will not be re-infected (i.e., natural immunity) whereas an SIS model assumes the individual can be re-infected immediately after recovery from infection (i.e., no natural immunity). An SIRS model assumes that natural immunity only exists for a period of time following recovery from infection.