Skip to main content

Table 1 Population subsystem parameters and assumptions

From: Advancing the application of systems thinking in health: why cure crowds out prevention

Equilibrium parameters Variable type Initial value Notes and assumptions
Susceptible population State 800 Individuals
Disease A infection rate Rate 40 Individual infected/year
Disease A patients State 200 Infected population, at equilibrium
Disease A incidence rate Auxiliary 0.05 Population based incidence
Disease A duration Auxiliary 0.2 Years
Disease A recovery rate Rate 40 All infected with disease A, recover
Death from disease B Rate 4 Deaths/year
Accumulated death from disease B State 0 Deaths from B, at equilibrium
Disease A annual burden Auxiliary 100 Disease A burden at equilibrium
DALYs lost per case of disease A Auxiliary 0.5 Constant – one untreated case of infection with A is equivalent to 0.5 years of life with disability
Disease A cumulative burden State 0 Disease A burden at equilibrium
Disease B annual burden Auxiliary 100 Disease B burden at equilibrium
DALYs lost per case of disease B Auxiliary 25 Constant – one death from B is equivalent to 25 years of life lost
Disease B cumulative burden State 0 Disease B burden at equilibrium
Total cumulative disease burden Auxiliary 0 Sum of cumulative burden for disease A and disease B, at equilibrium