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Table 3 Subsystem 3 variables 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

Doctor power

State

1,000

Doctor’s lobbying power at equilibrium; equals PCW power at equilibrium

Doctor spending on lobbying

Rate

0

Doctor power × Proportion on lobbying

Proportion on lobbying of doctors

Auxiliary

0.125

Doctors spent 12.5% of their resources on lobbying

Doctor spending on patient services

Rate

0

Doctor power × (1–Proportion on lobbying of doctors)

PCW power

State

1,000

PCW’s lobbying power at equilibrium; PCWs and doctors start with the same level of power

PCW spending on lobbying

Rate

0

PCW power × Proportion on lobbying of PCWs

Proportion on lobbying of PCWs

Auxiliary

0.5

PCWs spend 50% of their resources on lobbying

PCWs spending on prevention of disease B

Rate

0

PCW power × (1-Proportion on lobbying of PCWs)