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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Complex intervention modelling should capture the dynamics of adaptation

Fig. 1

Depiction of referrals from primary to specialist care under a hybrid direct referral/centralized intake system. Black dots indicate queues of patients. Gray arrows indicate patient flows routed through the central intake clinic. Black arrows depict patient flows from primary care direct to specialty care. Gray dots and dotted arrows depict the engagement cycle of specialist resources. The change in the number of patients waiting in given queue per unit time is equal to the flow in minus the flow out. For example: \( {\overset{.}{N}}_C=R{\alpha}_C-{\sum}_S\frac{x_S}{\widehat{x}}{s}_C{N}_C=R{\alpha}_C-{s}_C{N}_C \)

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