Fig. 3

Regression coefficients of x 1 and x 2 under four different levels of prevalence and screening rates (Low-Low, Low-High, High-Low, High-High). Figure 3(a), (b) shows the regression coefficients of x 1 and x 2 under low-low scenario, Fig. 3(c), (d) shows the regression coefficients of x 1 and x 2 under low-high scenario, Fig. 3(e), (f) shows the regression coefficients of x 1 and x 2 under high-low scenario, and Fig. 3(g), (h) shows the regression coefficients of x 1 and x 2 under high-high scenario