Table 2. Regression models of diagnostic test positivity rates (TPR) as predictors of confirmed malaria case rate (CMCR).

Model	Formula	Adjusted R2	AIC
Linear	y = b0 + b1(x)	0.44	680
Logarithmic	y = b0 + (b1 * ln(x))	0.25	694
Linear Spline at TPR 35%	Y = bo + b1(xx<35%) + b2(xx>35%)	0.56	666
Quadratic	y = b0 + b1x + b2x2	0.58	661
Cubic	y = b0 + b1x + b2x2 + b3x3	0.69	645
Power	y = b0 * (xb1)	0.77	646
Exponential	y = b0 * b1x	0.80	637

AIC = Akaike Information Criteria.