Figure 1From: Measuring additive interaction using odds ratiosThe impact of baseline risk (R 00 and interaction magnitude on the discrepancy between the interaction contrast ratio calculated using risk ratios (ICR) and that calculated using odds ratios (ICRF). Each curve represents a specific value of the ICR and changes on the vertical scale represent the magnitude of the discrepancy. Interaction scenarios: Less than additive; ICR = -2.5 and -1.5; Exactly additive: ICR = 0; More than additive and less than multiplicative ICR = 0.5; Exactly multiplicative: ICR = 1; More than additive and more than multiplicative: ICR = 2 and 4Back to article page