Fig. 4

The effectiveness of each client reminder. This figure compares the hepatitis screening rate in the control group in gray (n = 534, default design for reminder, screening at usual cost), group A in black (n = 655, nudge theory applied to reminder, screening at usual cost), and group B which is shaded (n = 307, nudge theory applied to reminder, screening fully subsidized). The screening rate for group A was 15.9% higher than the control group (p < 0.00001), and the screening rate for group B was 49.2% higher than group A (p < 0.00001). The comparisons were done using a chi-squared test with Bonferroni correction