Table 2.

Effect of interventions on knowledge of association between cancer risk and old age after viewing interventions

Intervention received	Correct knowledge pre-intervention	Correct knowledge post-intervention	Risk ratio (95% confidence interval)
Control (N = 10)	N = 2	N = 2	1.0 (RC)
Intervention A (N = 11)	N = 2	N = 7	3.2 (0.85–11.88)
Intervention B (N = 9)	N = 0	N = 5	2.8 (0.71–10.94)
Intervention A or B (N = 20)	N = 2	N = 12	3.0 (0.82–10.90)

RC, reference category.

Risk ratio indicates probability of having correct post-intervention knowledge.