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. 2023 Jan 10;32(3):572–592. doi: 10.1177/09622802221146305

Figure 7.

Figure 7.

Probability of concordance versus φ (proportion accepting randomisation) in Zelen double consent, treatment concealed (solid lines) and treatment revealed (dashed line) designs, for varying θ (proportion randomised to consent arm). Fixed parameters: α = 0.4 (proportion preferring treatment A); β = 0.15 (proportion preferring treatment B); γ = 0.45 (proportion undecided).