voiage.methods.sample_information.normal_normal_two_arm_evsi

normal_normal_two_arm_evsi

normal_normal_two_arm_evsi([keyword-only] prior_mean: float = None, [keyword-only] prior_standard_deviation: float = None, [keyword-only] outcome_standard_deviation: float = None, [keyword-only] total_sample_size: int = None, [keyword-only] net_benefit_slope: float = None, [keyword-only] net_benefit_intercept: float = None) -> float

Calculate EVSI for a declared equal-allocation normal study.

The uncertain incremental effect has a normal prior. The proposed two-arm study has a common known outcome standard deviation and equal allocation. Incremental net benefit is linear in the effect.

Parameters:

• prior_mean float
• prior_standard_deviation float
• outcome_standard_deviation float
• total_sample_size int
• net_benefit_slope float
• net_benefit_intercept float

Returns: float