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Models the decay of Seasonal Malaria Chemoprevention (SMC) efficacy as a sigmoid function of time since last administration.

Usage

decay_SMC(x, const = -0.1806)

Arguments

x

Numeric. Number of days since the last SMC treatment.

const

Numeric. The decay constant that controls the steepness of the sigmoid curve. Default is -0.1806.

Value

Numeric. Remaining efficacy of SMC treatment at day x.

Examples

decay_SMC(0)      # Should return near maximum efficacy
#> [1] 0.897671
decay_SMC(60)     # Should return reduced efficacy
#> [1] 0.006774873