Calculates the exposure rate applied to each year provided month of policy implementation and number of years to full implementation

Calculates the exposure rate applied to each year provided month of policy implementation and number of years to full implementation

Usage

calculate_exposure(month, n_years, monthly_effect = (1/n_years)/12)

Arguments

month

month of year (as integer) that policy takes effect

n_years

number of months until full implementation in effect

monthly_effect

increment of exposure to apply each month; default is ((1/n_years) / 12) (constant over the period)

Value

A vector of percentages, indicating change in exposure by year (relative to start month)

Examples

# Calculate uniform increase in policy effect which ramps up across 10 years

# Assume policy starts in July of the first year, then continues for 10 years
starting_month <- 7
implementation_years <- 10

# Assume some policy effect (which is the target effect for simulations)
policy_effect <- 2

exposure_by_year <- calculate_exposure(starting_month, implementation_years)

# Based on exposure by year, calculate policy effect by year:
plot(policy_effect*exposure_by_year)