Builds a design with one treatment and one control arm. Treatment effects can be specified either by providing control_mean and treatment_mean or by specifying a control_mean and ate.

two_arm_designer(N = 100, assignment_prob = 0.5, control_mean = 0,
control_sd = 1, ate = 1, treatment_mean = control_mean + ate,
treatment_sd = control_sd, rho = 1, args_to_fix = NULL)

## Arguments

N An integer. Sample size. A number in [0,1]. Probability of assignment to treatment. A number. Average outcome in control. A positive number. Standard deviation in control. A number. Average treatment effect. A number. Average outcome in treatment. Overrides ate if both specified. A nonnegative number. Standard deviation in treatment. By default equals control_sd. A number in [-1,1]. Correlation between treatment and control outcomes. A character vector. Names of arguments to be args_to_fix in design.

## Value

A simple two-arm design.

## Details

Units are assigned to treatment using complete random assignment. Potential outcomes are normally distributed according to the mean and sd arguments.

## Examples

# Generate a simple two-arm design using default arguments
two_arm_design <- two_arm_designer()

## Author

DeclareDesign Team