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Sample Size or Power for Paired-Sample Proportion Test

Source: R/pair_prop_size.R
pair_prop_size.Rd

Calculates sample size or power for a paired-sample proportion test.

Usage

pair_prop_size(p01, p10, alpha, beta = NULL, n = NULL, test_type = "2-side")

Arguments

p01

Numeric. Proportion of discordant pairs with (before = 1, after = 0).

p10

Numeric. Proportion of discordant pairs with (before = 0, after = 1).

alpha

Numeric. Type I error rate.

beta

Numeric (optional). Type II error rate. Required for sample size calculation.

n

Integer (optional). Sample size. Required for power calculation.

test_type

Character. "2-side" or "1-side". Default is "2-side".

Value

Numeric. Returns sample size (if beta is given), or power (if n is given).

Note

Only one of beta (for sample size calculation) or n (for power calculation) should be specified.

Required arguments:

  • For sample size: p01, p10, alpha, beta

  • For power: p01, p10, alpha, n

Examples

# Sample size for `"2-side"` test
pair_prop_size(p01 = 0.45, p10 = 0.05,
               alpha = 0.1, beta = 0.1, test_type = "2-side")
#> [1] 23

# Power of `"2-side"` test
pair_prop_size(p01 = 0.45, p10 = 0.05,
               alpha = 0.1, n = 23, test_type = "2-side")
#> [1] 0.9023805

# Sample size for `"1-side"` test
pair_prop_size(p01 = 0.45, p10 = 0.05,
               alpha = 0.05, beta = 0.1, test_type = "1-side")
#> [1] 23

# Power of `"1-side"` test
pair_prop_size(p01 = 0.45, p10 = 0.05,
               alpha = 0.05, n = 23, test_type = "1-side")
#> [1] 0.9023805