formatp {tab}

Format P-values for Functions in the tab Package

Description

Formats p-values for tables generated by the functions in the tab package. Handles rounding and presentation of p-values.

Usage

formatp(
  p,
  decimals = c(2, 3),
  cuts = 0.01,
  lowerbound = 0.001,
  leading0 = TRUE,
  avoid1 = FALSE
)

Arguments

p

Numeric vector of p-values.

decimals

Number of decimal places for p-values. If a vector is provided rather than a single value, number of decimal places will depend on what range the p-value lies in. See cuts input.

cuts

Cut-point(s) to control number of decimal places used for p-values. For example, by default cuts = 0.1 and decimals = c(2, 3). This means that p-values in the range [0.1, 1] will be printed to two decimal places, while p-values in the range [0, 0.1) will be printed to three decimal places.

lowerbound

Controls cut-point at which p-values are no longer printed as their value, but rather <lowerbound. For example, by default lowerbound = 0.001. Under this setting, p-values less than 0.001 are printed as <0.001.

leading0

If TRUE, p-values are printed with 0 before decimal place; if FALSE, the leading 0 is omitted.

avoid1

If TRUE, p-values rounded to 1 are not printed as 1, but as >0.99 (or similarly depending on decimals and cuts).

Value

Character vector.

Examples

# Generate vector of numeric p-values
set.seed(123)
p <- c(runif(n = 5, min = 0, max = 1), 1, 0, 4e-7, 0.009)

# Round to nearest 2 decimals for p in (0.01, 1] and 3 decimals for p < 0.01
pvals <- formatp(p = p)

# Use 2 decimal places, a lower bound of 0.01, and omit the leading 0
pvals <- formatp(p = p, decimals = 2, lowerbound = 0.01, leading0 = FALSE)