make_percentile_tab: calculate raw values

In mvogel78/childsds: Data and Methods Around Reference Values in Pediatrics

Description

Calculate raw values for percentile curve

Usage

make_percentile_tab(ref, item, perc = c(2.5, 5, 50, 95, 97.5), stack = F,
  age = NULL, include.pars = T, digits = 4, sex)

Arguments

ref	Refgroup object
item	name of the measurement item
perc	vector of percentiles to be calculated
stack	wether or not the data should be stacked, stacked data would most possibly be used in ggplot2
age	desired values of age
include.pars	indicator whether or not parameters should be included
digits	specification of number of decimal places
sex	name of the sex variable (character) if different from sex, not functional in this version and therefore ignored

Details

calculates quantile values for given RefGroup and given percentiles

Value

data frame either with the different percentiles as columns or, if stacked, as data frame with four columns: age, sex, variable, value

Author(s)

Mandy Vogel

Examples

ptab <- make_percentile_tab(ref = kro.ref,
                            item = "height",
                           perc = c(2.5,10,50,90,97.5),
                           stack = TRUE)

ggplot2::ggplot(ptab, ggplot2::aes(x = age, y = value, colour = variable)) +
   ggplot2::geom_line() +
   ggplot2::facet_wrap(~ sex, nrow = 2)

mvogel78/childsds documentation built on May 23, 2019, 10:55 a.m.