weight_for_age {pedbp} | R Documentation |
Weight for Age - Pediatric Growth Standard
Description
Weight for age quantile, distribution, and zscore function based on LMS data from the CDC and WHO.
Usage
p_weight_for_age(
q,
male,
age,
source = getOption("pedbp_pgs_source", "CDC"),
...
)
q_weight_for_age(
p,
male,
age,
source = getOption("pedbp_pgs_source", "CDC"),
...
)
z_weight_for_age(
q,
male,
age,
source = getOption("pedbp_pgs_source", "CDC"),
...
)
Arguments
q |
a vector of quantiles |
male |
integer value, 1 = male, 0 = female |
age |
numeric age, in months |
source |
a character string denoting the data source providing the
parameters needed for the estimate. Valid values are "CDC" and "WHO". This
can be set explicitly, or by using the |
... |
pass through |
p |
a vector of probabilities |
Value
p_
method return values from the estimated distribution function.
q_
methods return values from the estimated quantile function.
z_
methods return standard scores.
Notes
CDC Recommends using WHO growth charts for infants and children ages 0 to 2 years of age in the U.S. and CDC growth charts to monitor growth for children age 2 years and older in the U.S.
References
https://www.cdc.gov/growthcharts/percentile_data_files.htm, https://www.who.int/tools/child-growth-standards/standards
See Also
Distribution functions:
Plotting functions:
Vignette:
-
vignette(topic = "growth-standards", package = "pedbp")
-
Examples
# find the 80th quantile for 56 month old females;
# note - slight difference between CDC and WHO.
q_weight_for_age(p = 0.80, age = 56, male = 0, source = c("CDC", "WHO"))
# the percentiles for 42 kg 13 year old males:
p_weight_for_age(q = 42, age = 13 * 12, male = 0, source = "CDC")
p_weight_for_age(q = 42, age = 13 * 12, male = 0, source = "WHO")
z_weight_for_age(q = 42, age = 13 * 12, male = 0, source = "CDC")
z_weight_for_age(q = 42, age = 13 * 12, male = 0, source = "WHO")