Description Usage Arguments Value References See Also Examples
Generates Body Mass Index (BMI) for age z-scores and percentiles based on LMS method for children and adolescents aged 0 to 19 years.
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Datafm |
A DataFrame with variables age (in months), sex (1, 2 or "Male", "Female"), bmi (numeric: in kilograms per meter squared (kg/m^2)). |
age_range |
age range in months. Input has to be characters. It allows "0-24" by default. Other inputs allowed are "24-60" or "61-228". |
digits.zscore |
The number of digits for z-score variable |
digits.perc |
The number of digits for percentile variable |
Notes |
Is FALSE by default. If set to TRUE, 'notes' will be printed on the console about the nature, range of variables allowed and number of records processed. |
A DataFrame with BMI z scores for age and percentiles.
<https://www.who.int/childgrowth/standards/bmi_for_age/en/>
<https://www.who.int/growthref/who2007_bmi_for_age/en/>
<https://www.who.int/childgrowth/standards/Technical_report.pdf>
indivmuaczs
, muaczs
, muacz.bmiz
, plotmuac
and plotbmi
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | ## Example 1: for younger age range = "0-24" months
## No need to specify age_range
## creating a hypothetical dataset
dat1 <- data.frame(age = c(5, 6, 12, 12, 18, 18, 23, 23),
sex = c(1, 2, 1, 2, 1, 2, 1, 2),
bmi = c(17.3, 18.6, 18.2, 12.7, 20.8, 20.8, 13.6, 18.4))
ans1 <- bmizs(Datafm = dat1)
ans1 <- bmizs(Datafm = dat1, Notes = TRUE) # Will also print notes
# ans1
## Example 2: specify age range = "24-60" months
## creating a hypothetical dataset
dat2 <- data.frame(age = c(25, 36, 48, 60),
sex = 2, bmi = c(15.7, 16.8, 20.6, 12.7))
ans2 <- bmizs(Datafm = dat2, age_range = "24-60")
# ans2
## Example 3: specify age range = "61-228" months
## creating a hypothetical dataset
dat3 <- data.frame(age = c(61, 73, 181, 217),
sex = 1, bmi = c(12.1, 14.1, 27.1, 35.4))
ans3 <- bmizs(Datafm = dat3, age_range = "61-228")
# ans3
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