| quantile_glu {iglu} | R Documentation |
Calculate glucose level quantiles
Description
The function quantile_glu is a wrapper for the base function quantile(). Output
is a tibble object with columns for subject id and each of the quantiles.
Usage
quantile_glu(data, quantiles = c(0, 25, 50, 75, 100))
Arguments
data |
DataFrame object with column names "id", "time", and "gl", or numeric vector of glucose values. |
quantiles |
List of quantile values between 0 and 100. |
Details
A tibble object with 1 row for each subject, a column for subject id and
a column for each quantile is returned. NA glucose values are
omitted from the calculation of the quantiles.
The values are scaled from 0-1 to 0-100 to be consistent in output with above_percent, below_percent, and in_range_percent.
The command quantile_glu(...) / 100 will scale each element down from 0-100
to 0-1.
Value
If a DataFrame object is passed, then a tibble object with
a column for subject id and then a column for each quantile value is returned. If a vector of glucose
values is passed, then a tibble object without the subject id is returned.
as.numeric() can be wrapped around the latter to output a numeric vector.
Examples
data(example_data_1_subject)
quantile_glu(example_data_1_subject)
quantile_glu(example_data_1_subject, quantiles = c(0, 33, 66, 100))
data(example_data_5_subject)
quantile_glu(example_data_5_subject)
quantile_glu(example_data_5_subject, quantiles = c(0, 10, 90, 100))