lbgi: Calculate Low Blood Glucose Index (LBGI)

Description Usage Arguments Details Value References Examples

View source: R/lbgi.R

Description

The function lbgi produces LBGI values in a tibble object.

Usage

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Arguments

data

DataFrame object with column names "id", "time", and "gl", or numeric vector of glucose values.

Details

A tibble object with 1 row for each subject, a column for subject id and a column for LBGI values is returned. NA glucose values are omitted from the calculation of the LBGI.

LBGI is calculated by 1/n * ∑ (10 * fbg_i ^2), where fbg_i = min(0, 1.509 * (log(BG_i)^{1.084} - 5.381), BG_i is the ith Blood Glucose measurement for a subject, and n is the total number of measurements for that subject.

Value

If a data.frame object is passed, then a tibble object with two columns: subject id and corresponding LBGI value is returned. If a vector of glucose values is passed, then a tibble object with just the LBGI value is returned. as.numeric() can be wrapped around the latter to output just a numeric value.

References

Kovatchev et al. (2006) Evaluation of a New Measure of Blood Glucose Variability in, Diabetes Diabetes care 29 .2433-2438, doi: 10.2337/dc06-1085.

Examples

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iglu documentation built on Jan. 28, 2021, 1:09 a.m.