vitamind {GLMMcosinor}

Vitamin D dataset for cosinor modelling examples.

Description

Simulated data set to illustrate the cosinor model. The vit_d column contains the blood vitamin D levels which vary over time (time). The rhythm of the vitamind D fluctuations follows a cosine function and can be modelled with a cosinor model. The X column is a binary covariate representing two groups of patients and is associated with the characteristics of the rhythm. The rhythm has a period of about 12 hours.

Usage

vitamind

Format

A data.frame with 3 variables: vit_d, time, and X.