potassiumRepeatedL

Data from the potassium intake study,
a randomized placebo-controlled crossover study where the effect of potassium supplement (90 mmol/day) on the renin-angiostensin-aldosteron system (RAAS) was assessed.
This dataset is in the long format (i.e. one line per measurement) and contains measurement over 6 timepoints for each time period.
<ul>
<li><code>id</code>: patient identifier.</li>
<li><code>sequence</code>: treatment group to which the patient has been randomized.</li>
<li><code>period</code>: time period.</li>
<li><code>treatment</code>: treatment during the time period.</li>
<li><code>time</code>: time within each period.</li>
<li><code>aldo</code>: ??</li>
</ul>

datasets

Companion R package for the course "Statistical analysis of correlated and repeated measurements for health science researchers"
taught by the section of Biostatistics of the University of Copenhagen.
It implements linear mixed models where the model for the variance-covariance of the residuals is specified via patterns (compound symmetry, toeplitz, unstructured, ...).
Statistical inference for mean, variance, and correlation parameters is performed based on the observed information and a Satterthwaite approximation of the degrees of freedom.
Normalized residuals are provided to assess model misspecification.
Statistical inference can be performed for arbitrary linear or non-linear combination(s) of model coefficients.
Predictions can be computed conditional to covariates only or also to outcome values.

Brice Ozenne

LMMstar

potassiumRepeatedL: Data From The Potassium Intake Study (Long Format with intermediate measurements)

Description

Usage

Arguments

References