dental

This is a crossover design (Study H) given in Newcombe et al. (1995) to study the effects of CHX rinses on 4 day plaque regrowth. The study consisted of 24 patients assessed over 3 treatment periods. The purpose of the study was to compare 2 CHX rinses with saline. The design is based on pairs of Latin squares balanced for carry over.

datasets

Returns a Hasse diagram of the layout structure (Bate and Chatfield (2016)) <doi:10.1080/00224065.2016.11918173> or the restricted layout structure (Bate and Chatfield (2016)) <doi:10.1080/00224065.2016.11918174> of an experimental design.

Damianos Michaelides

hassediagrams

Hasse Diagram of the Layout Structure and Restricted Layout
Structure

Simon Bate

Marion Chatfield

dental function

A crossover design of 72 runs on 5 variables/factors. The 5 variables/factors included in the design are:<dl>
 <dt>Sequence</dt>
<dd>Categoric factor with levels 1-6.</dd> <dt>Subject</dt>
<dd>Categoric factor with levels 1-32.</dd> <dt>Period</dt>
<dd>Categoric factor with levels 1-3.</dd> <dt>Treatment</dt>
<dd>Categoric factor with levels CHX1, CHX2 and Saline.</dd> <dt>Observation</dt>
<dd>Categoric factor with levels 1-72.</dd>
</dl>

Format

A crossover design for a dental study — dental

A crossover design of 72 runs on 5 variables/factors. The 5 variables/factors included in the design are:<dl>
 <dt>Sequence</dt>
<dd>Categoric factor with levels 1-6.</dd>

 <dt>Subject</dt>
<dd>Categoric factor with levels 1-32.</dd>

 <dt>Period</dt>
<dd>Categoric factor with levels 1-3.</dd>

 <dt>Treatment</dt>
<dd>Categoric factor with levels CHX1, CHX2 and Saline.</dd>

 <dt>Observation</dt>
<dd>Categoric factor with levels 1-72.</dd>


</dl>

dental: A crossover design for a dental study

Description

Usage

Arguments

Format

Examples