Continuous Ordinal Regression for Analysis of Visual Analogue Scales: The R Package ordinalCont
Dublin Core
Title
Continuous Ordinal Regression for Analysis of Visual Analogue Scales: The R Package ordinalCont
Subject
Continuous Ordinal Regression for Analysis of Visual Analogue Scales: The R Package ordinalCont
Description
This paper introduces the R package ordinalCont, which implements an ordinal regression framework for response variables which are recorded on a visual analogue scale
(VAS). This scale is used when recording subjects’ perception of an intangible quantity
such as pain, anxiety or quality of life, and consists of a mark made on a linear scale.
We implement continuous ordinal regression models for VAS as the appropriate method
of analysis for such responses, and introduce smoothing terms and random effects in the
linear predictor. The model parameters are estimated using constrained optimization of
the penalized likelihood and the penalty parameters are automatically selected via maximization of their marginal likelihood. The estimation algorithm is shown to perform
well, in a simulation study. Two examples of application are given: the first involves the
analysis of pain outcomes in a clinical trial for laser treatment for chronic neck pain; the
second is an analysis of quality of life outcomes in a clinical trial for chemotherapy for the
treatment of breast cancer.
(VAS). This scale is used when recording subjects’ perception of an intangible quantity
such as pain, anxiety or quality of life, and consists of a mark made on a linear scale.
We implement continuous ordinal regression models for VAS as the appropriate method
of analysis for such responses, and introduce smoothing terms and random effects in the
linear predictor. The model parameters are estimated using constrained optimization of
the penalized likelihood and the penalty parameters are automatically selected via maximization of their marginal likelihood. The estimation algorithm is shown to perform
well, in a simulation study. Two examples of application are given: the first involves the
analysis of pain outcomes in a clinical trial for laser treatment for chronic neck pain; the
second is an analysis of quality of life outcomes in a clinical trial for chemotherapy for the
treatment of breast cancer.
Creator
Maurizio Manuguerra
Source
https://www.jstatsoft.org/article/view/v096i08
Publisher
Macquarie University
Date
November 2020
Contributor
Fajar bagus W
Format
PDF
Language
Inggris
Type
Text
Files
Collection
Citation
Maurizio Manuguerra, “Continuous Ordinal Regression for Analysis of Visual Analogue Scales: The R Package ordinalCont,” Repository Horizon University Indonesia, accessed February 17, 2025, https://repository.horizon.ac.id/items/show/8174.