MappingCalc v2.0

A web-based calculator and R package for mapping clinical instrument scores to preference-based health utility values. MappingCalc implements validated regression and beta-mixture mapping algorithms derived from Singapore population studies.

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Supported Instruments

Instrument	Full Name	Utility Target
PANSS	Positive and Negative Syndrome Scale	EQ-5D-5L
SQLS	Schizophrenia Quality of Life Scale	EQ-5D-5L
WHODAS 2.0	WHO Disability Assessment Schedule 2.0	EQ-5D-5L
PHQ-8	Patient Health Questionnaire-8	EQ-5D-5L
EQ-5D-5L	EuroQol 5-Dimension 5-Level	Utility index

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Web Application

The hosted Shiny application is freely accessible at:

https://eastats.shinyapps.io/MappingCalc

No installation required. Suitable for clinical and research use.

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Installation

From CRAN (Stable Release)

install.packages("MappingCalc")

From GitHub (Latest Development Version)

# Install remotes if not already installed
install.packages("remotes")

# Install MappingCalc from GitHub
remotes::install_github("EdimansyahAbdin/MappingCalc")

Install a Specific Version

# Install a specific tagged release (e.g., v2.0.0)
remotes::install_github("EdimansyahAbdin/MappingCalc@v2.0.0")

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Quick Start

library(MappingCalc)

# Launch the Shiny application locally
run_app()

# Example: PANSS utility score
panss_utility_score(positive = 20, negative = 18, general = 35)

# Example: EQ-5D-5L utility index from profile
eq5d5l_index_value(mo = 2, sc = 1, ua = 2, pd = 3, ad = 2)

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Citation

If you use MappingCalc in your research, please cite the package as follows.

You can also obtain the citation directly in R:

citation("MappingCalc")

APA Format

Abdin et. al. (2026). MappingCalc: A web-based calculator and R package for mapping clinical scales to preference-based utility values (Version 2.0.0) [R package]. https://CRAN.R-project.org/package=MappingCalc

BibTeX

@Manual{MappingCalc2026,
  title  = {MappingCalc: A Web-Based Calculator and R Package for
             Mapping Clinical Scales to Preference-Based Utility Values},
  author = {Edimansyah Abdin},
  year   = {2026},
  note   = {R package version 2.0.0},
  url    = {https://CRAN.R-project.org/package=MappingCalc}
}

Note: A methods paper describing the algorithms and validation of MappingCalc is currently under preparation. Once published, please cite the journal article alongside the package. The reference will be updated here upon acceptance.

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Key References

The mapping algorithms in MappingCalc are based on the following Singapore population studies:

• Abdin, E., Subramaniam, M., Vaingankar, J. A., Luo, N., & Chong, S. A. (2014). Mapping schizophrenia quality of life scale to EQ-5D utility scores in a sample of patients with schizophrenia in Singapore. Quality of Life Research, 23(1), 105-112.

• Abdin, E., Chong, S. A., Seow, E., Peh, C. X., & Subramaniam, M. (2016). Mapping the Positive and Negative Syndrome Scale to the EQ-5D-5L in patients with schizophrenia. Value in Health, 19(8), 1010-1016.

• Seow, L. S. E., Abdin, E., Vaingankar, J. A., Picco, L., Chong, S. A., & Subramaniam, M. (2016). Mapping the World Health Organization Disability Assessment Schedule 2.0 to EQ-5D-5L utility scores in a psychiatric sample. Value in Health, 19(8), 1065-1072.

• Abdin, E., Chong, S. A., Seow, E., & Subramaniam, M. (2018). Mapping PHQ-8 scores to EQ-5D utility values using beta mixture models in a large psychiatric sample. Psychiatry Research, 268, 531-537.

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Author

Edimansyah Abdin
Institute of Mental Health, Singapore
ORCID: 0000-0002-1016-3298
Email: edimansyah.bin.abdin@gmail.com

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License

This package is licensed under the MIT License.