
Nonparametric estimation and inference for polytomous discrimination index.
Publication
, Journal Article
Li, J; Feng, Q; Fine, JP; Pencina, MJ; Van Calster, B
Published in: Stat Methods Med Res
October 2018
Polytomous discrimination index is a novel and important diagnostic accuracy measure for multi-category classification. After reconstructing its probabilistic definition, we propose a nonparametric approach to the estimation of polytomous discrimination index based on an empirical sample of biomarker values. In this paper, we provide the finite-sample and asymptotic properties of the proposed estimators and such analytic results may facilitate the statistical inference. Simulation studies are performed to examine the performance of the nonparametric estimators. Two real data examples are analysed to illustrate our methodology.
Duke Scholars
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Published In
Stat Methods Med Res
DOI
EISSN
1477-0334
Publication Date
October 2018
Volume
27
Issue
10
Start / End Page
3092 / 3103
Location
England
Related Subject Headings
- Statistics, Nonparametric
- Statistics & Probability
- ROC Curve
- Mass Spectrometry
- Logistic Models
- Liver Neoplasms
- Humans
- Egypt
- Databases, Factual
- Data Interpretation, Statistical
Citation
APA
Chicago
ICMJE
MLA
NLM
Li, J., Feng, Q., Fine, J. P., Pencina, M. J., & Van Calster, B. (2018). Nonparametric estimation and inference for polytomous discrimination index. Stat Methods Med Res, 27(10), 3092–3103. https://doi.org/10.1177/0962280217692830
Li, Jialiang, Qunqiang Feng, Jason P. Fine, Michael J. Pencina, and Ben Van Calster. “Nonparametric estimation and inference for polytomous discrimination index.” Stat Methods Med Res 27, no. 10 (October 2018): 3092–3103. https://doi.org/10.1177/0962280217692830.
Li J, Feng Q, Fine JP, Pencina MJ, Van Calster B. Nonparametric estimation and inference for polytomous discrimination index. Stat Methods Med Res. 2018 Oct;27(10):3092–103.
Li, Jialiang, et al. “Nonparametric estimation and inference for polytomous discrimination index.” Stat Methods Med Res, vol. 27, no. 10, Oct. 2018, pp. 3092–103. Pubmed, doi:10.1177/0962280217692830.
Li J, Feng Q, Fine JP, Pencina MJ, Van Calster B. Nonparametric estimation and inference for polytomous discrimination index. Stat Methods Med Res. 2018 Oct;27(10):3092–3103.

Published In
Stat Methods Med Res
DOI
EISSN
1477-0334
Publication Date
October 2018
Volume
27
Issue
10
Start / End Page
3092 / 3103
Location
England
Related Subject Headings
- Statistics, Nonparametric
- Statistics & Probability
- ROC Curve
- Mass Spectrometry
- Logistic Models
- Liver Neoplasms
- Humans
- Egypt
- Databases, Factual
- Data Interpretation, Statistical