ArticleBMC research notes2022
Statistical inference for ordinal predictors in generalized additive models with application to Bronchopulmonary Dysplasia.
Article in BMC research notes, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Modeling the relationship between sensory attributes and liking using generalized additive mixed models: a case study of plant-based meat alternatives.NPJ science of food · 2026Article
- Dynamics of postnatal upper airway bacteria colonization in preterm infants <1000g and bronchopulmonary dysplasia.Scientific reports · 2025Article
- Gait and frontal lobe function become associated in patients with idiopathic normal pressure hydrocephalus after shunt surgery.Frontiers in neurology · 2025Article
- Association of gait and cognition after surgery in patients with idiopathic normal pressure hydrocephalus.Scientific reports · 2023Article
- Ordinal state-trait regression for intensive longitudinal data.The British journal of mathematical and statistical psychology · 2023Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
objectiveDiscrete but ordered covariates are quite common in applied statistics, and some regularized fitting procedures have been proposed for proper handling of ordinal predictors in statistical models. Motivated by a study from neonatal medicine on Bronchopulmonary Dysplasia (BPD), we show how quadratic penalties on adjacent dummy coefficients of ordinal factors proposed in the literature can be incorporated in the framework of generalized additive models, making tools for statistical inference developed there available for ordinal predictors as well.
resultsThe approach presented allows to exploit the scale level of ordinally scaled factors in a sound statistical framework. Furthermore, several ordinal factors can be considered jointly without the need to collapse levels even if the number of observations per level is small. By doing so, results obtained earlier on the BPD data analyzed could be confirmed.
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