Cited by 30Cystic Fibrosis Research AdvancesStatistical Methods and Bayesian InferenceChronic Obstructive Pulmonary Disease (COPD) Research

Dynamic predictive probabilities to monitor rapid cystic fibrosis disease progression

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Szczesniak, Rhonda D., Su, Weiji, Brokamp, Cole, Keogh, Ruth H., Pestian, John P., Seid, Michael, Diggle, Peter J., Clancy, John P.·2020·Statistics in Medicine

Abstract

Cystic fibrosis (CF) is a progressive, genetic disease characterized by frequent, prolonged drops in lung function. Accurately predicting rapid underlying lung-function decline is essential for clinical decision support and timely intervention. Determining whether an individual is experiencing a period of rapid decline is complicated due to its heterogeneous timing and extent, and error component of the measured lung function. We construct individualized predictive probabilities for "nowcasting" rapid decline. We assume each patient's true longitudinal lung function, S(t), follows a nonlinear, nonstationary stochastic process, and accommodate between-patient heterogeneity through random effects. Corresponding lung-function decline at time t is defined as the rate of change, S'(t). We predict S'(t) conditional on observed covariate and measurement history by modeling a measured lung function as a noisy version of S(t). The method is applied to data on 30 879 US CF Registry patients. Results are contrasted with a currently employed decision rule using single-center data on 212 individuals. Rapid decline is identified earlier using predictive probabilities than the center's currently employed decision rule (mean difference: 0.65 years; 95% confidence interval (CI): 0.41, 0.89). We constructed a bootstrapping algorithm to obtain CIs for predictive probabilities. We illustrate real-time implementation with R Shiny. Predictive accuracy is investigated using empirical simulations, which suggest this approach more accurately detects peak decline, compared with a uniform threshold of rapid decline. Median area under the ROC curve estimates (Q1-Q3) were 0.817 (0.814-0.822) and 0.745 (0.741-0.747), respectively, implying reasonable accuracy for both. This article demonstrates how individualized rate of change estimates can be coupled with probabilistic predictive inference and implementation for a useful medical-monitoring approach.

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  1. [17]De Finetti B. Theory of Probability. Vol 1 New York, NY: Wiley; 1974.
  2. [32]McPhail GL, Weiland J, Hoberman AJ, et al. Improving rapid FEV1 decline through quality improvement. Pediatr Pulmonol. 2013; 48: 394.

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Authors
Szczesniak, R. D., Su, W., Brokamp, C., Keogh, R. H., Pestian, J. P., Seid, M., Diggle, P. J., & Clancy, J. P.
Affiliations
  • Cincinnati Children's Hospital Medical Center (US)
  • University of Cincinnati (US)
  • London School of Hygiene & Tropical Medicine (GB)
  • Health Data Research UK (GB)
Corresponding author
Szczesniak, Rhonda D.
Venue
Statistics in Medicine
Publisher
Wiley
Published
2019-12-09
Volume
39
Issue
6
Pages
740-756
ISSN
  • 0277-6715 (ISSN-L)
  • 1097-0258
OpenAlex
W2995206395
Cited by
30
References
36
Citations by year
2026: 3 · 2025: 1 · 2024: 8 · 2023: 7 · 2021: 5 · 2020: 5 · 2019: 1
FWCI
2.02
Type
journal article
Language
en
Open access
Locations
  • Statistics in Medicine (publishedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • LSHTM Research Online (London School of Hygiene and Tropical Medicine) (acceptedVersion)
  • Lancaster EPrints (Lancaster University) (submittedVersion)
Funders
National Heart, Lung, and Blood Institute (K25 HL125954, R01 HL141286)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cystic Fibrosis Research Advances
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Bayesian Inference
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
Keywords
cystic fibrosis, lung function decline, predictive probability, nowcasting, random effects, measurement error, bootstrap confidence intervals, clinical decision support, real-time monitoring
MeSH terms
Cystic Fibrosis, Forced Expiratory Volume, Humans, Lung, Probability, Disease Progression

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