Updating methods improved the performance of a clinical prediction model in new patients
Journal of Clinical EpidemiologyPublished 1 December 2007
K.J.M. Janssen, Karel G.M. Moons, Cor J. Kalkman, Diederick E. Grobbee, Yvonne Vergouwe
Citations380
SJR quartileQ1
SJR score3.15
SNIP2.66
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
When the performance is poor in new patients, updating methods can be applied to adjust the model, rather than to develop a new model.
Abstract
When the performance is poor in new patients, updating methods can be applied to adjust the model, rather than to develop a new model.
Keywords
Computer ScienceMedicine
An Introduction to the Bootstrap
39,744 Citations1994Bradley Efron, Robert Tibshirani
PubMedThe MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection.
33,975 Citations1992John E. Ware, Cathy D. Sherbourne
A 36-item short-form survey designed for use in clinical practice and research, health policy evaluations, and general population surveys to survey health status in the Medical Outcomes Study is constructed.
Medical CareThe MOS 36-ltem Short-Form Health Survey (SF-36)
29,791 Citations1992John E. Ware, Cathy D. Sherbourne
A 36-item short-form survey to survey health status in the Medical Outcomes Study and designed for use in clinical practice and research, health policy evaluations, and general population surveys.
Statistics in MedicineMULTIVARIABLE PROGNOSTIC MODELS: ISSUES IN DEVELOPING MODELS, EVALUATING ASSUMPTIONS AND ADEQUACY, AND MEASURING AND REDUCING ERRORS
9,798 Citations1996Frank E. Harrell, Kerry L. Lee +1 more
Journal of Clinical EpidemiologyInternal validation of predictive models
2,629 Citations2001Ewout W. Steyerberg, Frank E. Harrell +4 more
It is concluded that split-sample validation is inefficient, and bootstrapping is recommended for estimation of internal validity of a predictive logistic regression model.
Statistics in MedicineRegression modelling strategies for improved prognostic prediction
1,836 Citations1984Frank E. Harrell, Kerry L. Lee +3 more
A general index of predictive discrimination is used to measure the ability of a model developed on training samples of varying sizes to predict survival in an independent test sample of patients suspected of having coronary artery disease.
Statistics in MedicineWhat do we mean by validating a prognostic model?
1,425 Citations2000Douglas G. Altman, Patrick Royston
How to validate a model is considered and it is suggested that it is desirable to consider two rather different aspects - statistical and clinical validity - and some general approaches to validation are examined.
Annals of Internal MedicineAssessing the Generalizability of Prognostic Information
1,170 Citations1999Amy C. Justice, Kenneth E. Covinsky +1 more
Journal of the American Statistical AssociationRegression with Missing<i>X</i>'s: A Review
974 Citations1992Roderick J. A. Little
Regression With Missing X's: A Review Author(s): Roderick J. A.
American Journal of EpidemiologyA Critical Look at Methods for Handling Missing Covariates in Epidemiologic Regression Analyses
886 Citations1995Sander Greenland, William D. Finkle
The authors recommend that epidemiologists avoid using the missing-indicator method and use more sophisticated methods whenever a large proportion of data are missing, and contrast the results of multiple imputation to simple methods in the analysis of a case-control study of endometrial cancer.
Journal of Clinical EpidemiologySubstantial effective sample sizes were required for external validation studies of predictive logistic regression models
644 Citations2005Yvonne Vergouwe, Ewout W. Steyerberg +2 more
A minimum of 100 events and 100 nonevents is suggested for external validation samples to detect that a model predicted too high probabilities, when predictions were on average 1.5 times too high on the odds scale.
Journal of the American Statistical AssociationRegression With Missing X's: A Review
622 Citations1992Roderick J. A. Little
PainPreoperative prediction of severe postoperative pain
615 Citations2003Cor J. Kalkman, K. Visser +4 more
It is demonstrated that severe postoperative pain early after awakening from general anesthesia can be predicted with a scoring rule, using a small set of variables that can be easily obtained from all patients at the preoperative visit.
Statistics in MedicineValidation and updating of predictive logistic regression models: a study on sample size and shrinkage
549 Citations2004Ewout W. Steyerberg, Gerard Borsboom +3 more
A logistic regression model may be used to provide predictions of outcome for individual patients at another centre than where the model was developed to improve predictions for future patients.
Anesthesia & AnalgesiaThe Amsterdam Preoperative Anxiety and Information Scale (APAIS)
534 Citations1996Nelly Moerman, Frits S.A.M. van Dam +2 more
The results demonstrated that women were more anxious than men; patients with a high information requirement also had a high level of anxiety; and patients who had never undergone an operation had a higher information requirement than those who had.
AnesthesiologyRandomized Controlled Trial of Total Intravenous Anesthesia with Propofol versus Inhalation Anesthesia with Isoflurane–Nitrous Oxide
265 Citations2001K. Visser, Elly A. Hassink +3 more
Propofol TIVA results in a clinically relevant reduction of postoperative nausea and vomiting compared with isoflurane–nitrous oxide anesthesia (number needed to treat = 6).
CirculationReady-Made, Recalibrated, or Remodeled?
162 Citations1999Joan Ivanov, Jack V. Tu +1 more
Poorly calibrated risk algorithms can bias the calculation of RAOM and alter the results of surgeon-specific profiles and any existing index used for risk assessment in cardiac surgery should be episodically recalibrated or compared with new models derived from local subjects to ensure that its performance remains optimal.
Annals of Internal MedicineThe Importance of Disease Prevalence in Transporting Clinical Prediction Rules
148 Citations1986Roy M. Poses, RANDALL D. CEBUL +2 more
Three rules for predicting streptococcal pharyngitis led to accurate predictions when they were adjusted for the disease prevalence found in the authors' setting using a likelihood ratio formulation of Bayes' theorem.
Medical Decision MakingValidation of Probabilistic Predictions
129 Citations1993Michael E. Miller, Carl D. Langefeld +3 more
The authors emphasize how these methods can be applied to general forms of probabilistic predictions and provide several SAS® macros for computation of the desired statistics.
Archives of Internal MedicineTransportability of a Decision Rule for the Diagnosis of Streptococcal Pharyngitis
97 Citations1986Robert S. Wigton
It is concluded that this four-item decision rule derived at the Medical College of Virginia, Richmond, transported well to a different patient population and would have been useful in identifying patients with pharyngitis who had a high likelihood of throat cultures positive for group A streptococci.
Statistics in MedicineConstruction, validation and updating of a prognostic model for kidney graft survival
74 Citations1995Hans C. van Houwelingen, J. Thorogood
The construction, validation and updating of a prognostic model for kidney graft survival is reported using data from the Eurotransplant database, and recommendations are made to place less emphasis on the selection of variables and cut-off points, and more focus on the fine-tuning of the prognostic models by means of low-dimensional parametric models in independent data sets.
Archives of Internal MedicineTransportability of a decision rule for the diagnosis of streptococcal pharyngitis
23 Citations1986R. S. Wigton