Development and validation of outcome prediction models for aneurysmal subarachnoid haemorrhage: the SAHIT multinational cohort study
Objective To develop and validate a set of practical prediction tools that reliably estimate the outcome of subarachnoid haemorrhage from ruptured intracranial aneurysms (SAH). - Design Cohort study with logistic regression analysis to combine predictors and treatment modality. - Setting Subarachnoi...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
18 January 2018
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| In: |
The BMJ
Year: 2018, Volume: 360 |
| ISSN: | 1756-1833 |
| DOI: | 10.1136/bmj.j5745 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1136/bmj.j5745 Verlag, lizenzpflichtig, Volltext: https://www.bmj.com/content/360/bmj.j5745 
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| Author Notes: | Blessing N.R. Jaja, Gustavo Saposnik, Hester F. Lingsma, Erin Macdonald, Kevin E. Thorpe, Muhammed Mamdani, Ewout W. Steyerberg, Andrew Molyneux, Airton Leonardo de Oliveira Manoel, Bawarjan Schatlo, Daniel Hanggi, David Hasan, George K. C. Wong, Nima Etminan, Hitoshi Fukuda, James Torner, Karl L. Schaller, Jose I. Suarez, Martin N. Stienen, Mervyn D.I. Vergouwen, Gabriel J.E. Rinkel, Julian Spears, Michael D. Cusimano, Michael Todd, Peter Le Roux, Peter Kirkpatrick, John Pickard, Walter M. van den Bergh, Gordon Murray, S. Claiborne Johnston, Sen Yamagata, Stephan Mayer, Tom A. Schweizer, R. Loch Macdonald, on behalf of the SAHIT collaboration |
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| 245 | 1 | 0 | |a Development and validation of outcome prediction models for aneurysmal subarachnoid haemorrhage |b the SAHIT multinational cohort study |c Blessing N.R. Jaja, Gustavo Saposnik, Hester F. Lingsma, Erin Macdonald, Kevin E. Thorpe, Muhammed Mamdani, Ewout W. Steyerberg, Andrew Molyneux, Airton Leonardo de Oliveira Manoel, Bawarjan Schatlo, Daniel Hanggi, David Hasan, George K. C. Wong, Nima Etminan, Hitoshi Fukuda, James Torner, Karl L. Schaller, Jose I. Suarez, Martin N. Stienen, Mervyn D.I. Vergouwen, Gabriel J.E. Rinkel, Julian Spears, Michael D. Cusimano, Michael Todd, Peter Le Roux, Peter Kirkpatrick, John Pickard, Walter M. van den Bergh, Gordon Murray, S. Claiborne Johnston, Sen Yamagata, Stephan Mayer, Tom A. Schweizer, R. Loch Macdonald, on behalf of the SAHIT collaboration |
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| 520 | |a Objective To develop and validate a set of practical prediction tools that reliably estimate the outcome of subarachnoid haemorrhage from ruptured intracranial aneurysms (SAH). - Design Cohort study with logistic regression analysis to combine predictors and treatment modality. - Setting Subarachnoid Haemorrhage International Trialists’ (SAHIT) data repository, including randomised clinical trials, prospective observational studies, and hospital registries. - Participants Researchers collaborated to pool datasets of prospective observational studies, hospital registries, and randomised clinical trials of SAH from multiple geographical regions to develop and validate clinical prediction models. - Main outcome measure Predicted risk of mortality or functional outcome at three months according to score on the Glasgow outcome scale. - Results Clinical prediction models were developed with individual patient data from 10 936 patients and validated with data from 3355 patients after development of the model. In the validation cohort, a core model including patient age, premorbid hypertension, and neurological grade on admission to predict risk of functional outcome had good discrimination, with an area under the receiver operator characteristics curve (AUC) of 0.80 (95% confidence interval 0.78 to 0.82). When the core model was extended to a “neuroimaging model,” with inclusion of clot volume, aneurysm size, and location, the AUC improved to 0.81 (0.79 to 0.84). A full model that extended the neuroimaging model by including treatment modality had AUC of 0.81 (0.79 to 0.83). Discrimination was lower for a similar set of models to predict risk of mortality (AUC for full model 0.76, 0.69 to 0.82). All models showed satisfactory calibration in the validation cohort. - Conclusion The prediction models reliably estimate the outcome of patients who were managed in various settings for ruptured intracranial aneurysms that caused subarachnoid haemorrhage. The predictor items are readily derived at hospital admission. The web based SAHIT prognostic calculator (http://sahitscore.com) and the related app could be adjunctive tools to support management of patients. | ||
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