Riley RD, Archer L, Snell KIE, et al. Evaluation of clinical prediction models (part 2): how to undertake an external validation study. BMJ. 2024;384:e074820. DOI 10.1136/bmj-2023-074820
This note indexes a cited or audit-added source. It may be an original study, review, guideline, form or methods reference. Treat the specific design and the evidence below as authoritative; a source note is not automatically a primary study.
Bibliographic record from the original reports
Access labels embedded in these original reference strings are historical. Current access and exact checked components are stated separately below.
Riley RD, Archer L, Snell KIE, et al. Evaluation of clinical prediction models (part 2): how to undertake an external validation study. BMJ. 2024;384:e074820. DOI 10.1136/bmj-2023-074820
Conditions: COND-PD Parkinson’s disease
Scoped audit evidence
These are source- and component-level audit summaries as of 3 October 2026. Access and comparison scope can differ by report; none certifies every result or the underlying raw data.
Parkinson’s disease — gait
- access status: primary_body_retrieved
GaitP24-26conceptual discrimination/calibration/external fixedmodelversusrefit;balanceP18same;predictionhorizonandclinicalutilitydistinct. Source locator: s2Summarypoints;s3WhatDoWeMeanByExternalValidation;laterSteps3-4 Limit: Methodologicalguidance ratherthan PDempiricalevidence. DoesnotconstituteformallycompletedPROBASTassessment.
Limitations: Only scoped comparisons, not whole-paper certification.
Parkinson’s disease — balance
- access status: primary_body_retrieved
GaitP24-26conceptual discrimination/calibration/external fixedmodelversusrefit;balanceP18same;predictionhorizonandclinicalutilitydistinct. Source locator: s2Summarypoints;s3WhatDoWeMeanByExternalValidation;laterSteps3-4 Limit: Methodologicalguidance ratherthan PDempiricalevidence. DoesnotconstituteformallycompletedPROBASTassessment.
Limitations: Only scoped comparisons, not whole-paper certification.
Parkinson’s disease — balance1
- access status: primary_body_retrieved
GaitP24-26conceptual discrimination/calibration/external fixedmodelversusrefit;balanceP18same;predictionhorizonandclinicalutilitydistinct. Source locator: s2Summarypoints;s3WhatDoWeMeanByExternalValidation;laterSteps3-4 Limit: Methodologicalguidance ratherthan PDempiricalevidence. DoesnotconstituteformallycompletedPROBASTassessment.
Limitations: Only scoped comparisons, not whole-paper certification.
Reports citing this source
- Gait analysis and prognosis in Parkinson’s disease · reference 13 · original reference
- Standing balance assessment and prognosis in Parkinson’s disease · reference 20 · original reference
- Standing balance assessment and prognosis in Parkinson’s disease · reference 20 · original reference
Update record
- 2026-10-03: Created from the supplied reports and final scoped audit. New evidence should be appended with source version, access date, exact locator and affected report links.
Updating the wiki · Evidence and status guide