Predicting Readmissions on the Basis of a Well-Known Risk of Readmission Score

A recent NIHR CLAHRC West Midlands study examined a score based on co-morbidities, hospital use before the index admission, length of stay, and rate of admission – the LACE score.[1] The findings broadly corroborate the score and previous evidence – high scores are statistically associated with risk of readmission, but predictive accuracy is low and hardly likely to improve on clinical assessment; no doctor would use such a test to identify patients. This is an inpatient study based on over 90,000 admissions. We do not want every clinical action to be codified in a score – it is a waste of time. Moreover, most readmissions are caused by a new problem.[2] So a more sensible way forward, from my point of view, would be a general index of risk of deterioration to cover patients at all points in their journey. Would the ‘frailty index’ [3] [4] serve this purpose perfectly well?

— Richard Lilford, CLAHRC WM Director


  1. Damery S, Combes G. Evaluating the predictive strength of the LACE index in identifying patients at high risk of hospital readmission following an inpatient episode: a retrospective cohort study. BMJ Open. 2017; 7: e016921.
  2. Lilford RJ. Unintended Consequences of Pay-for-Performance Based on Readmissions. NIHR CLAHRC West Midlands News Blog. 13 January 2017.
  3. Lilford RJ. Future Trends in NHS. NIHR CLAHRC West Midlands News Blog.
  4. Clegg A, Bates C, Young J, et al. Development and validation of an electronic frailty index using routine primary care electronic health record data. Age Ageing. 2016.

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