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Payne et al describe the development and validation of the Cambridge Morbidity Score which we read with interest(1). We note the authors and editors in their review process missed a very similar paper published in the BMJ in 2017 which described the development and validation of algorithms to predict the risk of unplanned hospital admission and death at one year and a measure of multimorbidity/frailty. These algorithms were developed using QResearch(2) are already widely implemented in EMIS systems (used by over 55% of GP practices in the UK). The algorithms are published and available for validation.
References
1. Payne RA, Mendonca SC, Elliott MN, et al. Development and validation of the Cambridge Multimorbidity Score. CMAJ 2020;192(5):E107-E14. doi: 10.1503/cmaj.190757 [published Online First: 2020/02/06]
2. Hippisley-Cox J, Coupland C. Development and validation of QMortality risk prediction algorithm to estimate short term risk of death and assess frailty: cohort study. BMJ 2017;358:j4208. doi: 10.1136/bmj.j4208