1,090
Views
9
CrossRef citations to date
0
Altmetric
Original Articles

Construction and validation of a morbidity index based on the International Classification of Primary Care

, , , &
Pages 305-312 | Received 12 Nov 2021, Accepted 22 May 2022, Published online: 13 Jul 2022

References

  • Johnston MC, Crilly M, Black C, et al. Defining and measuring multimorbidity: a systematic review of systematic reviews. Eur J Public Health. 2019;29(1):182–189.
  • Stirland LE, González-Saavedra L, Mullin DS, et al. Measuring multimorbidity beyond counting diseases: systematic review of community and population studies and guide to index choice. BMJ. 2020;368:m160.
  • Yurkovich M, Avina-Zubieta JA, Thomas J, et al. A systematic review identifies valid comorbidity indices derived from administrative health data. J Clin Epidemiol. 2015;68(1):3–14.
  • Charlson ME, Pompei P, Ales KL, et al. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis. 1987;40(5):373–383.
  • Armitage JN, van der Meulen JH. Identifying co-morbidity in surgical patients using administrative data with the Royal College of Surgeons Charlson Score. Br J Surg. 2010;97(5):772–781.
  • Brusselaers N, Lagergren J. The charlson comorbidity index in registry-based research. Methods Inf Med. 2017;56(5):401–406.
  • Metcalfe D, Masters J, Delmestri A, et al. Coding algorithms for defining Charlson and Elixhauser co-morbidities in read-coded databases. BMC Med Res Methodol. 2019;19(1):115.
  • Khan NF, Perera R, Harper S, et al. Adaptation and validation of the Charlson index for Read/OXMIS coded databases. BMC Fam Pract. 2010;11:1.
  • Crooks CJ, West J, Card TR. A comparison of the recording of comorbidity in primary and secondary care by using the Charlson index to predict short-term and long-term survival in a routine linked data cohort. BMJ Open. 2015;5(6):e007974.
  • Carey IM, Shah SM, Harris T, et al. A new simple primary care morbidity score predicted mortality and better explains between practice variations than the Charlson index. J Clin Epidemiol. 2013;66(4):436–444.
  • Charlson ME, Charlson RE, Peterson JC, et al. The charlson comorbidity index is adapted to predict costs of chronic disease in primary care patients. J Clin Epidemiol. 2008;61(12):1234–1240.
  • Charlson M, Wells MT, Ullman R, et al. The charlson comorbidity index can be used prospectively to identify patients who will incur high future costs. PLoS One. 2014;9(12):e112479.
  • Sandvik H, Hetlevik O, Blinkenberg J, et al. Continuity in general practice as a predictor of mortality, acute hospitalization, and use of out-of-hours services: registry-based observational study in Norway. Br J Gen Pract. 2022;72(715):e84–e90. DOI: [accessed 4 February 2022]. https://doi.org/10.3399/BJGP.2021.0340
  • WHO International Classification of Primary Care, Second edition (ICPC-2). https://www.who.int/standards/classifications/other-classifications/international-classification-of-primary-care. [accessed 5 February 2022.
  • Barnett K, Mercer SW, Norbury M, et al. Epidemiology of multimorbidity and implications for health care, research, and medical education: a cross-sectional study. Lancet. 2012;380(9836):37–43.
  • Payne RA, Mendonca SC, Elliott MN, et al. Development and validation of the Cambridge multimorbidity score. CMAJ. 2020;192(5):E107–e114.
  • Hosmer DW, Lemeshow S, Sturdivant RX. Applied logistic regression. Hoboken, NJ: John Wiley & Sons, 2013.
  • Steyerberg EW, Harrell FE, Jr., Borsboom GJ, et al. Internal validation of predictive models: efficiency of some procedures for logistic regression analysis. J Clin Epidemiol. 2001;54(8):774–781.
  • Schneeweiss S, Maclure M. Use of comorbidity scores for control of confounding in studies using administrative databases. Int J Epidemiol. 2000;29(5):891–898.
  • Cassell A, Edwards D, Harshfield A, et al. The epidemiology of multimorbidity in primary care: a retrospective cohort study. Br J Gen Pract. 2018;68(669):e245–e251.
  • Charlson M, Szatrowski TP, Peterson J, et al. Validation of a combined comorbidity index. J Clin Epidemiol. 1994;47(11):1245–1251.
  • Bannay A, Chaignot C, Blotière PO, et al. The best use of the Charlson comorbidity index with electronic health care database to predict mortality. Med Care. 2016;54(2):188–194.