Risk factors and outcome differences in hypoglycaemia-related hospital admissions: a case-control study in England

Zaccardi, Francesco, Webb, David R., Davies, Melanie J., Dhalwani, Nafeesa N., Housley, Gemma, Shaw, Dominic, Hatton, James W. and Khunti, Kamlesh (2017) Risk factors and outcome differences in hypoglycaemia-related hospital admissions: a case-control study in England. Diabetes, Obesity and Metabolism, 19 (10). pp. 1371-1378. ISSN 1462-8902

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Aims: To evaluate risk factors for hospital admissions for hypoglycaemia and compare length of hospitalization, inpatient mortality and hospital readmission between hypoglycaemia- and nonhypoglycaemia-related admissions.

Materials and methods: We used all admissions for hypoglycaemia in individuals with diabetes to English NHS hospital trusts between 2005 and 2014 (101 475 case admissions) and 3 random admissions per case in individuals with diabetes without hypoglycaemia (304 425 control admissions). Risk factors and differences in the 3 outcomes were estimated with logistic and negative binomial regressions.

Results: A U-shaped relationship between age and risk of admission for hypoglycaemia was observed until the age of 85 years; compared to the nadir at 60 years, the risk was progressively higher in younger and older patients and steadily declined after 85 years. Social deprivation (positively) and comorbidities (negatively) were associated with the risk of admission for hypoglycaemia. Compared to Caucasians, other ethnic groups had lower (Bangladeshi, Pakistani,Indians) or higher (Caribbean) risk of admission for hypoglycaemia. Length of hospitalization was 26% shorter while risk of rehospitalization was 65% higher in individuals admitted for hypoglycaemia. Compared to admissions for hypoglycaemia, risk of inpatient mortality was 50% lower for unstable angina but higher for acute myocardial infarction (3 times), acute renal failure (5 times) or pneumonia (8 times).

Conclusions: Among hospital-admitted individuals with diabetes, age, social deprivation, comorbidities and ethnicity are associated with higher frequency of hospitalization for hypoglycaemia. Admission for hypoglycaemia is associated with a greater risk of readmission, a shorter length of hospitalisation and a generally lower inpatient mortality compared to admissions for other medical conditions. These results could help in identifying at-risk groups to reduce the burden of hospitalization for hypoglycaemia.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/884254
Keywords: database research, hypoglycaemia, observational study
Schools/Departments: University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine > Division of Respiratory Medicine
Identification Number: https://doi.org/10.1111/dom.12941
Depositing User: Eprints, Support
Date Deposited: 17 May 2018 08:29
Last Modified: 04 May 2020 19:08
URI: https://eprints.nottingham.ac.uk/id/eprint/51847

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