Int J Clin Pract. 2018;e13283. wileyonlinelibrary.com/journal/ijcp | 1 of 11 https://doi.org/10.1111/ijcp.13283 © 2018 John Wiley & Sons Ltd Received: 14 August 2018 | Revised: 2 October 2018 | Accepted: 9 October 2018 DOI: 10.1111/ijcp.13283 ORIGINAL PAPER In-hospital outcomes for solid organ transplants according to type 2 diabetes status: An observational, 15-year study in Spain José M. de Miguel-Yanes 1 | Rodrigo Jiménez-García 2 | Javier de Miguel-Díez 3 | Valentín Hernández-Barrera 2 | Manuel Méndez-Bailón 4 | Nuria Muñoz-Rivas 5 | Ana López-de-Andrés 2 1 Internal Medicine Department, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, Madrid, Spain 2 Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain 3 Respiratory Care Department, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain 4 Internal Medicine Department, Hospital Universitario Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain 5 Internal Medicine Department, Hospital Universitario Infanta Leonor, Madrid, Spain Correspondence Rodrigo Jiménez-García, Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, Alcorcón, Madrid, Spain. Email: rodrigo.jimenez@urjc.es Funding information This study forms part of research funded by the FIS (Fondo de Investigaciones Sanitarias—Health Research Fund, grant no. PI16/00564, Instituto de Salud Carlos III), cofinanced by the European Union through the Fondo Europeo de Desarrollo Regional (FEDER, “Una manera de hacer Europa”). The funding sources had no involvement at any step of the research done or in the process of writing this manuscript. Summary Aims: To describe trends and outcomes during admission for solid organ transplant in people with or without type 2 diabetes in Spain, 2001-2015. Methods: We used national hospital discharge data to select all hospital admissions for kidney, lung, heart, and liver transplant. We estimated admission rates stratified by type 2 diabetes status. We built Poisson regression models to compare the ad- justed time trends in admission rates. We tested in-hospital mortality (IHM) in logistic regression analyses. Results: We identified 50 964 transplants (16.7% in people with type 2 diabetes): kidney, 30 919; lung, 2810; heart, 3649; liver, 13 586. The overall adjusted incidence rate ratios (95% confidence intervals) of admission in people with type 2 diabetes vs no diabetes were 2.4 (2.32-2.48) for kidney, 1.51 (1.33-1.70) for lung, 2.87 (2.63-3.13) for heart, and 4.16 (3.99-4.33) for liver transplant. In the multivariate analysis, IHM decreased significantly over time for all types of transplant. Type 2 diabetes indepen- dently predicted lower IHM during admission only for heart (Odds ratio, OR [95% CI] = 0.62 [0.47-0.81]) and liver transplant (OR [95% CI] = 0.69 [0.58-0.82]). Conclusions: Admission rates for solid organ transplant were higher in people with type 2 diabetes than in people without diabetes. Type 2 diabetes was associated with lower in-hospital mortality during admission for heart and liver transplant.