A retrospective study published in 2018. [1]
The study included 338,162 inpatient episodes discharged between 2011 and 2014 at a German university hospital. Psychiatric comorbidities were associated with an increase in hospital costs per episode of 40% and an increase of reimbursement per episode of 28%, representing marginal effects of 1344 € and 1004 €, respectively. After controlling for length of stay, sensitivity analyses provided a lower bound increase in daily costs and reimbursement of 207 € and 151 €, respectively.
1 Wolff J, Heister T, Normann C, et al. Hospital costs associated with psychiatric comorbidities: A retrospective study. BMC Health Serv Res 2018;18:1–7. doi:10.1186/s12913-018-2892-5
