Physical multimorbidity, mental health and unplanned admissions from 2008 to 2018 in Abruzzo region

Abstract

Abstract Background Multimorbidity is defined as the presence of more than one long-term disorder and it is associated with increased use of health services. Socioeconomic deprivation and mental health conditions may lead to undesirable additional unplanned admission to hospital (urgent or emergency admission). This study examines the association among unplanned admission, multimorbidity, mental health and socioeconomic deprivation for both preventable and not preventable hospitalization. Methods We conducted a retrospective analysis of hospital discharge records between 2008 and 2018 in Abruzzo, an Italian region. Multilevel logistic regression models were implemented for both preventable and not preventable unplanned admissions. We set as levels the district of residence and Local Health Authority. As independent variables we used the Italian Deprivation Index of the district of residence to mitigate socioeconomic inequalities, unweighted count of physical health conditions (0, 1, 2, 3, ≥4), the presence of a diagnosis of mental health condition. All the models were also adjusted for age and gender. Results We selected 2,017,720 non preventable admissions, 836,808 (41.45%) of which unplanned, and 152,938 preventable admissions, 107,336 (70.18%) of which unplanned. Both unplanned and potentially unplanned admissions were associated with increasing physical multimorbidity (for ≥4 v. 0 condition, OR 4.85; CI95% 4.26-5.53 for unplanned admission and OR 1.42; CI95% 1.11-1.83 for preventable unplanned admission) and with mental health conditions (OR 1.66; CI95% 1.57-1.75 for unplanned admission and OR 1.18; CI95% 1.00-1.38 for preventable unplanned admission). Conclusions Co-occurrence of physical multimorbidity and mental health condition was associated either with unplanned admission or unplanned preventable admission. Primary care interventions targeting multimorbidity are necessary to reduce the hospital service burden. Key messages Physical multimorbidity substantially affects the use of acute hospital services. Primary care interventions targeting multimorbidity are necessary to reduce the hospital service burden.