The association between schizophrenia and quality of care for medical comorbidities in universal health care systems remains unclear.

To elucidate whether equal access also implies equivalent and sufficient care.

To compare the quality of care for heart failure, diabetes and chronic obstructive pulmonary disease (COPD) among patients with and without schizophrenia in Denmark.

In a nationwide population-based cohort study, we used Danish national registries to estimate the risk of receiving guideline recommended disease-specific processes of care between 2004 and 2013.

Compared to patients without schizophrenia, patients with schizophrenia had lower chance of receiving high overall quality of care (≥ 80% of recommended processes of care) for heart failure (Relative risk [RR] 0.67, 95% CI: 0.48-0.92), diabetes (RR 0.84, 95% CI: 0.79-0.89) and COPD (RR 0.82, 95% CI: 0.72-0.93) as well as lower chance of receiving individual disease-specific processes of care including treatment with beta-blockers (RR 0.87, 95% CI: 0.79-0.96) in heart failure care and measurement for albuminuria (RR 0.96, 95% CI: 0.93-0.99), eye examination at least every second year (RR 0.97, 95% CI: 0.94-0.99) and feet examination (RR 0.96, 95% CI: 0.93-0.99) in diabetes care. Diabetic patients with schizophrenia also had lower chance of receiving antihypertensive (RR 0.84, 95% CI: 0.73-0.96) and ACE/ATII inhibitors (RR 0.72, 95% CI: 0.55-0.94). In COPD care, patients with schizophrenia had lower chance of receiving LAMA/LABA medication (RR 0.92, 95% CI: 0.87-0.98), however, higher chance of treatment with non-invasive inhalation (RR 1.85, 95% CI: 1.61-2.12).

Quality of care for three medical comorbidities was suboptimal for patients with schizophrenia.

The authors have not supplied their declaration of competing interest.