In-hospital cases per prescription case.

The figure depicts the ratio between the number of patients with in-hospital diagnoses per claimed prescriptions meaning the ratio between primary and secondary diagnosis. It shows a significant decrease throughout the period from 1996 to 2018, suggesting that an increasing share of patients are diagnosed in the secondary sector. Solid lines represent the regression fit. Shaded areas represent the 95-% confidence limits. Dotted lines represent the 95-% prediction limits.