POAG was not associated with increased risk of developing AD. It cannot be excluded that this negative finding is due to diagnostic misclassification as register data were used.

schizophrenic patients with late- and very-late first-contact with the psychiatric hospital system are at two to three times higher risk of subsequently getting a diagnosis of dementia compared to patients with osteoarthritis and compared to the general population.

Although continued treatment with anticonvulsants and continued treatment with lithium was associated with a rather similar reduction in the rate of suicide, the results suggest that treatment with lithium may have some superiority in relation to prevention of suicide.

The present study has established that subjects with late-onset acute and transient psychosis are at 11 times higher risk of subsequently getting a diagnosis of dementia compared to patients with osteoarthritis, and at 8 times higher risk compared to the general population.

Very late first-contact delusional disorder increases the risk of subsequently getting a diagnosis of dementia 5-8 times compared with osteoarthritis patients and the general population.