Table 3.

Non-authorized medications

	Frequency (%)	95% CI
Ginkgo biloba or any agent intended to improve cognition*	16.7	11.83, 22.50
Medication for reducing cardiovascular or cerebrovascular events (e.g. warfarin)	11.2	7.25, 16.36
Systemic immunosuppression	5.4	2.71, 9.40
Anticonvulsant	3.9	1.70, 7.54
Medication for mood disorder	1.5	0.30, 4.22
Neuroleptic	1.0	0.12, 3.48
Medication for parkinsonian symptoms	0.5	0.01, 2.69

Patients may have been taking several non-authorized medications. CI confidence interval.

^*No patient was excluded due to only Ginkgo biloba (or any agent intended to improve cognition).