Quality of life
Quality of life was assessed in three studies. In one study, the QOL-AD scale was used as primary outcome parameter [2]. Whereas two studies showed no difference between ginkgo and placebo in the 24-26 weeks evaluation for PDS [33] and QOL-AD [2], one study (Ihl R, Bachinskaya N, Korczyn AD, Tribanek M, Hoerr R, Napryeyenko O: Efficacy and Safety of a Once-Daily Formulation of Ginkgo biloba Extract EGb 761® in Dementia with Neuropsychiatric Features. A Randomized Controlled Trial, submitted) yielded a statistically significant superiority of ginkgo in the improvement of quality of life compared to placebo. There was an improvement of 3.4 points in the DEMQOL-proxy scale for the ginkgo group compared to a 1.4 improvement in the placebo group.