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Dementia with Lewy bodies (DLB) is a complex, multisymptom disorder. When making decisions regarding the treatment of DLB, the patient's quality of life (QoL) should always be the main consideration. To our knowledge, this is the first review article focusing on the QoL in DLB patients. We searched the PubMed database using the keywords “quality of life” and “dementia with Lewy bodies.” Previously, no specific instrument had been developed for assessing the QoL in DLB patients. Patients with DLB have a decreased QoL compared to patients with Alzheimer's disease, which is reportedly caused by several factors including level of independence in instrumental activities of daily living, whether the patient is living with the caregiver, apathy, delusion, and dysautonomia. The direct effect of visual hallucination, sleep, and movement disorders on the QoL in DLB patients has not been previously studied. The role of cognitive function on the QoL is still controversial. In a randomized controlled study, memantine may improve the QoL in PDD or DLB patients. We concluded that it is important to develop a specific instrument to assess the QoL in DLB patients. Furthermore, there is an urgent need for large clinical trials to identify factors associated with the QoL and how they can be managed.

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We explore whether our proposed proxies for stock price overshooting informativeness and the days falling into overbought (oversold) zones defined by the SOI over the total number of trading days in a year (hereafter referred to as OB-ratio [OS-ratio]) would be affected by the function of the board structure and by financial performance. Results show that firms with high OS-ratio (OBratio) are those with ill-functioning (well-functioning) board structures and inferior (superior) financial performance. Thus, we argue that our new proxies could be employed to gauge board structure function and even financial performance.