We investigate the impact of ownership structure on trading volume reaction to earnings announcements using a sample of Japanese companies. Our primary tests focus on differential trading activities carried out by three types of shareholders in response to earnings announcements: corporate...

In this paper, we report the result of investigation into the impact of institutional characteristics on return–earnings associations in Japan. It is found that the strength of return–earnings associations in Japan is inversely affected by the extent to which a firm's shares are cross-held,...

To analyze possible factors associated with prolonged length of stay (LOS) in hip fracture patients in Japan, such as the availability of beds in medical and nursing care facilities at the community level, as well as patient factors, clinical factors and hospital structural characteristics.

To investigate the associations of hospital competition and number of cardiologists per hospital (indicating the decentralization and centralization of healthcare resources, respectively) with 30-day in-hospital mortality, healthcare spending, and length of stay (LOS) among patients with acute...