An analysis of hip fracture treatments in Japan by the discrete-type proportional hazard and ordered probit models. - Kazumitsu Nawata; Ayako Nitta; Sonoko Watanabe; Koichi Kawabuchi (Math. Comput. Simul., 2008)

An analysis of the length of hospital stay for cataract patients in Japan using the discrete-type proportional hazard model. - Kazumitsu Nawata; Masako Ii; Aya Ishiguro; Koichi Kawabuchi (Math. Comput. Simul., 2009)

Evaluation of the DPC-based inclusive payment system in Japan for cataract operations by a new model. - Kazumitsu Nawata; Koichi Kawabuchi (Math. Comput. Simul., 2013)

Corrigendum to "Evaluation of the DPC-based inclusive payment system in Japan for cataract operations by a new model" [Math. Comput. Simulation 93 (2013) 76-85]. - Kazumitsu Nawata; Koichi Kawabuchi (Math. Comput. Simul., 2015)