Publications by authors named "Motoko Nishina"
Objectives: This study aimed to investigate the clinical characteristics of polymyositis/dermatomyositis (PM/DM) in Japan by analyzing data from the nationwide registration system.
Methods: The data of the registration system in 2009 were analyzed to investigate patient numbers, sex, clinical symptoms, therapies, complications, and prognosis of PM/DM.
Results: The total number of PM/DM cases was approximately 17,000, and the female/male sex ratio was 2.
Objectives: To investigate the effect of determining birthdays by social factors on the distribution of daily live births.
Methods: We obtained data on live births tabulated by date and birthplace (hospitals, clinics, and maternity homes) between 1981 and 2010 in Japan from the National Vital Statistics System. This study analyzed the variations in live births for each day of the week, as well as for several specific days observed to have a systematic variation in the number of live births.
Objectives: To estimate the number of patients with polymyositis/dermatomyositis (PM/DM) in Japan and the prevalence rate and incidence rate of the disease.
Methods: The electronic database in the nationwide registration system on intractable diseases from 2003 to 2010 was utilized to identify the number of prevalent and incident cases of PM/DM. The electronic data entry rate was used to establish the total number of registered cases.
Objectives: The aim of this study was to describe age, gender distribution, and age at onset of systemic lupus erythematosus (SLE), polymyositis/dermatomyositis (PM/DM), and systemic sclerosis (SSc) in Japan.
Methods: We used epidemiological information on 21,405, 6,327, and 10,058 patients with SLE, PM/DM, and SSc, respectively, in a Japanese nationwide registration database of patients with intractable diseases.
Results: All three diseases occur predominantly in women, with the female-to-male ratio being 8.
Objective: We examined a clinical database for patients receiving financial aid for treatment to elucidate age at onset of intractable disease.
Methods: Data were obtained from the clinical database of patients receiving financial aid for treatment in 2003. Age at onset of disease was calculated by subtracting the year of birth from the year of onset as registered in the database.
Purpose: Nationwide surveys of intractable disease patients receiving public financial aid for treatment were performed by Research Committee for Epidemiology of Intractable Disease (Ministry of Health and Welfare, Japan) 4 times in the past, in 1984, 1988, 1992 and 1997. The purpose of the present study was to clarify the features of continuance with intractable disease patients receiving public financial aid for treatment.
Methods: Individual information collected by each nationwide survey was linked using the disease, the residence, the sex, and the birth date.
Objectives: In order to clarify the characteristics of medical institutions visited by patients with selected intractable diseases, we analyzed data from the fourth nationwide survey in 1997.
Methods: We asked 47 prefectural governments to provide data concerning every patient receiving financial aid for treatment of 39 selected intractable diseases from April 1997 to March 1998. Out of 399,719 whose information was reported by prefectural governments, we analysed data of 370,232 patients whose medical institutions were reported.
Objective: In order to clarify epidemiologic features of selected intractable diseases, an investigation of the fourth nationwide survey, in 1998, was performed.
Methods: We asked 47 prefectural governments to provide data concerning every patient receiving financial aid for treatment of 39 selected intractable diseases from April 1997 to March 1998. The items for each patient required were the beginning year of the financial aid, the disease code, sex, date of birth, residence, type of insurance, whether an in-patient or outpatient, medical institution and the clinical division where the patient was treated.