We assessed the daily emergency characteristics of external causes taken to hospital in Osaka using the call-out records of the Osaka City Emergency Service for the year 1990, 1995, 2000 and 2005. According to the occurrence and spread of the daily emergency in these areas for elementary school administrative districts with consideration to time of day, place of occurrence and ages, following 3 aspects were obtained.
1. The elderly, especially over 75 years old are most dangerous and twice as much as 1990.
2. Domestic accidents are relatively correlative to the elderly, especially without their family (by themselves) and old housing constructed before 1980.
3. Accidents of outside home relatively have correlation with the commercial buildings and day time population.
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