Objective :
The study designed to analyze annual, seasonal utilization patterns of outpatients in ophthalmology & otolaryngology & dermatology clinic of Korean Medical hospital for the past 4 years. The study goes toward to establish base data of Korean medical health care policy of ophthalmology & otolaryngology & dermatology diseases, creation of direction and future plan, which increases accessibility of Korean medical treatment to patients.

Methods :
We investigated annual, seasonal population-social characteristics such as sex or age, departmental characteristics such as ophthalmology, otolaryngology, dermatology, many others, main diagnosis, cost characteristics of treatment period and frequency of treatment those who were received treatment as outpatients in Dunsan Korean Medical Hospital ophthalmology & otolaryngology & dermatology clinic from March 2012 to March 2016. The data was obtained from EMR chart, and statistical analysis was performed using SPSS 19.0.

Results :
1. Analysis of population-social characteristics of new patients in the year
1) In the analysis of the number of patients of the year and department, the number of patients for the past 4 years is not much difference in the year, but there is a distinction in the department. And dermatology is the most outstanding group of the number of patients.
2) In the analysis of the number of patients of the year and sex, the number of patients for the past 4 years is not much difference in the year, but there is a distinction in the sex. And women outnumber men.
3) In the analysis of the number of patients of the year, department and sex, the number of patients for the past 4 years is not much difference in the year but there is a distinction in the department and sex.
4) In the analysis of the number of patients of the year and age, the number of patients for the past 4 years is a distinction in the year and age. In 2015 and 40''s, the number of patients is the most.
5) In the analysis of the number of patients of the year, department and age, the number of patients for the past 4 years is a distinction in the year, department and age.


2. Analysis of population-social characteristics of new patients in the season
1) In the analysis of the number of patients of the season and department, the number of patients for the past 4 years is not much difference in the season but there is a distinction in the department. And dermatology is the most group of the number of patients.
2) In the analysis of the number of patients of the season and sex, the number of patients for the past 4 years is not much difference in the season but there is a distinction in the sex. And women outnumber men.
3) In the analysis of the number of patients of the season, department and sex, the number of patients for the past 4 years is not much difference in the season but there is a distinction in the department and sex.
4) In the analysis of the number of patients of the season and age, the number of patients for the past 4 years is not much difference in the season, but there is a distinction in the age.

3. Analysis of utilization of new patients in the year
1) In the analysis of the number of patients from the year and main diagnosis, the number of patients for the past 4 years is not much difference in the year but there is a distinction in the main diagnosis.
2) In the analysis of the average treatment period of the year and main diagnosis, there is a distinction in the average treatment period of the year and main diagnosis.
3) In the analysis of the frequency of treatment of the year and main diagnosis, there is a distinction in the frequency of treatment of the year and main diagnosis.

Conclusion :
In the analysis of annual, seasonal utilization patterns that outpatients offered in ophthalmology & otolaryngology & dermatology clinic of Korean Medical hospital for the past 4 years, the report draws 3 different conclusions.