In order to study factors affecting the use of the ambulatory physician services, Andersen´s model for health utilization was modified by adding the health behavior component and examined with three different approaches. Three different approaches were the multiple regression model, logistic regression model, and LISREL model. For multiple regression, dependent variable was reported illness-related visits to a physician during past one year and independent variables are various variables measuring predisposing factor, enabling factor, need factor and health behavior. For the logistic regression, dependent variable was visit or no-visit to physician during past one year and independent variables were same as the multiple regression analysis. For the LISREL, five endogenous variables of health utiliztion, predisposing factor, enabling factor, need factor, and health behavior and 20 exogeneous variables which five endogenous variables which measures five endogenous variables were used.
According to the multiple regression analysis, chronic illness, health status, perceived health status of the need factor ; residence, sex, age, marital status, education of the predisposing factor; health insurance, usual source for medical care of enabling factor were the significant exploratory variables for the health utilization. Out of the logistic regression analysis, health status, chronic illness, residence, marital, education, drinking, use of health aid were found to be significant exploratory variables. From LISREL model, age, education, and residence for predisposing factor; health status, chronic illess, and perceived health status for need factor´ medical insurance for enabling factor; and doing any kind of health behavior for the health behavior were found as the significant observed variables for each theoretical variables.
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