The multivariable computational regression model showing the aggregate relationship of factors related to the total time to adjust the value was built with adjusted R2 of 0.574 (p < 0.05) and has the following form: LN (Direct medical costs) = 14.503 + 0.557 * Surgical procedures + 0.001 * age + 0.053 * male + 0.045 * Number of treatment days + 0.095 * emergency + 0.067 * Hospitalization + 0.051 * Diabetes + 0.104 * Outpatient visits