If own price elasticity of demand for mental health services is -1.83, a 10 percent decrease in price of visits to mental health care services is associated with a 1.83 percent decrease in quantity of mental health services consumed by a patient O 1.83 percent increase in quantity of mental health services consumed by a patient O 18.3 percent decrease in quantity of mental health services consumed by a patient 18.3 percent increase in quantity of mental health services consumed by a patient