This is the protocol for a review and there is no abstract. The objectives are as follows:
To assess the effects of trained medical interpreters in face-to-face clinical settings for patients with low proficiency in the local language on:
the quality of communication between patient and provider (as a precondition for the utilisation of professional knowledge to provide quality health care);
the quality of health care, and health outcomes; and
the cost benefit, cost effectiveness and cost utility of interventions by trained medical interpreters.