Behaviour change among people with impaired glucose tolerance: Comparison of telephone-based and face-to-face advice.

Objectives: To develop, implement and compare two lifestyle services for people at risk of developing type 2 diabetes.

Methods: Two localities were selected to implement two different service delivery models, telephone-based and face-to-face, supporting people at risk of developing type 2 diabetes. Impact was assessed by comparing weight, fasting plasma glucose and oral glucose tolerance test (OGTT) results at baseline and six months later.