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Table 1 Theory matrix

From: Living Well with Diabetes: a randomized controlled trial of a telephone-delivered intervention for maintenance of weight loss, physical activity and glycaemic control in adults with type 2 diabetes

Social-Cognitive Theory Constructs Operationalization
Self-efficacy Realistic and measurable goal-setting
  Assessing confidence
  Self-monitoring
  Practicing positive self-talk
Social support Developing a support network (family/friends/others)
  Setting goals around using supports
Outcome expectancies Benefits and barriers to health behaviour change
  Problem-solving approach to addressing barriers
  Rewards for goal attainment