The development of 'Quality of Life Instrument for Indian Diabetes patients (QOLID): a validation and reliability study in middle and higher income groups.

Purpose: To develop a reliable and valid quality of life questionnaire for Indian patients with diabetes.

Methods: A draft of 75 questions was prepared on the basis of expert opinion, focus group discussions, review of existing literature and detailed semi-structured interviews of patients with diabetes with the intention of including all aspects of diabetes-specific and quality of life considered relevant by patients and care providers to enable constrict validity. A Stage 2 questionnaire was then prepared with 13 domains and 54 items (questions) after expert panel review for obvious irrelevance and duplication of issues.