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Table 1 Primary and secondary outcome measures for times 1, 2 and 3

From: Randomised controlled trial of an automated, interactive telephone intervention to improve type 2 diabetes self-management (Telephone-Linked Care Diabetes Project): study protocol

Variable Instrument
Primary outcome variables
Glycaemic control HbA1c
Quality of life SF-36v2 [24, 25]
Secondary outcome variables
Blood lipids Total cholesterol, LDL cholesterol, HDL cholesterol, triglycerides
Insulin sensitivity HOMA score
Kidney function Creatinine and estimated Glomerular Filtration Rate (e-GFR)
Blood pressure Measured twice using Welch-Allyn electronic sphygmomanometer on same arm. A third measure is taken when the first two readings differ by more than 10 mmHg and 6mmHg for systolic and diastolic blood pressure respectively.
Body Mass Index (BMI) Calculated from height and weight measured by research staff
Waist and hip circumference Measured by research staff according to WHO MONICA project guidelines [23]
Diet Anti Cancer Council of Victoria Food Frequency Questionnaire [30] (ACCVFFQ)
Physical activity Active Australia Survey [29]
Self-efficacy (nutrition and physical activity) Self-efficacy scales [28]
Anxiety and depression Hospital Anxiety and Depression Scale [26]
Social support ENRICHD Social Support Inventory [27]
Smoking Self-report
Adherence to recommendations for blood glucose testing, foot-care and medication Summary of Diabetes Self-Care Activities [31]
Health care service utilisation, except hospital admissions Self-report for visit to health professionals, usage of hospital services not involving admissions and medications
Hospital admissions Electronic records maintained by Queensland Health, plus self-report for admissions to private hospitals
Co-morbidities Self-report