Skip to main content

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