Table 1

Measurement domains, survey tools and collection method used at each data collection time point
Variable Component Measurement tools/Questions Base line 6 mth 12 mth Type of administration
Demographic Measures Age at diagnosis
Health Insurance Postal survey
Age, Sex, Country of birth, Living Arrangement (Marital status), Education, Income, Employment status,
Ethnicity, Health Care Access,
Clinical Information Current Clinical Measures On insulin, since when, #/day, Most recent HbA1c,
Other medical treatments, past medical history Postal survey
List of prescribed medications, last dilated eye
exam/retinal photo, foot exam, Past medical history,
Health before, at and since diagnosis Pre-diagnosis; at diagnosis and post-diagnosis conditions Postal survey
Anthropometric Waist circumference (Novel Figure Finder Tape Measure) Collected by project team /or from clinical care provider (CCP)
Blood Pressure (Omron HEM-907 IntelliSense
professional digital blood pressure monitor)
Weight (Salter portable weighing scale, model 913)
Height (Portable Stadiometer Height Rod)
Pathology HbA1c,Total Cholesterol(TC), TC/HDL ratio Pathology for study/ CCP
Urine microalbumin, Fasting blood glucose, Trig, HDL, LDL,
Behavioural Physical Activity Single physical activity question (# minutes/week) Postal survey
Nutrition Cancer Council Food Frequency Questionnaire [22] FFQ
Smoking Current/ever smoked/ FFQ /SDSCA Postal survey
Alcohol Alcohol days/ quantity/ FFQ Postal survey
Self-care activities (SDSCA) Selfcare activities scale with Toobert, Fisher & Glasgow modifications [23,24] Postal survey
Medication Morisky 8-item [25,26] Postal survey
QOL Assessment of quality of life AQoL-8D [27] and EQ-5D™[28,29] Postal survey
Diabetes Distress Diabetes Distress Screening Instrument: DDS4 [30,31] Postal survey
Depression PHQ-9 [32] Postal survey
Mediators and Moderators Health literacy [33] Postal survey
Non-directive vs directive support [12]
Availability & satisfaction with diabetes-support from family, friends & health care team [34] Postal survey
Sources of Support Who are you supported by? Postal survey
Diabetes Knowledge Michigan Diabetes Research and Training Centre with modification to Australian context [35] Postal survey
Self-Efficacy Diabetes Self-Efficacy Scale [36] Postal survey
Use of diabetes services Health-care utilisation GP details, Travel time, waiting time Postal survey
Insurance, NDSS membership, DA-Vic membership, GP/ specialists/ health professionals visits over past 6 mths, ECG, vaccinations, hospital stays, etc. based on RACGP guidelines for T2DM management
Most recent HbA1c (self-report)
Cost of services
Clinical services Health care utilisation GPAQ ver 2.1 [37] Postal survey
Clinical care agreements (annual cycle of care, General
Practice Management Plan, Team Care Arrangement) Postal survey
Cost Effective Analysis # visits past 6 mths to diabetes clinician Postal survey
# visits past 6 mths to other clinicians
# visits past 6 mths for emergency/acute care
# overnight stays past 6 mths in hospital (related to your diabetes)
Peer Training/ Quality Improve. Training effectiveness Usefulness of training Postal survey
Extent of content covered
Process Evaluation 17 item assessment with 3 additional questions regarding most helpful, least helpful and suggestions to improve Postal survey
+ 2 questions asking availability of participant to other group members [38-40]

Riddell et al.

Riddell et al. BMC Public Health 2012 12:843   doi:10.1186/1471-2458-12-843

Open Data