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 | ✓ | ✓ | ✓ | Postal survey | ||
QOL | Assessment of quality of life | ✓ | ✓ | ✓ | Postal survey | |
Diabetes Distress | ✓ | ✓ | ✓ | 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] |