Construct | Measure | Time (week) |
---|---|---|
Primary | ||
Disability | Roland Morris Disability Questionnaire (RMDQ) [3] | 0, 6, 12, 26, 52 |
Secondary | ||
Pain intensity | 11 point (0–10) Numerical Rating Scale [4] | 0, 6, 12, 26, 52 |
Weight | Objective weight measured to the nearest 0.1 kg [5] | 1, 12 |
Self-reported weight (kg) | 0, 6, 12, 26, 52 | |
Quality of life | 12-item Short Form Health Survey version 2 (0–100 scale) [6] | 0, 6, 12, 26, 52 |
Smoking status | Current smoker (y/n)a and how many cigarettes smoked per day; from the NSW Population Health Survey [7] | 0, 6, 12, 26, 52 |
Exploratory | ||
Physical activity | International Physical Activity Questionnaire (IPAQ) [8] | 0, 6, 12, 26, 52 |
Body mass index | Calculated using weight (kg) / height (m2) (height collected at baseline only) | |
Nutrition quality | 21-item Food Frequency Questionnaire of intake over the past month [9] | 0, 6, 12, 26, 52 |
Sleep quality | Item-6 from the Pittsburgh Sleep Quality Indexa [10] | 0, 6, 12, 26, 52 |
Pain self-efficacy | 2-item Pain Self-Efficacy Questionnaire (PSEQ-2) [11]. | 0, 6, 12, 26, 52 |
Psychological distress | Kessler 6 Psychological Distress Scale [12] | 0, 6, 12, 26, 52 |
Alcohol consumption | 2 items from the Alcohol Use Disorders Identification Test (AUDIT-C) [13] | 0, 6, 12, 26, 52 |
Economic and process | ||
Health care, medication and carer use | Self-reported inventory of health care, community/carer services and medication use for back pain over the last 6 weeksa | 0, 6, 12, 26, 52 |
Surgical services | 52 | |
Work absenteeism and presenteeism | 4 yes/no questionsa assessing patient reported appropriateness of, referral, consultation for, or receipt of surgical procedure Self-reported number of days off work due to back pain (absenteeism) and days at work despite feeling ill (presenteeism) | 0, 6, 12, 26, 52 |
Adverse events | Patient reported experience of new medical conditions or an exacerbation of an existing conditiona (yes/no, with open text). | 6, 12, 26, 52 |
Satisfaction | Patient reported overall satisfaction with the program using a 0–6 Likert scale (0 not at all satisfied, 6 extremely satisfied) | 12, 26 |