Table 2.

Overview of the measurements and timing of measurements.

Domain	Questionnaire	Base line	2 months	6 months	12 months
Demographic characteristics	Purpose built	✓	–	–	–
Disability in people with low back pain	ODI	✓	✓	✓	✓
Disability in people with neck pain	NDI	✓	✓	✓	✓
Perceived recovery	GPE	–	✓	✓	✓
Pain intensity	NPRS	✓	✓	✓	✓
Depressive symptoms	PHQ-9	✓	✓	–	✓
Anxiety symptoms	GAD-7	✓	✓	–	✓
Fear of movement	TSK	✓	✓	–	✓
Self-efficacy	Pearlin	✓	✓	–	✓
Pain catastrophising	PCL	✓	✓	–	✓
Neurophysiology of pain knowledge	NPQ	✓	✓	–	✓
Quality of life	SF-12	✓	✓	–	✓
Therapeutic alliance	WAI-SF	–	✓	–	–
Healthcare utilisation	Tic-P	✓	✓	–	✓

GAD-7, Generalised Anxiety Disorder scale 7-item version; GPE, Global Perceived Effect; NDI, Neck Disability Index; NPQ, Neurophysiology of Pain Questionnaire; NPRS, Numerical Pain Rating Scale; ODI, Oswestry Disability Index; PCL, pain catastrophizing list; Pearlin, Pearlin Mastery Scale; PHQ-9, Patient Health Questionnaire 9-item version; SF-12, Short Form 12-item version; Tic-P, Trimbos/iMTA questionnaire for Costs Associated with Psychiatric Illness; TSK, Tampa Scale of Kinesophobia; WAI-SF, Working Alliance Inventory-Short Form.