. 2024 Feb 23;25:145. doi: 10.1186/s13063-024-07975-4

Table 2.

Outcomes, additional variables and follow-ups

		Timepoints/Follow-ups
		t₀	t_a^a	t₁	t₂	t₃	t₄
Outcome variables
Primary	Characteristic pain intensity	X		X	X	X	X
	Disability score	X		X	X	X	X
	Patient-related satisfaction			X	X	X	X
Secondary	Psychological distress	X		X	X	X	X
	Health-related quality of life	X		X	X	X	X
	Catastrophizing	X		X	X	X	X
	Number of sick leave days^b
	Sickness allowance^b
	Treatment costs^b
Additional variables
*Control*	Therapy expectation	X
*Process*	Physical activity	X	X	X	X		X
	Flexible self-regulation	X	X	X	X		X
	Health literacy	X	X	X	X		X

^aAdditional follow-up for control and process variables, 5th week of intervention

^bData is available 6–9 months after treatment delivery