Effectiveness of mechanical traction as a non-surgical treatment for carpal tunnel syndrome compared to care as usual: study protocol for a randomized controlled trial

Table 1 Measurements and time points

		Measurement time points
Measure	Questionnaire	T0	V1	V2	T1	T2	T3
Patients’ background (demographics, clinical)	-	X			X	X	X
CTS symptom severity and functional status	BCTQ	X	X	X	X	X	X
Quality of life	WHOQOL-BREF	X		X	X	X	X
Depression and anxiety	PHQ-4	X	X	X	X	X	X
Health related resource utilization	Non-standardized	X					X
Absenteeism from work	Non-standardized	X			X	X	X

T0 = baseline, V1 = 3 weeks (only intervention group), V2 = 6 weeks (only invention group), T1 = 3 months, T2 = 6 months, T3 = 12 months, BCTQ = Boston Carpal Tunnel Questionnaire, WHOQOL-BREF = World Health Organization Quality of Life questionnaire abbreviated version, PHQ-4 = Patient Health Questionnaire-4.