Can a Traditional Korean Manual Therapy Be a Complementary and Alternative Strategy for Cervicogenic Dizziness? A Study Protocol for a Randomized Controlled Trial

Table 1

Study timetable.

	Screening	Randomization	Treatment
Visits	V1	V2	V3	V4-V5	V6	V7	V8-V9	V10-V11	V12	V13
Time point	−1 W	Day 0	1 W ± 2 D	2 W ± 2 D	3 W ± 2 D		4 W ± 2 D	5 W ± 2 D	6 W ± 2 D
Enrollment:
Informed consent	×
Demographics	×
Physical examination	×
Vital signs	×
Pregnancy test	×
Medical history	×
Concomitant medication	×	×	×	×	×	×	×	×	×	×
CNS examination	×
Nystagmus examination	×
Eligibility assessment	×
Random allocation		×
Interventions:
CMT (twice/week)
UC (twice/week)
Assessments:
DHI	×	×				×				×
MVS		×				×				×
VAS		×				×				×
Frequency		×				×				×
PI-NRS		×				×				×
NDI		×				×				×
CROM		×				×				×
GPE										×
K-PSS		×				×				×
EQ-5D		×				×				×
New BI										×
Adverse events		×	×	×	×	×	×	×	×	×

BI, blinding index; CMT, Chuna Manual Therapy; CNS, central nervous system; CROM, cervical range of motion; DHI, Dizziness Handicap Inventory; EQ-5D, EuroQol Five-Dimension Questionnaire; GPE, global perceived effect; K-PSS, Korean version of Perceived Stress Scale; MVS, mean vertigo scale; NDI, neck disability index; PI-NRS, Pain Intensity Numerical Rating Scale; UC, usual care; V, visit; VAS, visual analog scale; W, week.