Table 1.

Comparison of neck pain patients undergoing chiropractic treatment with and without dizziness at baseline

	Dizziness Present (N = 177)	Dizziness Absent (N = 226)	P value
Gender: % Female	75%	58%	0.001
Percentage Smokers: Yes	27%	18%	0.04
Pain medication: Yes	28%	30%	0.74
Trauma onset: Yes	15%	19%	0.32
Duration of complaint: Acute =< 4 Wks	35%	38.%	0.71
Subacute = 4 – 12 Wks	19.%	19%
Chronic = > 12 Wks	46%	44%
General Health:	Good = 54%	Good = 61%	0.35
	Average = 41%	Average = 35%
	Poor = 5%	Poor = 4%
Previous Episodes:
None	43%	45%	0.65
1-3	15%	16%
4 or More	41%	39%
	Mean (+/−SD) (N = 177)	Mean (+/−SD) (N = 226)
Age	41.3 (14.1)	42.9 (14.1)	0.28
Baseline Neck Pain NRS score (current)	6.3 (2.4)	5.7 (2.3)	0.011
Baseline Arm Pain NRS Score	2.9 (3.1)	1.8 (2.2)	0.0001
BQN 1 Pain (average past week)	6.0 (2.4)	5.6 (2.3)	0.052
BQN 2 Disability (ADL)	4.9 (3.0)	3.9 (2.7)	0.001
BQN 3 Disability (social activities)	4.2 (3.1)	3.2 (3.0)	0.002
BQN 4 Anxiety	6.3 (2.5)	5.2 (2.8)	0.0001
BQN 5 Depression	4.8 (3.1)	2.9 (3.0)	0.0001
BQN 6 Work, Fear Avoidance	5.4 (2.9)	4.2 (3.0)	0.0001
BQN 7 Locus of Control	5.4 (2.8)	4.7 (2.9)	0.03
BQN Total	36.4 (15.6)	29.9 (14.7)	0.0001

NRS = numerical rating scale for pain. ADL = activities of daily living. SD = standard deviation. N = number of patients. WKs = Weeks.