Table 1

Baseline characteristics of patients.

Treatment Strategies 1	Ch	PT
Subjects	55%	45%
Mean age (SD)	41.4 (11.6)	40.5 (11.9)
Percent Women	60%	65%
Smokers	36%	31%
History of LBP	72%	70%
Previously treated for LBP	24%	35%
Duration of sick leave before treatment
≤1wk	61%	58%
1–4 wk	37%	33%
Current episode of LBP
≤6 wk	55%	48%
Using pain medication	20%	26%
Sick leave
After treatment	40%	43%
At 6 mo	48%	46%
No of treatment sessions of Ch or Pt0-6 months	4.9	6.4

¹ Ch represents Chiropractic, Pt represents physical Therapy.