Table 3.

Odds ratios for scoring in the medium or high-risk STarT Back subgroups based on select explanatory variables^a

Explanatory Variable	OR	95% Confidence Interval	p-value
Average pain in past 2 weeks	1.8c	(1.4, 2.3)	<  0.001
Most severe pain in past 2 weeks	1.3c	(1.0, 1.6)	0.02
Primary symptom area
Low back painb	–	–
Neck pain	1.0	(0.5, 2.1)	1.00
Mid-back	0.2c	(0.1, 0.7)	0.02
> 1 area of complaint	0.4	(0.1, 1.1)	0.11
Other	0.3	(0.1, 1.3)	0.07
Employment status
Full-timeb	–	–
Part-time	0.2c	(0.1, 0.5)	<  0.001
Full-time student	0.3c	(0.1, 0.7)	0.01
Unemployed	0.0c	(0.1, 0.7)	0.02

^aHosmer and Lemeshow Test p-value = 0.799

^bReferent category

^cindicates statistical significance at alpha = 0.05 level