Table 6.

Multivariate analyses testing associations with the outcome variable. Significant findings written in bold.

Models	Variables tested	OR and 95% CI	• Sensitivity • Specificity • Numbers correctly classified • Area under the ROC
	General health	1.1 (0.6–2.1)
	BMI	1.4 (1.0–2.0)
	Other spinal pain past yr - yes < 30 d - yes > 30 d	0.7 (0.4–1.1) 1.0 (0.7–1.4)
Final minimal Finnish model, i.e. retaining the "best" variables	Leg pain	1.6 (1.2–2.1)	54%, 80%, 71%, 72%
	Better at 2nd visit	5.0 (3.6–7.1)
	BMI	1.4 (1.0–2.0)