Risk factors for back pain in marines; a prospective cohort study

Table 3 Multiple regression analyses: odds ratio for back pain within 6 and 12 months of baseline

	Back pain within 6 months			Back pain within 12 months
	OR	95 % CI	p-value	OR	95 % CI	p-value
Body height (m)
< 1.86	1.00	Reference	.	1.00	Reference	.
≥ 1.86	2.81	1.16–6.84	0.022	2.75	1.21–6.29	0.016
Previous back pain ^a
No	1.00	Reference	.	1.00	Reference	.
Yes	2.99	1.22–7.30	0.016	6.75	2.30–19.80	0.001
Previous lower extremity pain ^a
No	1.00	Reference	.	.	.	.
Yes	2.32	1.02–5.24	0.044	.	.	.
Sitting work
< 1/2 work day	1.00	Reference	.	.	.	.
≥ 1/2 work day	2.78	1.06–7.32	0.038	.	.	.
Double leg lift-lower
Pass	1.00	Reference	.	.	.	.
Fail	0.32	0.12–0.82	0.018	.	.	.

odds ratio (OR) with corresponding 95 % confidence interval (95 % CI) and significance level (p-value) for back (lumbar and thoracic) pain within 6 and 12 months of baseline
^aPain within 6 months prior to baseline
^.Category not applicable

ISSN: 1471-2474