Table 2.

The influence of the age and the length of employment on the presence of recurrent and chronic nsLBP.

Predictors	Recurrent nsLBP			Chronic nsLBP
	OR	95 CI	p	OR	95 CI	p
Age [years]	0.952∗∗	0.929 – 0.976	<0.001	1.072∗	1.037 – 1.168	<0.001
Lenght of employment [years]	0.951∗∗	0.928 – 0.974	<0.001	1.070∗	1.035 – 1.105	<0.001

OR-odds ratio,

∗The risk of nsLBP was significantly increased.

∗∗ The risk of nsLBP was significantly decreased (the univariate logistic regression model).