Table 4.

Final model for associations between social background variables and LBP during military service (odds ratios with 95% confidence intervals). Statistically significant findings are indicated with bold typing.

N = 982	LBP n = 345	Leg pain n = 66	Exemption n = 65
IQ-score low	1.00	1.00	1.00
IQ-score medium	1.02 (0.68–1.52)	0.72 (0.37–1.42)	0.56 (0.27–1.17)
IQ-score high	0.99 (0.64–1.53)	0.33 (0.13–0.88)*	0.26 (0.09–0.79)*
Parents grade school	1.00	1.00	1.00
Parents high school	1.58 (1.06–2.34)*	1.25 (0.62–2.54)	1.17 (0.54–2.55)
Parents >12 years education	1.81 (1.20–2.72)**	1.19 (0.56–2.49)	1.22 (0.54–2.76)
Sedentary occupation	0.84 (0.59–1.20)	0.69 (0.36–1.33)	-
Years of school	-	-	0.89 (0.71–1.10)

*: p < 0.05, **: p < 0.01