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Table 6 The final models for outcome measures during service, combining social and physical factors (odds ratios with 95% confidence intervals). Statistically significant findings are indicated with bold typing.

From: Low back pain in military recruits in relation to social background and previous low back pain. A cross-sectional and prospective observational survey

N = 982

LBP n = 345

LLBP n = 56

Leg pain n = 66

Exemption1 n = 65

IQ-score low

1.00

-

1.00

1.00

IQ-score medium

1.14 (0.73–1.79)

-

0.75 (0.35–1.61)

0.56 (0.25–1.25)

IQ-score high

1.00 (0.61–1.63)

-

0.24 (0.08–0.74)**

0.24 (0.08–0.76)*

Parents grade school

1.00

-

1.00

1.00

Parents high school

1.56 (1.01–2.42)*

-

1.05 (0.48–2.27)

1.14 (0.48–2.71)

Parents >12 years education

1.90 (1.21–2.99)**

-

1.06 (0.47–2.38)

1.40 (0.59–3.35)

Sedentary occupation

-

-

0.87 (0.42–1.79)

-

Years of school

-

-

-

0.91 (0.72–1.14)

Baseline Leg pain

-

-

3.14 (1.13–9.85)*

-

0 days with LBP previous year

1.00

1.00

1.00

1.00

1–7 days with LBP previous year

2.31 (1.49–3.59)**

1.11 (0.44–2.84)

0.79 (0.28–2.22)

2.33 (0.94–5.79)

8–30 days with LBP previous year

6.09 (3.78–9.84)**

2.47 (1.14–5.32)*

2.52 (1.28–6.20)**

1.78 (0.64–4.94)

>30 days with LBP previous year

6.18 (3.42–11.17)**

4.80 (2.13–10.84)**

3.28 (1.31–8.25)**

5.93 (2.37–14.83)**

  1. *: p < 0.05, **:p < 0.01