Table 4.

Physical exposure and odds of back injury & LBP at follow-up. Values are based on the fully-adjusted model and presented as odds ratios (OR) and differences between least square means (LSM), respectively. CI; confidence intervals

	Back Injury		LBP
Exposure	OR (95% CI)	p-value	LSM (95% CI)	p-value
2nd & 3rd quartiles (comparator)	1		1.81
1st quartile	1.14 (0.52–2.51)	0.7367	− 0.50 (− 0.89 - (− 0.13))	0.0085
4rd quartile	1.36 (0.63–2.92)	0.4309	− 0.19 (− 0.57–0.18)	0.2967

Adjusted for age, body mass index, smoking, education, physical activity, LBP, back injury, frequency of patient transfer and number of participating personnel, patient self-reliance, seniority, working hours, overall mental health and work-related attitudes towards justice, teamwork, influence, emotional demands, clarity of tasks as well as management recognition and support