Table 3

Determinants of low back pain at 12 months after finishing training

Variable		Unadjusted				Adjusted^3-150
Variable		OR	95% CI			OR	95% CI
Baseline low back pain:
None	1.0	Reference		1.0	Reference
Some	2.82	1.75 to 4.55		1.96	1.09 to 3.53
Low back pain during training:
None	1.0	Reference		1.0	Reference
Once	1.53	0.74 to 3.17		1.57	0.71 to 3.47
Recurrent	5.92	3.30 to 10.61		6.36	3.18 to 12.73
Uncertain^3-151	1.90	1.00 to 3.60		1.89	0.66 to 5.40
Current general health questionnaire:
Low	1.0	Reference		1.0	Reference
High	2.91	1.75 to 4.83		2.68	1.42 to 5.07
Mean job dissatisfaction	1.01	0.99 to 1.02		0.98	0.95 to 1.00
Working as nurse:
Yes	1.0	Reference		1.0	Reference
No	0.56	0.31 to 0.99		0.39	0.17 to 0.90