From: Physical characteristics of the back are not predictive of low back pain in healthy workers: A prospective study
Asymptomatic workers
Mildly symptomatic workers
LBP at t1
n
%
RR
95%CI
P-value
Combined variable
Normal
156
7.7
1.00
0.591
173
15.6
Abnormal
171
9.4
1.22
(0.60 – 2.49)
146
15.8
1.01
(0.61 – 1.68)
0.971