. Author manuscript; available in PMC: 2015 Mar 10.

Published in final edited form as: Scand J Work Environ Health. 2014 Nov 7;41(1):94–101. doi: 10.5271/sjweh.3466

Table 4.

Association of T1 weighted magnetic resonance imaging (MRI) indices with cumulative exposure, adjusted for age at baseline. [95% CI=95% confidence interval; SD=standard deviation.]

MRI score/ (mg/m³-days)	ß	95% CI	Within SD ^a	Between SD ^a
Caudate T1	0.31	0.14–0.48	1.5	1.8
Anterior putamen T1	0.25	0.10–0.41	1.3	2.3
Posterior putamen T1	0.22	0.08–0.36	1.2	2.9
Basal ganglia T1	0.18	0.06–0.29	1.0	2.3
Pallidal Index T1	−0.04	−0.22–0.14	1.6	2.3

From mixed effects restricted maximum likelihood (REML) regression.