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. Author manuscript; available in PMC: 2022 Mar 15.
Published in final edited form as: Brain Res. 2021 Jan 7;1755:147263. doi: 10.1016/j.brainres.2020.147263

Table 2:

Statistical results for multivariable linear regression model testing the effect of group on the association between chronological age and predicted brain age. The dependent variable was brain age and the healthy control group was used as reference.

ß with 95% confidence interval t-statistic p-value
ß Lower Bound Upper Bound
Intercept 48.393 47.493 49.292 107.72 <0.001*
Chronological Age 0.283 0.152 0.414 4.32 <0.001*
Female sex −0.68 −1.559 0.199 −1.55 0.127
CLBP 0.789 −0.085 1.662 1.81 0.076
CLBP * Chronological Age 0.145 0.014 0.276 2.22 0.031*