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. Author manuscript; available in PMC: 2022 Apr 1.
Published in final edited form as: Neurobiol Aging. 2020 Dec 29;100:72–82. doi: 10.1016/j.neurobiolaging.2020.12.019

Table 3.

Results of multiple linear regression analyses examining the relationship between rostral locus coeruleus contrast and global cortical thickness

Predictor β SE 95% CI t p
A. Full sample, F(3, 292)=38.98, p<.001, R2=0.286, adjusted R2=0.279
Rostral LC contrast 0.088 0.060 −0.029, 0.204 1.48 .139
Age −0.503 0.051 −0.602, −0.403 −9.93 <.001
Rostral LC contrast * Age Group 0.103 0.059 −0.013, 0.220 1.75 .082
B. Older adults, F(2, 226)=9.08, p<.001, R2=0.074, adjusted R2=0.066
Rostral LC contrast 0.214 0.064 0.088, 0.341 3.35 <.001
Age −0.163 0.064 −0.289, −0.036 −2.54 .012
C. Younger adults, F(2, 64)=1.46, p=.240, R2=0.044, adjusted R2=0.014
Rostral LC contrast 0.002 0.124 −0.246, 0.250 0.01 .990
Age −0.209 0.124 −0.457, 0.039 −1.69 .097

Note. Regression coefficients and standard errors are standardized values. Age group was coded as: older adults = 1, younger adults = −1. CI = confidence interval; LC = locus coeruleus; SE = standard error.