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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 4.

Results of multiple linear regression analyses examining the relationship between caudal LC contrast and global cortical thickness

Predictor β SE 95% CI t p
A. Full sample, F(3, 292)=35.77, p<.001, R2=0.269, adjusted R2=0.261
Caudal LC contrast −0.128 0.071 −0.266, 0.011 −1.81 .071
Age −0.461 0.055 −0.570, −0.352 −8.32 <.001
Caudal LC contrast * Age Group 0.135 0.071 −0.004, 0.275 1.91 .057
B. Older adults, F(2, 226)=3.31, p=.038, R2=0.028, adjusted R2=0.020
Caudal LC contrast 0.006 0.066 −0.123, 0.136 0.10 .922
Age −0.168 0.066 −0.298, −0.039 −2.56 .011
C. Younger adults, F(2, 64)=4.29, p=.018, R2=0.118, adjusted R2=0.091
Caudal LC contrast −0.275 0.118 −0.511, −0.039 −2.33 .023
Age −0.241 0.118 −0.477, −0.005 −2.04 .046

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.