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. 2024 Oct 17;20(12):8576–8594. doi: 10.1002/alz.14299

TABLE 2.

Multiple regression results of the linked independent component analysis components of interest (IC).

IC ∼ Group*Age2 + Gender + Total brain volume + Site
Model Group Gender Age Age2 Group:Age Group:Age2
IC Variance explained Adjusted R 2 p β p β p β p β p β p β p
IC1 14.23% 0.14 <0.001 −0.17 0.0048 −0.26 <0.001 −0.36 <0.001 0.012 0.74 −0.011 0.82 −0.0032 0.93
IC2 9.81% 0.59 <0.001 0.049 0.25 0.27 <0.001 −0.082 0.031 −0.0085 0.74 0.036 0.29 −0.0049 0.85
IC3 6.56% 0.34 <0.001 −0.080 0.14 0.090 0.075 −0.11 0.022 −0.029 0.38 −0.029 0.51 0.041 0.22
IC4 5.10% 0.27 <0.001 −0.078 0.17 0.067 0.21 −0.13 0.012 0.032 0.36 −0.13 0.0051 0.034 0.33
IC5 4.09% 0.16 <0.001 0.060 0.33 −0.052 0.36 −0.29 <0.001 0.038 0.31 −0.092 0.062 −0.013 0.73
IC6 3.42% 0.12 <0.001 −0.067 0.28 −0.16 0.0067 −0.15 0.0058 0.038 0.31 −0.084 0.10 0.068 0.077
IC7 2.18% 0.20 <0.001 0.012 0.84 −0.024 0.66 −0.20 <0.001 0.075 0.040 −0.085 0.075 0.028 0.44
IC8 1.91% 0.050 0.013 0.11 0.10 0.26 <0.001 0.050 0.38 0.054 0.17 −0.039 0.45 −0.035 0.38
IC9 2.14% 0.47 <0.001 −0.068 0.16 −0.62 <0.001 −0.30 <0.001 −0.049 0.10 0.025 0.53 0.032 0.28
IC12 2.13% 0.79 <0.001 0.040 0.18 0.12 <0.001 −0.017 0.53 −0.024 0.20 −0.0031 0.90 −0.026 0.17
IC13 1.02% 0.038 0.039 −0.036 0.58 −0.0081 0.89 0.072 0.22 −0.11 0.0061 −0.0035 0.95 0.022 0.58
IC15 2.63% 0.10 <0.001 0.039 0.54 −0.12 0.047 0.0087 0.88 0.042 0.27 −0.048 0.35 0.0059 0.88
IC16 1.14% 0.28 <0.001 0.031 0.59 −0.22 <0.001 0.24 <0.001 0.074 0.032 0.073 0.11 0.022 0.53
IC17 2.38% 0.33 <0.001 −0.013 0.81 −0.12 0.018 −0.082 0.093 −0.0083 0.80 0.0092 0.84 −0.016 0.63
IC20 1.81% 0.063 0.0032 0.013 0.85 0.070 0.24 −0.10 0.10 0.029 0.46 −0.0016 0.98 −0.018 0.65
IC23 1.47% 0.053 0.0096 0.050 0.44 −0.050 0.41 0.053 0.36 −0.0083 0.83 −0.088 0.093 −0.030 0.45
IC26 1.59% 0.037 0.043 −0.012 0.85 0.22 <0.001 0.075 0.20 −0.0034 0.93 −0.039 0.46 −0.015 0.70
IC29 1.45% 0.066 0.0024 0.025 0.70 0.046 0.44 0.12 0.033 0.066 0.10 0.017 0.74 0.042 0.28
IC31 1.22% 0.067 0.0022 0.0084 0.90 −0.10 0.10 −0.065 0.26 −0.067 0.090 −0.088 0.093 −0.00040 0.99
IC33 1.17% 0.039 0.036 −0.082 0.21 −0.021 0.73 0.0039 0.95 −0.052 0.20 −0.033 0.54 0.032 0.42

Note: p‐values in bold are statistically significant.