Table 2.
Baseline and annual tau SUVR change (cerebellar cortex reference region).
| ROI | CU Aβ− (n = 89) |
CU Aβ+ (n = 44) |
MCI Aβ+ (n = 26) |
AD Aβ+ (n = 25) |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Baseline SUVR | Δ SUVR/yr | Baseline SUVR | T stat | d | Δ SUVR/yr | T stat | d | Baseline SUVR | T stat | d | Δ SUVR/yr | T stat | d | Baseline SUVR | T stat | d | Δ SUVR/yr | T stat | d | |
| Me | 0.89 ± 0.16 | 0.0088 ± 0.0444 | 1.18 ± 0.29∗∗∗ | 6.33 | 1.34 [1.00–1.80] | 0.0587 ± 0.0727∗∗∗ | 4.19 | 0.90 [0.52, 1.28] | 1.53 ± 0.60∗∗∗ | 5.39 | 2.03 [1.51–2.53] | 0.0169 ± 0.0884 | 0.45 | 0.14 [-0.30, 0.58] | 1.90 ± 0.69∗∗∗ | 7.25 | 2.89 [2.30–3.46] | 0.0313 ± 0.1885 | 0.59 | 0.24 [-0.21, 0.68] |
| MT | 0.96 ± 0.14 | 0.0100 ± 0.0417 | 1.25 ± 0.29∗∗∗ | 6.20 | 1.41 [1.00–1.80] | 0.0615 ± 0.0766∗∗∗ | 4.17 | 0.93 [0.55, 1.30] | 1.70 ± 0.76∗∗∗ | 4.97 | 1.196 [1.45–2.46] | 0.0393 ± 0.1068 | 1.37 | 0.47 [0.03, 0.91] | 2.33 ± 0.86∗∗∗ | 7.94 | 3.28 [2.66–3.90] | 0.0817 ± 0.2371 | 1.51 | 0.62 [0.17, 1.07] |
| Te | 1.02 ± 0.13 | 0.0061 ± 0.0460 | 1.18 ± 0.24∗∗∗ | 4.16 | 0.92 [0.54–1.30] | 0.0484 ± 0.0771∗∗∗ | 3.36 | 0.73 [0.36, 1.10] | 1.62 ± 0.73∗∗∗ | 4.14 | 1.64 [1.15–2.12] | 0.0523 ± 0.1111∗ | 2.07 | 0.70 [0.25, 1.14] | 2.74 ± 1.36∗∗∗ | 6.34 | 2.70 [2.13–3.26] | 0.1274 ± 0.2690∗ | 2.24 | 0.93 [0.46, 1.38] |
| R | 0.88 ± 0.11 | −0.0007 ± 0.0337 | 0.94 ± 0.14∗∗ | 2.44 | 0.45 [0.08–0.82] | 0.0235 ± 0.0661∗ | 2.29 | 0.52 [0.15, 0.88] | 1.21 ± 0.57∗∗ | 2.85 | 1.12 [0.66–1.58] | 0.0365 ± 0.0911∗ | 2.04 | 0.71 [0.27, 1.16] | 1.71 ± 0.91∗∗∗ | 4.53 | 1.91 [1.39–2.41] | 0.1194 ± 0.1854∗∗ | 3.23 | 1.32 [0.84–1.80] |
Baseline tau SUVR and annual tau SUVR change per year (Δ SUVR/year), normalised to the cerebellar cortex. T stat = t statistic from a one-tailed t-test comparing the Aβ+ clinical groups against the CU Aβ− group, ∗p ≤ 0.05, ∗∗p ≤ 0.01, ∗∗∗p ≤ 0.001. Effect size = Cohen's d, point estimate [95% confidence interval].
Abbreviations: Me = mesial temporal; MT = meta-temporal; Te = temporoparietal; R = rest of neocortex.