Skip to main content
. 2021 Jun 1;81(3):1211–1229. doi: 10.3233/JAD-210137

Table 7.

Determinants of attention/processing speed at the end of study: LnTrail_making_A_2, placebo group*

Variable Pearson correlation Multiple regression#
(n = 78–110)
Model 1 Model 2 Model 3 Model 4 Model 5 Model 6
β p β p β p β p β p β p β p
LntHcy-_1 0.38 0.000 0.32 0.008 0.32 0.008 0.31 0.014 0.31 0.014 0.26 0.028
LnPOase_1 0.16 0.120 0.16 0.453 0.14 0.148
LnPhAcase_1 0.14 0.163 0.24 0.015 0.19 0.055
PON1-Q192R 0.08 0.434 0.19 0.049 0.13 0.193 –0.02 0.295
LnAnti-N-Hcy_1 –0.02 0.877 0.24 0.025 0.27 0.011 0.26 0.020 0.24 0.028 0.25 0.025 0.28 0.011
LnAtrophy_rate 0.34 0.002 0.30 0.007 0.30 0.007 0.28 0.013 0.29 0.013 0.29 0.010 0.29 0.011
LnTrail_making_A _1 0.52 0.000 0.32 0.001 0.32 0.001 0.29 0.003 0.29 0.003 0.28 0.004 0.30 0.003
Age 0.37 0.000 0.31 0.005 0.31 0.005 0.32 0.005 0.32 0.006 0.32 0.006 0.32 0.005
F = 6.70, F = 6.53, F = 6.05, F = 5.61, F = 6.20, F = 6.59,
p = 0.000, p = 0.000, p = 0.000, p = 0.000, p = 0.000, p = 0.000,
Adjusted Adjusted Adjusted Adjusted Adjusted Adjusted
R2 = 0.57 R2 = 0.54 R2 = 0.52 R2 = 0.51 R2 = 0.52; R2 = 0.52

*Ln, natural logarithm; PhAcase, phenylacetate hydrolase; POase, paraoxonase; _1, baseline; _2, end of study. #Adjusted for sex, LnFA_1, LnTG_1, COMT V158M and DHFR 19bpins genotypes.