Variables | Oxygenation difference in the orbitofrontal cortex | Crude model | Adjusted modela | ||
---|---|---|---|---|---|
β (95% CI) | P value | β (95% CI) | P value | ||
Mini-Mental State Examination | Olfactory stimulation | 0.957 (0.512 to 1.403) | <0.001 | 1.001 (0.540 to 1.463) | <0.001 |
None | −0.110 (−0.680 to 0.461) | 0.704 | 0.007 (−0.569 to 0.583) | 0.981 | |
SNSB attention | Olfactory stimulation | 1.654 (−0.426 to 3.734) | 0.118 | 1.828 (−0.315 to 3.970) | 0.179 |
None | −0.618 (−3.098 to 1.861) | 0.622 | −0.440 (−2.916 to 2.037) | 0.725 | |
SNSB language and related function | Olfactory stimulation | 1.292 (0.129 to 2.454) | 0.030 | 1.218 (0.020 to 2.417) | 0.046 |
None | −0.795 (−2.192 to 0.601) | 0.261 | −0.961 (−2.367 to 0.445) | 0.178 | |
SNSB visuospatial function | Olfactory stimulation | 0.679 (−0.076 to 1.434) | 0.077 | 0.626 −0.155 to 1.408) | 0.115 |
None | −0.105 (−1.006 to 0.796) | 0.818 | −0.072 (−0.973 to 0.829) | 0.875 | |
SNSB memory | Olfactory stimulation | 1.830 (0.802 to 2.858) | 0.001 | 1.963 (0.841 to 3.084) | 0.001 |
None | −0.394 (−1.676 to 0.888) | 0.544 | −0.361 −1.717 to 0.994) | 0.598 | |
SNSB frontal/executive function | Olfactory stimulation | 1.817 (0.557 to 3.078) | 0.005 | 1.715 (0.401 to 3.029) | 0.011 |
None | −0.323 (−1.865 to 1.219) | 0.678 | −0.361 (−1.908 to 1.186) | 0.644 | |
Standard uptake value ratio | Olfactory stimulation | −9.462 (−18.062 to −0.862) | 0.031 | −10.083 (−19.063 to −1.103) | 0.028 |
None | 0.391 (−9.878 to 10.660) | 0.076 | −2.514 (−12.817 to 7.790) | 0.629 | |
Hippocampal volume | Olfactory stimulation | 0.002 (0.001 to 0.003) | 0.007 | 0.002 (0.001 to 0.004) | 0.005 |
None | −0.001 (−0.003 to 0.001) | 0.278 | −0.001 (−0.002 to 0.001) | 0.543 |