Table 3. Statistical parameters of age-related GLM.
| fALFF | T-statistic | P | R2/R | Fitting curve |
|---|---|---|---|---|
| MDD | ||||
| Left MCC | 5.06 | 0.0254 | 0.0212 | y=−0.10331 gender + 1.1452 |
| HC | ||||
| Right precuneus | 6.00 | 0.0029 | 0.0492 | y= 0.00045 age2 − 0.0389 age + 2.2795 |
| Left PCC | 4.94 | 0.0079 | 0.0409 | y=0.00042 age2 − 0.0339 age + 1.9475 |
| Left MCC | 7.31 | 0.0008 | 0.0592 | y=0.00041 age2 − 0.0326 age + 1.5395 |
| Right MCC | 7.63 | 0.0006 | 0.0617 | y=0.00042 age2 − 0.0361 age + 1.7386 |
| Left AG | 4.41 | 0.0131 | 0.0367 | y=0.00029 age2 − 0.0227 age + 1.2888 |
| Right SMG | 5.63 | 0.0010 | 0.0682 | y=0.00030 age2 − 0.0246 age + 0.1287 gender + 1.2514 |
Note: R2 in R2/R represents the curve fitting degree of the age-related quadratic fitting curve, expressed in italic values; R represents the correlation between fALFF and gender. GLM, general linear model; MDD, major depressive disorder; HC, healthy controls; MCC, middle cingulate cortex; PCC, posterior cingulate cortex; AG, angular gyrus; SMG, supramarginal gyrus.