Table 3.
Sig. Kruskal–Wallis H Tests with Effective Connectivity Parameters, with sig. Group Differences
| Connections | Kruskal–Wallis |
Pairwise comparison | Pairwise comparisons |
||||
|---|---|---|---|---|---|---|---|
| Sig. | χ2 | Std. Stat. | Adj. Sig | r | Mean rank | ||
| PCC to mPFC | 0.011* | 8.938 | NW–OB OW–OB NW–OW |
1.598 2.966 −1.648 |
0.330 0.009** 0.298 |
0.166 | NW: 289.84 OW: 316.00 OB: 260.39 |
| PCC to RIPC | 0.003** | 11.594 | NW–OB OW–OB NW–OW |
2.164 3.405 −1.509 |
0.091 0.002** 0.394 |
0.190 | NW: 292.99 OW: 316.92 OB: 253.09 |
| RIPC | 0.002** | 12.476 | NW–OB OW–OB NW–OW |
1.067 3.277 −2.632 |
0.857 0.003** 0.025* |
0.183 −0.122 |
NW: 281.88 OW: 323.64 OB: 262.21 |
| PCC to DLPFC | 0.030* | 7.042 | NW–OB OW–OB NW–OW |
2.566 2.155 0.435 |
0.031* 0.094 1.000 |
0.131 | NW: 306.07 OW: 299.17 OB: 258.78 |
| mPFC to RIPC | 0.032* | 6.899 | NW–OB OW–OB NW–OW |
−2.610 −1.431 −1.341 |
0.027* 0.457 0.539 |
0.134 | NW: 274.42 OW: 295.70 OB: 322.52 |
| LIPC to PCC | 0.013* | 8.637 | NW–OB OW–OB NW–OW |
1.601 −0883 2.904 |
0.328 1.000 0.004** |
0.134 | NW: 316.65 OW: 270.58 OB: 287.13 |
| LIPC to mPFC | 0.010** | 9.290 | NW–OB OW–OB NW–OW |
0.769 −1.787 3.005 |
1.000 0.222 0.008** |
0.139 | NW: 313.84 OW: 266.16 OB: 299.65 |
| LIPC | 0.040* | 6.435 | — | — | — | — | |
| LIPC to RIPC | 0.041* | 6.409 | NW–OB OW–OB NW–OW |
1.556 −0551 2.460 |
0.359 1.000 0.042* |
0.114 | NW: 313.85 OW: 274.83 OB: 285.16 |
| AI to mPFC | 0.009** | 9.368 | NW–OB OW–OB NW–OW |
−1.596 1.000 −3.037 |
0.331 0.952 0.007** |
−0.140 | NW: 268.59 OW: 316.76 OB: 298.02 |
The significant Kruskal–Wallis H test for BMI group differences in the effective connectivity parameters, and the pairwise comparison statistics. Total N = 585, NW n = 262, OW n = 202, OB n = 117. Degrees of freedom = 2. Std. Stat. = standardized test statistic. Adj.Sig=adjusted α-value after Bonferroni Correction. r = effect size. Dash indicates no data obtained, as the pairwise comparison was not run. Please see Supplementary Table S4 for the non-significant results. *p = 0.05, **p = 0.01.
NW, normal weight; OB, obese; OW, overweight.