Table 2.
Summary of all significant variable importance in the projection (VIP)a values identified in the partial least squares discriminant analysis (PLS-DA).
| O (50) vs. N (50) | ON (n = 25) vs. NN (n = 25) | OA (n = 25) vs. NA (n = 25) | |
|---|---|---|---|
| VIP > 1 | VIP > 1 | VIP > 1 | |
| CE16:0 | 1.35 | 1.06 | 2.05 |
| CE16:2 | 1.46 | 1.06 | 1.95 |
| CE17:1 | 1.34 | 1.05 | 2.07 |
| CE18:0 | 1.05 | 1.42 | 1.22 |
| CE20:2 | 1.71 | 1.2 | 2.03 |
| CE20:3 | 1.75 | 1.04 | 2.09 |
| CE20:4 | 1.18 | 1.15 | 1.45 |
| CE20:5 | 1.44 | 1.07 | 1.63 |
| CE22:6 | 1.15 | 1.37 | 1.13 |
| dhCer20:0 | 1.42 | 1.78 | 1.2 |
| LPC18:1 | 2.33 | 2.22 | 1.59 |
| LPC18:2 | 2.21 | 2.21 | 1.44 |
| LPC20:0 | 1.94 | 1.79 | 1.32 |
| LPC20:1 | 2.01 | 1.62 | 1.5 |
| LPC20:2 | 1.91 | 1.8 | 1.18 |
| LPC26:0 | 1.57 | 1.68 | 1.05 |
| oddPC31:1 | 1.17 | 1.41 | 1.13 |
| PC (18:2/20:4) | 1.23 | 1.31 | 1.04 |
| PC36:1 | 1.18 | 1.15 | 1.58 |
| PC38:3 | 1.49 | 1.21 | 1.77 |
| PC40:6 | 1.25 | 1.23 | 1.2 |
| PC40:8 | 1.42 | 1.22 | 1.28 |
| PE (16:0/0:0) | 1.67 | 1.84 | 1.19 |
| PE (18:0/0:0) | 1.57 | 1.71 | 1.25 |
| PE (20:4/0:0) | 1.76 | 1.36 | 1.58 |
| PE (O-34:2) | 1.48 | 1.13 | 1.27 |
aA significant VIP was defined as VIP > 1. N, normal-weight group; O, obese group; NN, normal weight with traditional normal clinical plasma lipid levels; NA, normal weight with traditional abnormal clinical plasma lipid levels; ON, obese with traditional normal clinical plasma lipid levels; OA, obese with traditional abnormal clinical plasma lipid levels.