Table 1.
Descriptive statistics and correlation matrix of main study variables
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Age | – | ||||||||||||
| 2. Female | −.11** | – | |||||||||||
| 3. T1 MDD SX | −.12** | .11** | – | ||||||||||
| 4. T1 GAD SX | −.07 | .08 | .29*** | – | |||||||||
| 5. T1 PD SX | −.09* | .15*** | .32*** | .23*** | – | ||||||||
| 6. T2 VF | −.20*** | −.011 | −.04 | −.06 | −.07 | – | |||||||
| 7. T2 NS | −.13** | −.16*** | −.12** | −.10* | −.12** | .35*** | – | ||||||
| 8. T2 BC | −.27*** | −.14*** | −.08* | −.08* | −.11* | .34*** | .44*** | – | |||||
| 9. T2 SGST | .05 | −.03 | −.08 | −.09* | −.05 | .13** | .24*** | .22*** | – | ||||
| 10. T2 BDS | −.09* | −.10 | −.11** | −.09* | −.12** | .22*** | .41*** | .36*** | .23*** | – | |||
| 11. T3 IL-6 | .40*** | −.02 | .05 | .09* | .01 | −.24*** | −.22*** | −.23*** | −.04 | −.09* | – | ||
| 12. T3 CRP | .04 | .15*** | .14*** | .09* | .01 | −.14*** | −.17*** | −.13** | −.08 | −.08* | .54*** | – | |
| 13. T3 FGN | .25*** | .12** | .08* | .031 | .05 | −.08* | −.13** | −.17*** | −.08 | −.05 | .45*** | .51*** | – |
| M or n | 51.78 | 309 | 0.78 | 0.16 | 0.47 | 21.41 | 2.80 | 41.60 | 0.98 | 5.21 | 0.71 | 0.28 | 5.81 |
| s.d. or % | 13.44 | 50.33 | 1.88 | 0.97 | 1.24 | 6.21 | 1.47 | 10.84 | 0.03 | 1.52 | 0.53 | 0.79 | 0.13 |
| Min | 25.00 | – | 0.00 | 0.00 | 0.00 | 4.00 | 0.00 | 8.00 | 0.93 | 0.00 | 0.00 | −0.71 | 5.65 |
| Max | 76.00 | – | 7.00 | 10.00 | 6.00 | 44.00 | 5.00 | 90.00 | 1.00 | 8.00 | 1.38 | 1.36 | 5.99 |
| Skewness | −0.16 | −0.01 | 2.18 | 6.84 | 2.81 | 0.20 | −0.15 | 0.28 | −0.76 | 0.12 | −0.05 | 0.10 | 0.08 |
| Kurtosis | −1.02 | −2.01 | 3.13 | 50.86 | 7.21 | 0.02 | −1.00 | 0.35 | −1.04 | −0.39 | −1.51 | −1.50 | −1.43 |
M, mean; n, number of participants; s.d., standard deviation; Min, minimum; Max, maximum; BC, backward counting; CRP, C-reactive protein; DBS, digit backward span; FGN, fibrinogen; GAD, generalized anxiety disorder; IL-6, interleukin-6; MDD, major depressive disorder; NS, number series; PD, panic disorder; SGST, stop-and-go-switch task mixed task; SX, symptom severity; T1, time 1; T2, time 2; T3, time 3; VF, verbal fluency.
Inflammation serum levels have been log transformed to achieve univariate normal distributions of the data. IL-6 was originally measured in pg/ml, fibrinogen in mg/dl, and CRP in μg/ml.
***
p ⩽ 0.001;
**
p ⩽ 0.01;
*
p ⩽ 0.05.