Table 5. Correlation of PFC analytes and ΣPFCs based on nonparametric tests.
| PFHxS | PFOS | PFHpA | PFOA | PFNA | PFDA | PFUnDA | PFDoDA | PFTA | ΣPFCs | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| PFHxS | Kendall’s tau. | 1 | |||||||||
| p value | — | ||||||||||
| PFOS | Kendall’s tau. | 0.176 | 1 | ||||||||
| p value | 0.323 | — | |||||||||
| PFHpA | Kendall’s tau. | 0.162 | 0.515 | 1 | |||||||
| p value | 0.365 | 0.004** | — | ||||||||
| PFOA | Kendall’s tau. | 0.000 | 0.500 | 0.632 | 1 | ||||||
| p value | 1.000 | 0.005** | 0.000** | — | |||||||
| PFNA | Kendall’s tau. | 0.111 | 0.435 | 0.627 | 0.524 | 1 | |||||
| p value | 0.536 | 0.015* | 0.000** | 0.003** | — | ||||||
| PFDA | Kendall’s tau. | −0.112 | 0.141 | 0.439 | 0.439 | 0.552 | 1 | ||||
| p value | 0.536 | 0.433 | 0.015* | 0.015* | 0.002** | — | |||||
| PFUnDA | Kendall’s tau. | 0.033 | 0.198 | 0.594 | 0.363 | 0.555 | 0.684 | 1 | |||
| p value | 0.861 | 0.294 | 0.002** | 0.055 | 0.003** | 0.000** | — | ||||
| PFDoDA | Kendall’s tau. | −0.066 | 0.132 | 0.462 | 0.231 | 0.389 | 0.551 | 0.815 | 1 | ||
| p value | 0.727 | 0.485 | 0.014* | 0.221 | 0.040* | 0.004** | 0.000** | — | |||
| PFTA | Kendall’s tau. | −0.025 | 0.041 | 0.274 | 0.174 | 0.150 | 0.411 | 0.447 | 0.595 | 1 | |
| p value | 0.896 | 0.827 | 0.149 | 0.358 | 0.431 | 0.032* | 0.026* | 0.003** | — | ||
| ΣPFCs | Kendall’s tau. | 0.221 | 0.838 | 0.676 | 0.632 | 0.598 | 0.275 | 0.314 | 0.215 | 0.075 | 1 |
| p value | 0.217 | 0.000** | 0.000** | 0.000** | 0.001** | 0.127 | 0.097 | 0.256 | 0.694 | — |
*p < 0.05, **p < 0.01.