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Estimates from fitting spline model to DEHP data.
| Parameter | Estimates ± SE |
|---|---|
| θ1 | –2.006 ± 0.352 |
| θ2 | –2.108 ± 0.277 |
| θ3 | 5.519 ± 0.831 |
| ɛ | 0.036 ± 0.006 |
| σ1 | 1.426 ± 0.266 |
| σ2 | 0.009 ± 0.823* |
| σ3 | 0.783 ± 0.223 |
| σ4 | 2.554 ± 0.770 |
| σ5 | 1.947 ± 0.472 |
*: not statistically significant based on partial t-testing.
