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| Variable | R2 | F value | p value | Intercept | Slope |
|---|---|---|---|---|---|
| Cellular hPL | 0.067 | 6.35 | 0.014 | 4.4870 | 0.0104 |
| Cellular βhCG | 0.534 | 101.00 | 0.000 | 2.5528 | 0.0343 |
| Plasma hPL | 0.814 | 384.90 | 0.000 | −0.7054 | 0.0482 |
| Plasma βhCG | 0.201 | 22.07 | 0.000 | 3.5174 | −0.0438 |
| hPL | 0.271 | 32.74 | 0.000 | 2.6811 | −0.0354 |
| βHCG | 0.432 | 66.92 | 0.000 | 1.9177 | −0.0307 |
