Table 3 Regression parameters for least‐squares regression of log10 MoM against weight.
| AFP | HCG | uE3 | |
|---|---|---|---|
| A | 0.3007 (0.3890) | 0.1889 (0.2026) | 0.1339 (0.01442) |
| B | −0.0045 (−0.0053) | −0.0029 (−0.00288) | −0.0020 (−0.0010) |
| 95% CI for B | −0.0052 to −0.0037 | −0.0039 to −0.0018 | −0.0027 to −0.0012 |
| r2 | 0.1459 | 0.0328 | 0.0391 |
| r | −0.3819 (−0.3315) | −0.1812 (−0.1563) | −0.1976 (−0.0758) |
| n | 752 | 752 | 752 |
| p | <0.0001 | <0.0001 | <0.0001 |
| 95% CI for r | −0.4414 to −0.3191 | −0.2495 to −0.1112 | −0.2654 to −0.1279 |
AFP, αfetoprotein; HCG, human chorionic gonadotropin; uE3, unconjugated oestriol.
Values in parentheses are statistics published from Reynolds et al (1991).6