Verburg’s original reported equation | Equation from the simulated data | ||
---|---|---|---|
CRL (mm) | Median GA (Weeks) predicted from CRL | Median GA (Weeks) predicted from CRL | Difference in GA (days) |
5 | 6.336 | 6.324 | 0.082 |
10 | 7.503 | 7.497 | 0.041 |
15 | 8.312 | 8.310 | 0.015 |
20 | 8.962 | 8.962 | -0.003 |
25 | 9.519 | 9.521 | -0.017 |
30 | 10.015 | 10.019 | -0.026 |
35 | 10.469 | 10.474 | -0.032 |
40 | 10.892 | 10.897 | -0.035 |
45 | 11.290 | 11.296 | -0.036 |
50 | 11.670 | 11.675 | -0.036 |
55 | 12.034 | 12.039 | -0.033 |
60 | 12.386 | 12.390 | -0.029 |
65 | 12.727 | 12.731 | -0.023 |
70 | 13.060 | 13.063 | -0.016 |
75 | 13.386 | 13.387 | -0.008 |
80 | 13.706 | 13.706 | 0.001 |
85 | 14.021 | 14.019 | 0.012 |
90 | 14.331 | 14.328 | 0.023 |
95 | 14.638 | 14.633 | 0.036 |
100 | 14.942 | 14.935 | 0.050 |