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. 2018 May 30;2:28. [Version 1] doi: 10.12688/gatesopenres.12822.1

Table 2. Performance of models to provide continuous estimates of gestational age.

2 months storage (n=60) 4 months storage (n=61) 6 months storage (n=65) 12 months storage (n=38)
Fresh Stored Fresh Stored Fresh Stored Fresh Stored
Model 1 1.42 wks - 1.35 wks - 1.11 wks - 1.60 wks -
Model 2 1.21 wks 1.20 wks -0.00 1.04 wks 1.08 wks +0.04 0.93 wks 1.16 wks +0.24 1.39 wks 1.48 wks +0.10
-0.22 -0.22 -0.31 -0.27 -0.19 +0.05 -0.22 -0.12

Data are expressed as RMSE, root mean squared error (average absolute deviation of ultrasound-validated vs. model estimated gestational in weeks); , Black=unchanged, Green=improvement in model accuracy, Red=attenuation in model accuracy