Mean error

(mm)

Error range

(95% CI) (mm)

Mean error

(%)

Error range

(95% CI) (%)

MAD

14 - 30 week

0.2

−6.5 to 6.8

0.4

−14.0 to 14.7

30 - 41 week

−2.2

−32.7 to 28.2

−2.1

−30.7 to 26.5

AC

14 - 30 week

0.6

−20.3 to 21.4

0.4

−14.0 to 14.7

30 - 41 week

−7.0

−102.6 to 88.6

−2.1

−30.7 to 26.5