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Table 1 Intra- and inter-observer agreements on the facial profile marker measurements

From: Ultrasound measurements of fetal facial profile markers and their associations with congenital malformations during early pregnancy

 

Observer 1

 

Observer 2

 

Observer 1 and 2

 

Mean

95% LoA

 

Mean

95% LoA

 

Mean

95% LoA

FMF

0.169

(-2.731 ~ 3.069)

 

0.059

(-1.094 ~ 1.212)

 

0.034

(-1.835 ~ 1.903)

MNM

-0.156

(-1.743 ~ 1.432)

 

-0.003

(-0.983 ~ 0.976)

 

-0.201

(-1.425 ~ 1.022)

FMA

-0.179

(-2.742 ~ 2.383)

 

-0.038

(-0.763 ~ 0.686)

 

-0.194

(-2.857 ~ 2.469)

IFA

-0.083

(-2.655 ~ 2.490)

 

-0.011

(-0.762 ~ 0.740)

 

-0.189

(-4.273 ~ 3.896)

FSD

-0.008

(-0.236 ~ 0.219)

 

0.023

(-0.227 ~ 0.274)

 

-0.079

(-0.623 ~ 0.464)

PL

-0.043

(-0.283 ~ 0.196)

 

-0.063

(-0.658 ~ 0.531)

 

0.010

(-0.409 ~ 0.429)

PMD

-0.023

(-0.240 ~ 0.193)

 

0.0467

(-0.209 ~ 0.303)

 

-0.094

(-0.591 ~ 0.403)

  1. FMA, facial maxillary angle; FMF, frontomaxillary facial angle; FSD, frontal space distance; IFA, inferior facial angle; LoA, limits of agreement; MNM, maxilla-nasion-mandible angle; PL, profile line distance; PMD, palatine maxillary diameter