Ethnic variation and variability of fetal nasal bone length at 11-15 weeks of gestation in a Brazilian population: preliminary results

Ethnic variation and variability of fetal nasal bone length at 11-15 weeks of gestation in a Brazilian population: preliminary results

Author Cossi, Paulo Sergio Autor UNIFESP Google Scholar
Bussamra, L. C. S. Autor UNIFESP Google Scholar
Araujo, Edward Autor UNIFESP Google Scholar
Machado Nardozza, Luciano Marcondes Autor UNIFESP Google Scholar
Moron, Antonio Fernandes Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract Objective To evaluate the maternal ethnic influence and the intra and interobserver reproducibility of the nasal bone length measurement at 11-15 weeks of gestation in a Brazilian population.Methods A cross-sectional study with 171 normal pregnant women at 11-15 weeks was performed. Nasal bone was transabdominally measured in all cases. the patients were separated into three racial groups (White, Black and Asian) according to maternal ethnicity. the intraobserver variability was calculated through the repeated measurement of 55 fetuses by a single observer, and the interobserver variability was calculated through 44 measurements by two observers. the ANOVA test was used to compare the three racial groups. To calculate the variability, the intraobserver correlation coefficient (intra-CC), the interclass correlation coefficient (inter-CC) with 95% confidence interval, and the Bland-Altman plots were used.Results No statistically significant difference could be observed among the three races as for nasal bone length measurement (P = 0.934). the intraobserver variability was considered very good [intra-CC 0.92-IC 95% (0.902; 0.947)], as well as the interobserver variability [inter-CC 0.91-IC 95% (0.873; 0.940)].Conclusions There is no significant difference in nasal bone length measurement among the three races analyzed. Nasal bone length measurement is reproducible.
Keywords ultrasound
fetal nasal bone
first trimester
ethnicity
reproducibility
Language English
Date 2008-11-01
Published in Archives of Gynecology and Obstetrics. Heidelberg: Springer Heidelberg, v. 278, n. 5, p. 431-435, 2008.
ISSN 0932-0067 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 431-435
Origin http://dx.doi.org/10.1007/s00404-008-0606-7
Access rights Closed access
Type Article
Web of Science ID WOS:000259040400006
URI http://repositorio.unifesp.br/handle/11600/30990

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account