Application of the LMS method of constructing fetal reference charts: comparison with the original method
| Autor: | Miao-Xu Lun, Liang Zhang, Yi-Wei Xiao, Han-Lin Huang, Cheng Gui, Li-Juan Lv, Ning Shang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
China
Percentile Gestational Age Reference range 030204 cardiovascular system & hematology Ultrasonography Prenatal Standard deviation 03 medical and health sciences Fetus 0302 clinical medicine Chart Pregnancy Reference Values Statistics Humans Medicine Fetal head Retrospective Studies 030219 obstetrics & reproductive medicine Biparietal diameter business.industry Obstetrics and Gynecology Regression Head circumference Cross-Sectional Studies Pediatrics Perinatology and Child Health Female business |
| Zdroj: | The Journal of Maternal-Fetal & Neonatal Medicine. 34:395-402 |
| ISSN: | 1476-4954 1476-7058 |
| DOI: | 10.1080/14767058.2019.1608942 |
| Popis: | Objectives: In view of the concern expressed about the current references, new references for fetal biparietal diameter and head circumference should be constructed for contemporary local populations.Methods: We conducted a retrospective cross-sectional study in two hospitals in Guangdong, Southern China. Fetal biparietal diameter and head circumference percentiles regression were fitted using Cole's LMS method. The BPD and HC data were then transformed into Z-scores that were calculated using two series of reference equations obtained from two methods: Cole's LMS method and the original "mean and SD method." Each Z-score distribution was presented as the mean and standard deviation. Finally, the sensitivity and specificity of each reference for identifying fetuses 97.5th percentile (based on the observed distribution of Z-scores) were calculated. The misclassified number and Youden's index were listed.Results: A total of 17,974 biparietal diameter and 18,269 head circumference measurements were chosen to establish a reference chart. The LMS method could fit the local population better than the "mean and SD method" as it had a lower number of misclassified fetuses and a higher Youden's index.Conclusion: The Cole's LMS method was able to construct a satisfied reference range of fetal head sizes in Southern China. |
| Databáze: | OpenAIRE |
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