Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation
Objective: A new ultrasound formula for fetal weight estimation was proposed from the INTERGROWTH-21 project in 2017. There is no comparison of its accuracy with other ultrasound formulae. This study aims to compare the accuracy of INTERGROWTH-21 formula in fetal weight estimation with the tradition...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-03-01
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| Series: | Taiwanese Journal of Obstetrics & Gynecology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1028455919300191 |
| _version_ | 1819268117798322176 |
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| author | Choi Wah Kong William Wing Kee To |
| author_facet | Choi Wah Kong William Wing Kee To |
| author_sort | Choi Wah Kong |
| collection | DOAJ |
| description | Objective: A new ultrasound formula for fetal weight estimation was proposed from the INTERGROWTH-21 project in 2017. There is no comparison of its accuracy with other ultrasound formulae. This study aims to compare the accuracy of INTERGROWTH-21 formula in fetal weight estimation with the traditional Hadlock1 and Shepard formula. Materials and methods: All pregnant patients who had delivery in United Christian Hospital between January to December 2016 were retrospectively reviewed. Those who had prenatal ultrasound scan performed within 7 days of delivery were recruited. Hadlock1, Shepard and INTERGROWTH-21 formula were used to estimate the fetal weight and their accuracies were compared with the actual birthweight of neonates. Results: A total of 403 patients were recruited. Hadlock1 was the most accurate with the lowest mean absolute percentage error (MAPE) 7.34 when compared with Shepard (9.00; p < 0.001) and INTERGROWTH-21 (9.07; p < 0.001). INTERGROWTH-21 had the lowest proportion of patients having estimated fetal weight within 10% discrepancy from the actual birthweight (57.6%) compared with Hadlock1 (71.2%; p < 0.001) and Shepard (66.3; p = 0.011). Presence of intrauterine growth restriction (IUGR) or fetal macrosomia (>=4000 g) were both associated with significantly higher MAPE in Hadlock1 and INTERGROWTH-21. IUGR (p = 0.005) and macrosomia (p = 0.004) remained significant in the final equation of logistic regression model that affect the precision of fetal weight estimation in Hadlock1, while only IUGR was significant in INTERGROWTH-21 (p < 0.001). Conclusion: INTERGROWTH-21 formula was not shown to be better than the traditional Hadlock1 or Shepard formulae. Future prospective studies would be required to evaluate the accuracy of INTERGROWTH-21 formula especially at the extremes of birthweight. Keywords: Birth weight, Fetal growth retardation, Fetal macrosomia, Fetal weight, Ultrasonography |
| first_indexed | 2024-12-23T21:27:58Z |
| format | Article |
| id | doaj.art-8d7e4a21d5074464aecc9682374bb894 |
| institution | Directory Open Access Journal |
| issn | 1028-4559 |
| language | English |
| last_indexed | 2024-12-23T21:27:58Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Taiwanese Journal of Obstetrics & Gynecology |
| spelling | doaj.art-8d7e4a21d5074464aecc9682374bb8942022-12-21T17:30:33ZengElsevierTaiwanese Journal of Obstetrics & Gynecology1028-45592019-03-01582273277Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimationChoi Wah Kong0William Wing Kee To1Corresponding author. Department of O&G, United Christian Hospital, 130 Hip Wo Street, Kwun Tong, Hong Kong. Fax: +852 39495535; Department of Obstetrics and Gynaecology, United Christian Hospital, Hong KongDepartment of Obstetrics and Gynaecology, United Christian Hospital, Hong KongObjective: A new ultrasound formula for fetal weight estimation was proposed from the INTERGROWTH-21 project in 2017. There is no comparison of its accuracy with other ultrasound formulae. This study aims to compare the accuracy of INTERGROWTH-21 formula in fetal weight estimation with the traditional Hadlock1 and Shepard formula. Materials and methods: All pregnant patients who had delivery in United Christian Hospital between January to December 2016 were retrospectively reviewed. Those who had prenatal ultrasound scan performed within 7 days of delivery were recruited. Hadlock1, Shepard and INTERGROWTH-21 formula were used to estimate the fetal weight and their accuracies were compared with the actual birthweight of neonates. Results: A total of 403 patients were recruited. Hadlock1 was the most accurate with the lowest mean absolute percentage error (MAPE) 7.34 when compared with Shepard (9.00; p < 0.001) and INTERGROWTH-21 (9.07; p < 0.001). INTERGROWTH-21 had the lowest proportion of patients having estimated fetal weight within 10% discrepancy from the actual birthweight (57.6%) compared with Hadlock1 (71.2%; p < 0.001) and Shepard (66.3; p = 0.011). Presence of intrauterine growth restriction (IUGR) or fetal macrosomia (>=4000 g) were both associated with significantly higher MAPE in Hadlock1 and INTERGROWTH-21. IUGR (p = 0.005) and macrosomia (p = 0.004) remained significant in the final equation of logistic regression model that affect the precision of fetal weight estimation in Hadlock1, while only IUGR was significant in INTERGROWTH-21 (p < 0.001). Conclusion: INTERGROWTH-21 formula was not shown to be better than the traditional Hadlock1 or Shepard formulae. Future prospective studies would be required to evaluate the accuracy of INTERGROWTH-21 formula especially at the extremes of birthweight. Keywords: Birth weight, Fetal growth retardation, Fetal macrosomia, Fetal weight, Ultrasonographyhttp://www.sciencedirect.com/science/article/pii/S1028455919300191 |
| spellingShingle | Choi Wah Kong William Wing Kee To Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation Taiwanese Journal of Obstetrics & Gynecology |
| title | Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation |
| title_full | Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation |
| title_fullStr | Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation |
| title_full_unstemmed | Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation |
| title_short | Comparison of the accuracy of INTERGROWTH-21 formula with other ultrasound formulae in fetal weight estimation |
| title_sort | comparison of the accuracy of intergrowth 21 formula with other ultrasound formulae in fetal weight estimation |
| url | http://www.sciencedirect.com/science/article/pii/S1028455919300191 |
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