Ethnic-Specific Standards for Fetal Growth
Author Information
Author(s): Kierans William J, Joseph KS, Luo Zhong-Cheng, Platt Robert, Wilkins Russell, Kramer Michael S
Primary Institution: The British Columbia Vital Statistics Agency
Hypothesis
Are ethnic differences in fetal growth physiologic or pathologic?
Conclusion
Using ethnic-specific standards for fetal growth provides a clearer understanding of perinatal mortality and small-for-gestational-age rates.
Supporting Evidence
- Chinese and South Asian infants had lower perinatal mortality risks despite lower mean birth weights.
- First Nations births had higher mean birth weights but higher perinatal mortality risks.
- Using ethnic-specific standards aligned SGA rates with perinatal mortality rates.
Takeaway
Different ethnic groups have different average sizes for babies, and using the same standard for all can be misleading. It's better to have special rules for each group.
Methodology
The study analyzed birth and death records from British Columbia from 1981 to 2000, comparing fetal growth and perinatal mortality across four ethnic groups.
Potential Biases
Potential 'healthy migrant' bias may affect the generalizability of the findings.
Limitations
The study may be affected by biases related to immigration and socioeconomic status of the ethnic groups.
Participant Demographics
Participants included births from Chinese, South Asian, First Nations, and Other ethnic groups in British Columbia.
Digital Object Identifier (DOI)
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