Conclusion
In conclusion, higher levels of serum ApoB and ApoB/ApoA-1 ratio during
mid-pregnancy were associated with an increased risk of PTB among
Chinese pregnant women. Monitoring and managing apolipoprotein levels
during pregnancy may help to identify the high-risk population and
reduce the risk of preterm birth. Further studies are needed to confirm
the positive relationships between ApoB, ApoB/ApoA-1 during pregnancy
and PTB and to explore the underlying mechanisms.