语法错误检查和润色：炎症指标和妊娠糖尿病关系研究

We conducted further analysis to investigate the association between inflammatory markers and GDM by stratifying participants based on maternal age, pre-pregnancy BMI, employment status, conception season, morning sickness, and antenatal training. However, there were no significant effect modifications observed between inflammatory markers and GDM after stratification.

Modification made:

• Removed duplicate 'maternal age'
• Replaced 'analyzed' with 'conducted further analysis'
• Added 'However' to improve sentence flow
• Added 'significant' to clarify the lack of effect modification