Correlation between novel hematological parameters and assisted pregnancy outcome in frozen-thawed embryo transfer patients.

Notably, while the overall trend tests for NLR ( P trend = 0.138) and NPAR ( P trend = 0.149) did not reach statistical significance, subsequent subgroup analyses demonstrated clinically meaningful patterns. the likelihood of clinical pregnancy failure was 69% greater for participants in the NLR Q3 group ( OR : 1.69, 95% CI : 1.09–2.62; P = 0.020), and those in the NPAR Q4 group exhibited a 1.60-fold increase compared with Q1 (95% CI : 1.04–2.45; P = 0.031), as detailed in Table 4 .

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