Figure 3.

Bayesian kernel machine regression (BKMR) analysis of mixture air pollution exposure’s impact on clinical pregnancy likelihood across various exposure periods. The cumulative effects of air pollution mixtures on clinical pregnancy likelihood across four exposure periods evaluated by the BKMR models: Period 1 (A), Period 2 (B), Period 3 (C), Period 4 (D). The model was adjusted for variables including age, BMI, stimulation protocol, endometrial thickness on hCG day, total dose of Gn, duration of infertility, cause of infertility, infertility type, number of retrieved oocytes, number of embryo transfer, stage of embryo transfer, temperature, and dew point. Period 1, 90 days before oocyte retrieval; Period 2, oocyte retrieval to embryo transfer; Period 3, embryo transfer to serum hCG test; Period 4, 90 days before oocyte retrieval to serum hCG test; Gn, gonadotropin.