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. 2020 Sep 24;15(9):e0239120. doi: 10.1371/journal.pone.0239120

Fig 2. Associations between endometrial thickness and clinical pregnancy rate of HRT-FET cycles.

Fig 2

The threshold was identified, and a nonlinear association between endometrial thickness and the clinical pregnancy rate was found (P<0.001) using a GAM. The solid-dotted red line represents the smooth curve that fits between variables. Blue curves represent the upper and lower limits of the 95% CI. All were adjusted for age, the duration of infertility, body mass index, infertility type, and the number and type of embryos transferred.