Table 2. Baseline and cycle characteristics of pregnant and non-pregnant patients.

Values are presented as mean±standard deviation or number (%). Continuous variables (mean±standard deviation) were evaluated for significance using the Mann-Whitney U test because non-parametric testing methods were required due to the sample size of the two groups. Categorical data (n, %) were compared using the chi-square test.

BMI, body mass index; IVF, in vitro fertilization; ICSI, intracytoplasmic sperm injection; AMH, anti-Müllerian hormone; FSH, follicle-stimulating hormone; E2, estradiol; MII, metaphase II; ET, embryo transfer.

^a)Fisher's exact test was used; ^b)Statistically significant; ^c)High-quality embryos were defined as grade 1 or 2 embryos with eight or more cells on day 3, the morula phase on day 4, and the blastocyst phase on day 5.