Statistical analysis
The sample size calculation suggested that 265 cycles at least would be enough to
demonstrate a 20% effect with 90% power and 5% significance level considering as
primary outcome clinical pregnancy rate. An increase of 33% in sample size was
required due to a 3:1 randomization. Sample size calculation was performed using
G*Power 3.1.7.Generalized Linear Models, adjusted for potential confounders (female age, FSH
dose used for controlled ovarian stimulation, endometrial thickness upon embryo
transfer, number of transferred embryos and high quality embryos rate), followed
by Bonferroni post hoc test for the comparison of means between groups were used
to investigate the impact of juice supplementation on the clinical outcomes of
ICSI.Data are expressed as mean ± standard error for continuous variables or
percentages for dichotomous variables, and 