Statistical analysis
Results are presented either as the mean ± standard deviation (SD),
percentages or absolute numbers. The continuous variables were expressed
as mean ± SD. Whereas categorical variables (e.g., clinical outcomes and
type of infertility) were presented as percentage (%) and absolute
numbers (n). The analysis of all outcomes was on an intention-to-treat
basis. To address potential confounding variables, multivariable
logistic regression analysis was used to assess whether clinical
results, particularly clinical pregnancy rate was affected by age, BMI,
basal FSH level, AMH level and AFC count, as well as stimulation
protocol. A probability value of <0.05 was considered
statistically significant. SPSS software (version 22.0; SPSS Inc,
Chicago, IL) was used to perform all statistical analyses.