Statistical analysis
Group means were compared using one-way analysis of variance (with the
least significant difference post-hoc test) for quantitative variables,
and a chi-squared test for qualitative variables. Quantitative variables
were expressed as the mean ± standard deviation, and qualitative
variables were presented as frequencies and percentages.
Multivariate logistic regression
analysis (backward: conditional) was performed to compare adjusted odds
ratios (OR) and 95% confidence intervals (CI) for the effect of various
PCOS phenotypes on pregnancy outcomes in FET, adjusted by the variates
of P < 0.05 in univariate logistic regression analysis.
All analyses were performed with the use of SPSS software (version
23.0).
Two-sidedP values of less than 0.05 were considered to indicate
statistically significant differences.