Statistical analysis
Statistical analysis was performed after normality testing (histogram analysis and/or Kolmogorov-Smirnov test) using IBM SPSS, version 21 (IBM Inc., Armonk, NY). Two sided paired Student’s t-tests or Wilcoxon signed rank tests were used to compare the IAP values before and after pelvic reconstructive surgery. Student’s t-test was used for the comparison of normally distributed variables, while the Mann-Whitney U-test was used for non-parametric variables, and Fisher’s exact tests were used to compare categorical variables. Pearson’s correlations were used to assess correlations between IAP and patient characteristics such as age, weight, waist circumference and parity. Spearman’s correlation was applied in cases where the normality of the data was questionable. AP value of <0.05 was considered significant for all tests.