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.