Statistical analysis
BOS, ®, ±, IBS, pain
The main outcomes were the differences in domains, component summaries, and total scores of the SF-36 and IBS-QOL. Secondary outcomes included age, body mass index (BMI), marital status, pain related to menses, frequency of defecation per week, IBS subtype, and the Bristol Scale (subjective and objective). Statistical analysis was performed with IBM® SPSS® Statistics, version 26 (Registered for Iberoamerican University). When appropriate, data indicate the mean ± standard deviation, 95 % confidence intervals (CI), range, and/or percentages. Statistical differences were evaluated by Student’s t test for parametric data, Mann‒Whitney and chi-square tests for nonparametric data, and Fisher’s exact test with the Katz approximation for relative risk (RR). Alpha = 0.05 in these analyses. We analyzed the correlation between BSS and BOS through the Pearson test.