Table 4.

Multivariable binary logistic regression identifying independent predictors of FD-IBS overlap vs. FD

Predictor	OR	95% CI (lower-upper)	p value
Age (years)	0.99	0.97–0.99	0.041
Female gender	1.51	0.97–2.35	0.070
Malabsorption	1.25	0.79–1.98	0.345
Sensitivity	1.77	1.11–2.84	0.017

Data are presented as odds ratios (ORs) with 95% confidence intervals (CIs). FD served as the reference group (n = 384). Associations were calculated using multivariable logistic regression. OR > 1 indicates a positive association with FD-IBS overlap.