Table 3.

Regression analysis between IBS-SSS total score and biochemical, psychological, and QoL parameters.

	β	Std. Error (β)	p	95% CI
DAO	10.58	4.42	0.029	2.88–18.27
Somatization (SCL-90)	4.65	1.41	0.005	2.11–7.20
Total score (IBS-QoL)	−3.13	1.12	0.013	−4.95–−1.31

All the variables were calculated as differences before and after the low FODMAPs diet. In the linear regression, the IBS-SSS was considered the dependent variable, the other factors being the independent variables. DAO = diamine oxidase.