TABLE 2.

Subgroup analysis of the prevalence of FI in CD patients.

Subgroups	Number of included studies	Heterogeneity study		Prevalence
		I2	P
Sample source
Online	4	87.7%	<0.001	52.3% (45.3%, 59.3%)
Offline	11	98.7%	<0.001	28.9% (17.7%, 41.7%)
Study type
Cross-sectional study	11	99.1%	<0.001	41.7% (28.0%, 56.2%)
Cohort study	4	96.3%	<0.001	17.7% (6.7%, 32.5%)
Diagnostic criteria
Patient report	5	99.1%	<0.001	24.5% (4.7%, 52.9%)
Professional instrument	10	99.0%	<0.001	40.2% (27.2%, 53.9%)