Primary study · included by 1 review

Zervou 2004

ProbableThe reviews cited this study without a PMID, DOI or NCT, so it is matched by first author and year. Two different studies by the same author in the same year could be merged here.

Included by

Oral Manifestations in Patients with Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis.

Non-Cochrane · prognostic · 2026 · cited as Zervou 2004 · Table 1; forest plot Figure 2/3

Outcome this study informs	Pooled effect	Evidence	Certainty
Tongue alterations (coated, geographic, fissured tongue) Inflammatory bowel disease (single-arm prevalence) vs None (single-arm) · Not specified	Prevalence (proportion) 0.11 [0.04, 0.24]	5 studies · 248 participants	GRADE not reported
Oral ulcerations Inflammatory bowel disease (single-arm prevalence) vs None (single-arm) · Not specified	Prevalence (proportion) 0.20 [0.11, 0.33]	13 studies · 2599 participants	GRADE not reported

1 including review in total.