Primary study · included by 1 review

Oral health and risk of colorectal cancer: results from three cohort studies and a meta-analysis.

Ren HG 2016 · Ren H G, Luu H N, Cai H, et al. · Annals of oncology : official journal of the European Society for Medical Oncology · 2016

Included by

Associations of oral health with colorectal cancer risk: accumulated evidences from observational studies.

Non-Cochrane · aetiology · 2026 · cited as Ren 2016 · Table 1; References 11, 18-31

Outcome this study informs	Pooled effect	Evidence	Certainty
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.08 [0.97, 1.21]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.17 [1.02, 1.33]	3 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.08 [0.97, 1.20]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.09 [1.00, 1.18]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.13 [1.10, 1.16]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.01 [0.87, 1.18]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.08 [0.98, 1.19]	6 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 0.88 [0.71, 1.08]	3 studies	GRADE not reported
Colorectal cancer risk Dental caries (tooth decay) vs No dental caries	HR 1.00 [0.96, 1.04]	2 studies	GRADE not reported
Colorectal cancer risk Dental caries vs No dental caries · Long-term follow-up (varied across studies)	HR 1.00 [0.96, 1.04]	2 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.08 [0.96, 1.20]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.09 [0.99, 1.21]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 0.98 [0.83, 1.15]	6 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.01 [0.85, 1.21]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.07 [0.96, 1.20]	8 studies	GRADE not reported
Colorectal cancer risk Tooth loss vs No or less tooth loss	HR 1.09 [0.98, 1.21]	6 studies	GRADE not reported

1 including review in total.