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Table 3 GRADEa quality of evidence

From: Association between residual teeth number in later life and incidence of dementia: A systematic review and meta-analysis

Outcomes Incidence rate per 100,000 persons Pooled ORb(95% CIc, p) № of participants (studies) Quality of evidence Comments
Low residual tooth number group High residual tooth number group
Incidence of dementia 8415 per 100,000 (1209/14,366) 7729 per 100,000 (1123/14,528) 0.483 (0.315 to 0.740, p < 0.001) 28,894 (11 cohort studies) VERY LOW Random effects, I2 = 92.421%
  1. aGRADE = Grading of Recommendations Assessment, Development, and Evaluation; bOR = odds ratios; cCI = confidence intervals