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Table 2 Study specification: cognitive assessment tool and dementia incidence rate by high/low residual teeth number groups

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

Study Publishing year Cognitive assessment tool Dementia incidence rate, per 100,000 persons
    High residual teeth number group Low residual teeth number group
Takeuchi et al. [22] 2017 DSM-III-Ra 7391 (≥ 20 teeth remaining) 16,939 (≤ 19 teeth remaining)
Komiyama et al. [23] 2016 MMSEb 6417 (≥ 20 teeth remaining) 11,087 (≤ 19 teeth remaining)
Stewart et al. [24] 2015 DSM-III-Ra 18,304 (≥ 21 teeth remaining) 30,522 (≤ 20 teeth remaining)
Luo et al. [25] 2015 DSM-IVc and MCId 2063 (< 16 missing teeth) 9783 (> 16 missing teeth)
Batty et al. [10] 2013 MMSEb 484 (≥ 22 teeth remaining) 1320 (≤ 21 teeth remaining)
Paganini-Hill et al. [26] 2012 MMSEb 21,592 (≥ 16 teeth remaining) 19,271 (≤ 15 teeth remaining)
Yamamoto et al. [27] 2012 A standardized questionnaire developed by the Ministry of Health, Labor, and Welfare in Japan 2848 (≥ 20 teeth remaining) 5854 (≤ 19 teeth remaining)
Arrivé et al. [20] 2011 DSM-III-Ra 31 (< 11 missing teeth) 41 (≥ 11 missing teeth)
Kim et al. [11] 2007 DSM-IVc 5556 (≥24 teeth remaining) 9908 (< 24 teeth remaining)
Stein et al. [21] 2007 MMSEb 36,468 (unknown) 68,421 (unknown)
Shimazaki et al. [28] 2001 Historical diagnosis information from medical records 13,235 (≥ 20 teeth remaining) 32,739 (≤ 19 teeth remaining)
  1. aDSM-III-R = Diagnostic and Statistical Manual of Mental Disorders, Revised, Third Edition
  2. bMMSE = Mini-Mental State Examination
  3. cDSM-IV = Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition
  4. dMCI = Mild Cognitive Impairment