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. 2021 Aug 12;11:16452. doi: 10.1038/s41598-021-95865-z

Table 2.

Hazard ratios (HR) and 95% confidence intervals (CI) for the association between oral health problems and risk of all-cause mortality in older people in the BRHS after 9 years of follow-up and in the HABC Study after 15 years of follow-up.

BRHS HABC study
All-cause mortality All-cause mortality
Age adjusted
HR (95% CI)
Fully adjusted*
HR (95% CI)
Age adjusted
HR (95% CI)
Fully adjusted
HR (95% CI)
Tooth loss Tooth loss
 ≥ 21 teeth (n = 594, 36%) 1.00 1.00  ≥ 21 teeth (n = 943, 48%) 1.00 1.00
15–20 teeth (n = 340, 20%) 1.14 (0.88, 1.47) 0.97 (0.71, 1.32) 15–20 teeth (n = 357, 18%) 1.11 (0.95, 1.30) 0.98 (0.83, 1.16)
8–14 teeth (n = 265, 16%) 1.40 (1.08, 1.82) 1.06 (0.76, 1.47) 8–14 teeth (n = 282, 14%) 1.22 (1.03, 1.44) 1.08 (0.90, 1.30)
1–7 teeth (n = 123, 7%) 1.71 (1.26, 2.32) 1.59 (1.09, 2.31) 1–7 teeth (n = 184, 9%) 1.48 (1.21, 1.81) 1.33 (1.06, 1.65)
0 teeth (n = 338, 20%) 1.71 (1.36, 2.15) 1.16 (0.85, 1.57) 0 teeth (n = 208, 10%) 1.47 (1.23, 1.76) 1.33 (1.08, 1.63)
Periodontal disease||(% of sites with loss of attachment > 5.5 mm) Periodontal disease||(% of sites with pocket depth ≥ 3 mm)
 ≤ 20% (n = 943, 76%) 1.00 1.00  ≤ 20% (n = 509, 45%) 1.00 1.00
 > 20% (n = 303, 24%) 1.45 (1.16, 1.81) 1.24 (0.94, 1.63)  > 20% (n = 627, 55%) 1.17 (1.00, 1.48) 1.09 (0.92, 1.29)
Self-rated oral health Self-rated oral health
Good/excellent (n = 1320, 65%) 1.00 1.00 Good/excellent (n = 1889, 70%) 1.00 1.00
Fair/poor (n = 719, 35%) 1.15 (0.99, 1.33) 1.10 (0.89, 1.36) Fair/poor (n = 829, 30%) 1.11 (1.00, 1.23) 0.99 (0.89, 1.11)
Dry mouth symptoms Dry mouth
0 (n = 762, 37%) 1.00 1.00 No (n = 2612, 96%) 1.00 1.00
1–2 (n = 666, 33%) 1.07 (0.89, 1.28) 1.10 (0.85, 1.42) Yes (n = 107, 4%) 1.52 (1.23, 1.90) 1.46 (1.15, 1.84)
 ≥ 3 (n = 606, 30%) 1.32 (1.11, 1.56) 1.22 (0.94, 1.57)
Cumulative oral health problems Cumulative oral health problems§
0 (n = 340, 16%) 1.00 1.00 0 (n = 778, 28%) 1.00 1.00
1 (n = 1041, 49%) 1.48 (1.17, 1.88) 1.23 (0.90, 1.67) 1 (n = 1367, 49%) 1.30 (1.16, 1.45) 1.15 (1.02, 1.30)
2 (n = 540, 25%) 1.74 (1.35, 2.23) 1.29 (0.92, 1.82) 2 (n = 394, 14%) 1.25 (1.07, 1.46) 1.08 (0.92, 1.28)
 ≥ 3 (n = 226, 10%) 1.79 (1.34, 2.38) 1.32 (0.88, 1.97)  ≥ 3 (n = 223, 8%) 1.45 (1.21, 1.74) 1.27 (1.04, 1.55)

*Age, social class, smoking, alcohol, physical activity, history of CVD and diabetes, BMI, EDI score, hypertension, triglycerides, HDL, CRP, IL-6, fibrin d-dimer, hsTnT.

Age, gender, race, education, smoking, alcohol, physical activity, history of CVD and diabetes, BMI, HEI score, hypertension, total blood cholesterol, CRP, IL-6.

Includes < 21 teeth, difficulty eating, symptoms of dry mouth, and sensitivity to hot/cold/sweet.

§Includes < 21 teeth, difficulty eating, dry mouth when eating, and limit of food due to gum problems.

||Only measures of periodontal disease with positive associations included.