Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

17 questions · 33 findings · 2 reviews

No studies found 0 · 0%GRADE not reported 16 · 48.5%Very low 0 · 0%Low 5 · 15.2%Moderate 5 · 15.2%High 7 · 21.2%

Edentulous (0 remaining teeth) vs 1-32 remaining teeth

All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, the multivariable-adjusted HR for all-cause mortality in edentulous adults (0 teeth) vs adults with 1-32 teeth was 1.30 (95% CI 1.21 to 1.40; 7 studies, I2=20%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

4 findings from 1 review
Show 1 more finding

0-19 remaining teeth vs 20-32 remaining teeth

All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, the crude HR for all-cause mortality in adults with 0-19 teeth vs adults with 20-32 teeth was 2.47 (95% CI 2.40 to 2.54; 2 studies, I2=0%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

4 findings from 1 review
Show 1 more finding

Higher number of lost teeth (per one additional lost tooth) vs Fewer lost teeth (continuous, per-tooth increment)

All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

Each additional lost tooth was associated with a multivariable-adjusted HR of 1.02 (95% CI 1.01 to 1.03) for all-cause mortality (11 studies, I2=89%), statistically significant; GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

3 findings from 1 review

1-19 remaining teeth vs 20-32 remaining teeth

All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, adults with 1-19 teeth had a higher cumulative incidence of all-cause mortality than adults with 20-32 teeth (RR 1.76, 95% CI 1.41 to 2.19; 8 cohort studies, I2=94%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

Edentulous (0 remaining teeth) vs 20-32 remaining teeth

All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, edentulous adults (0 teeth) had a higher cumulative incidence of all-cause mortality than adults with 20-32 teeth (RR 2.27, 95% CI 1.82 to 2.83; 8 cohort studies, I2=94%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

11-16 remaining teeth vs 25-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, adults with 11-16 teeth had a higher cumulative incidence of ACVD-related events than adults with 25-32 teeth (RR 2.27, 95% CI 1.55 to 3.32; 4 cohort studies, I2=87%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

17-24 remaining teeth vs 25-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, adults with 17-24 teeth had a higher cumulative incidence of ACVD-related events than adults with 25-32 teeth (RR 1.73, 95% CI 1.22 to 2.45; 4 cohort studies, I2=87%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

Edentulous (0 remaining teeth) vs 1-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, the multivariable-adjusted HR for ACVD-related events in edentulous adults (0 teeth) vs adults with 1-32 teeth was 1.21 (95% CI 1.07 to 1.36; 5 studies, I2=35%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

4 findings from 1 review
Show 1 more finding

0-19 remaining teeth vs 20-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, the crude HR for ACVD-related events in adults with 0-19 teeth vs adults with 20-32 teeth was 2.27 (95% CI 1.50 to 3.43; 1 study, I2 not applicable (single study)); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

4 findings from 1 review
Show 1 more finding

Edentulous (0 remaining teeth) vs 20-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, edentulous adults (0 teeth) had a higher cumulative incidence of ACVD-related events than adults with 20-32 teeth (RR 2.65, 95% CI 1.77 to 3.98; 2 cohort studies, I2=60%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

Higher number of lost teeth (per one additional lost tooth) vs Fewer lost teeth (continuous, per-tooth increment)

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

Each additional lost tooth was associated with a multivariable-adjusted HR of 1.02 (95% CI 1.01 to 1.03) for ACVD-related events (13 studies, I2=75%), statistically significant; GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

3 findings from 1 review

1-19 remaining teeth vs 20-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, adults with 1-19 teeth had a higher cumulative incidence of ACVD-related events than adults with 20-32 teeth (RR 1.69, 95% CI 1.13 to 2.53; 2 cohort studies, I2=60%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

0-10 remaining teeth vs 25-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, adults with 0-10 teeth had a higher cumulative incidence of ACVD-related events than adults with 25-32 teeth (RR 2.65, 95% CI 1.84 to 3.81; 4 cohort studies, I2=87%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

All cause mortality · people with chronic kidney disease (predialysis (GFR 15 to 60 mL/min/1.73 m²), HD, PD, transplant recipients)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for All cause mortality, Patients with chronic kidney disease: RR 0.86 (95% CI 0.81 to 0.92), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

All cause mortality · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for All cause mortality: HR 0.72 (95% CI 0.66 to 0.78), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Cardiovascular mortality · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cardiovascular disease mortality: RR 0.55 (95% CI 0.36 to 0.85), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

All cause mortality (in CKD patients) · Participants in observational studies

The meta-analysis of observational studies reported a RR of 0.88 (95% CI 0.81 to 0.93) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review