Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

398 questions · 434 findings · 166 reviews

No studies found 95 · 21.9%GRADE not reported 31 · 7.1%Very low 91 · 21%Low 110 · 25.3%Moderate 78 · 18%High 29 · 6.7%

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
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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

Percutaneous endoscopic gastrostomy vs nasogastric tube feeding

Mortality irrespective of · adult patients with swallowing disturbances

It is very uncertain whether percutaneous endoscopic gastrostomy changes mortality irrespective of compared with nasogastric tube feeding (very low certainty).

1 finding from 1 review

Inositol supplementation IV initially followed by enteral administration (repeat doses of 80 mg/kg/day) in preterm infants born at less than 30 weeks' PMA vs placebo

All‐cause mortality (outcome collected through first event: death, hospital discharge, hospital transfer, or 120 days after birth) · preterm infants with or at risk of respiratory distress syndrome

Inositol supplementation IV initially followed by enteral… showed no clear difference in all‐cause mortality (outcome collected through first event: death,… compared with placebo (moderate certainty).

1 finding from 1 review

Mortality: prone position vs supine

Subgroup analysis of longer‐term mortality: lower tidal volume ventilationAlive or dead · adults with acute respiratory failure

Mortality: prone position probably leads to lower subgroup analysis of longer‐term mortality: lower tidal volume… compared with supine (moderate certainty).

1 finding from 1 review

Admission cardiotocography vs intermittent auscultation

Perinatal mortality rate (fetal and neonatal deaths excluding lethal congenital anomalies) · Low risk pregnant women. All of the women were in labour.

Admission cardiotocography showed no clear difference in perinatal mortality rate (fetal and neonatal deaths excluding lethal… compared with intermittent auscultation (low‐risk women) (moderate certainty).

1 finding from 1 review

Intervention not reported

Perinatal/neonatal death or severe neonatal morbidity ‐ Low national perinatal mortality rate · women with term breech delivery

The intervention probably leads to lower perinatal/neonatal death or severe neonatal morbidity ‐ Low national… (moderate certainty).

1 finding from 1 review

Interdisciplinary enhanced rehabilitation (inpatient rehabilitation) vs conventional rehabilitation

Mortality during hospitalisation ( · adults with dementia following hip fracture surgery

It is very uncertain whether interdisciplinary enhanced rehabilitation (inpatient rehabilitation) changes mortality (during hospitalisation) compared with conventional rehabilitation (very low certainty).

1 finding from 1 review