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%

Geriatrician‐led inpatient management vs orthopaedic‐led inpatient management

Mortality at 12 months · adults with dementia following hip fracture surgery

It is very uncertain whether geriatrician‐led inpatient management changes mortality at 12 months compared with orthopaedic‐led inpatient management (very low certainty).

1 finding from 1 review

Hypertonic saline vs other intracranial pressure‐lowering agents

Mortality (short‐term) · people with acute traumatic brain injury

It is very uncertain whether hypertonic saline changes mortality (short‐term) compared with other intracranial pressure‐lowering agents (very low certainty).

1 finding from 1 review

Highest vs lowest selenium exposure

Cancer mortality risk No. of participants: 17,448 (1 RCT) · Participants in trials with low risk of bias

Highest showed no clear difference in cancer mortality risk No. of participants: 17,448 (1 RCT) compared with lowest selenium exposure (high certainty).

1 finding from 1 review

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
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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

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

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