Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,752 questions · 6,648 findings · 688 reviews

No studies found 1,125 · 16.9%GRADE not reported 670 · 10.1%Very low 1,796 · 27%Low 1,685 · 25.3%Moderate 1,075 · 16.2%High 297 · 4.5%

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Metal-free tooth-supported FDPs (pressed veneering ceramic) vs Metal-free tooth-supported FDPs (layered veneering ceramic)

Bridge failure · Adults (18 years or older) needing a three-unit tooth-supported fixed dental prosthesis
1 finding from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Plaque · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) showed no clear difference in plaque index (PI) compared with metal-ceramic cantilevered FDPs; GRADE not reported.

1 finding from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Cantilevered bridge failure · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis
1 finding from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Gingival index (GI) · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) showed no clear difference in gingival index (GI) compared with metal-ceramic cantilevered FDPs; GRADE not reported.

1 finding from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Cantilevered bridge complications · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis

It is very uncertain whether metal-free cantilevered FDPs (feldspathic-veneered zirconia) changes cantilevered bridge complications compared with metal-ceramic cantilevered FDPs (very low certainty).

1 finding from 1 review

Metoprolol vs placebo

All cardiovascular death · patients of any age with AAA less than 30 mm in diameter

Metoprolol showed no clear difference in cardiovascular death, 30 days3 compared with placebo (low certainty).

2 findings from 1 review

Metoprolol vs placebo

AAA‐related death, 30 days4 · patients of any age with AAA less than 30 mm in diameter

Metoprolol showed no clear difference in AAA‐related death, 30 days4 compared with placebo (low certainty).

2 findings from 1 review

Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

M + GLP1‐A
2 findings from 1 review

Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

M + DPP4‐I

It is very uncertain whether metformin‐sulphonylurea (second‐ or third‐generation) combination… changes M + DPP4‐I compared with metformin plus another antidiabetic drug (very low certainty).

3 findings from 1 review

Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

M + thiazolidinedione

It is very uncertain whether metformin‐sulphonylurea (second‐ or third‐generation) combination… changes M + thiazolidinedione compared with metformin plus another antidiabetic drug (very low certainty).

2 findings from 1 review

Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

M + nateglinide
4 findings from 1 review
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Metformin‐sulphonylurea (second‐ or third‐generation) combination therapy vs metformin plus another antidiabetic drug

M + SGLT2‐I

It is very uncertain whether metformin‐sulphonylurea (second‐ or third‐generation) combination… changes M + SGLT2‐I compared with metformin plus another antidiabetic drug (very low certainty).

2 findings from 1 review

Summary of findings table ‐ Metformin + levonorgestrel (intrauterine system) vs levonorgestrel intrauterine system

Hysterectomy rate · endometrial hyperplasia

It is very uncertain whether summary of findings table ‐ Metformin + levonorgestrel (intrauterine… changes hysterectomy rate compared with levonorgestrel intrauterine system (very low certainty).

1 finding from 1 review