Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

369 questions · 463 findings · 41 reviews · All outcomes

No studies found 44 · 9.5%GRADE not reported 336 · 72.6%Very low 31 · 6.7%Low 26 · 5.6%Moderate 15 · 3.2%High 11 · 2.4%

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Signs and symptoms of atypical swallowing and speech production disturbances · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

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

Tuberculosis · Participants in observational studies

The meta-analysis of observational studies reported a SMD (to OR) of 0.29 (95% CI 0.19 to 0.46) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

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

Birthweight (g) · pregnant women and their infants..

Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Birth weight: WMD 130.9 (95% CI 75.1 to 186.7), statistically significant. Umbrella review outcome-level evidence grade: Probable.

1 finding from 1 review

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

Ovarian cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Ovarian cancer: OR 0.83 (95% CI 0.63 to 1.09), not 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

Stroke · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Stroke: RR 0.61 (95% CI 0.50 to 0.75), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Signs and symptoms of respiratory disease · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

Higher circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration vs Lower circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration

Breast cancer · Participants in observational studies

The meta-analysis of observational studies reported a OR of 0.99 (95% CI 0.68 to 1.47) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

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

Colon cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Colon cancer: OR 0.78 (95% CI 0.56 to 1.07), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Repelling-magnet splints vs Bite-blocks

Side effects / adverse effects (unilateral crossbite; transverse problems) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review
  • Orthodontic and orthopaedic treatment for anterior open bite in children 2014 · Cochrane All outcomes
    About 4 months (treatment interrupted early)
    "After 4 months the open bite was observed to close in the magnet group, but in four out of these ten patients, transverse problems were observed (unilateral crossbite) which led to the interruption of the treatment…
    1 study · 10 participants
    GRADE not reported

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Position of the incisors (upper incisor inclination) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review
  • Orthodontic and orthopaedic treatment for anterior open bite in children 2014 · Cochrane All outcomes
    End of treatment (about 2 years)
    The angulation of the upper incisors with the palatal plane (1/ANSPNS) decreased on average 0.3 (SD 4.6) degrees in the control group, whereas in the treated group the mean retrusion was 4 (SD 4.6) degrees, P < 0.01.…
    1 study
    GRADE not reported

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

Colorectal cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Colorectal cancer: RR 0.70 (95% CI 0.58 to 0.84), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Alteration of hyperdivergent growth pattern · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review
  • Orthodontic and orthopaedic treatment for anterior open bite in children 2014 · Cochrane All outcomes
    End of treatment (about 2 years)
    Multiple cephalometric measures reported (Erbay 1995). Treated group: total anterior facial height (N-Me) +3.9 (SD 1.8) mm, upper anterior facial height (N-ANS) +3.3 (SD 1.2) mm; controls showed significantly greater…
    1 study
    GRADE not reported

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

CVD · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Cardiovascular disease: RR 0.66 (95% CI 0.57 to 0.77), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Economic evaluation (costs) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

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

Depression · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Depression (Cohort studies): HR 0.44 (95% CI 0.27 to 0.72), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

2 findings from 1 review

Higher circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration vs Lower circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration

Breast cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Breast cancer: OR 0.99 (95% CI 0.68 to 1.44), not 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

Ischaemic stroke · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Ischaemic stroke (Hazard ratio (cohort studies)): HR 0.66 (95% CI 0.55 to 0.80), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

2 findings from 1 review

Higher circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration vs Lower circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration

Colon cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Colon cancer: OR 0.88 (95% CI 0.57 to 1.35), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration vs Lower circulating 1,25-dihydroxyvitamin D (1,25(OH)2D) concentration

Aggressive prostate cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 1,25(OH)2D) for Aggressive prostate cancer: OR 0.75 (95% CI 0.48 to 1.17), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.

1 finding from 1 review

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

Gestational diabetes · pregnant women and their infants..

Meta-analysis of observational studies (higher vs lower maternal 25(OH)D) for Gestational diabetes: OR 0.67 (95% CI 0.53 to 0.85), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review