Evidence Gaps

What do systematic reviews say?

1 questions · 2 findings · 1 reviews · Dental caries

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No studies found 0 · 0%GRADE not reported 2 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

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

Hip Fracture · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Hip fracture (Population-based controls): log ratio of geometric mean -0.51 (95% CI -0.64 to -0.38), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

2 findings from 1 review

Vitamin D and multiple health outcomes: umbrella review of systematic reviews and meta-analyses of observational… 2014 All outcomes
Population-based controls
log ratio of geometric mean -0.51 [-0.64, -0.38]
9 studies · 1655 participants
GRADE not reported
Vitamin D and multiple health outcomes: umbrella review of systematic reviews and meta-analyses of observational… 2014 All outcomes
Hospital-based controls
log ratio of geometric mean -0.26 [-0.33, -0.23]
8 studies · 2201 participants
GRADE not reported