Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

136 questions · 139 findings · 26 reviews

No studies found 12 · 8.6%GRADE not reported 25 · 18%Very low 36 · 25.9%Low 43 · 30.9%Moderate 19 · 13.7%High 4 · 2.9%

Depression and social isolation (psychosocial strain) vs No depression or lower psychosocial strain

Antibody titres to periodontal pathogens · Adults with periodontitis

In one case-control study, depression as a marker of social isolation was associated with elevated antibody titres to periodontal pathogens at baseline and 1-year follow-up; not pooled (ungraded).

1 finding from 1 review

Intervention not reported

Serum inflammatory cytokines (IL-1b, IL-6) and cortisol in periodontitis
1 finding from 1 review

High maternal allostatic load (chronic stress) and low socioeconomic status vs Lower maternal allostatic load

Dental caries in children · Mother-child pairs

In one cross-sectional study, higher maternal allostatic load was associated with child dental caries experience and with health-related maternal care-taking behaviours; not pooled (ungraded).

1 finding from 1 review

Low socioeconomic status and family financial stress vs Higher socioeconomic status and lower stress

Salivary cortisol, cariogenic bacterial load and dental caries · Kindergarten-age children

In one cross-sectional study of children, low socioeconomic status, higher basal salivary cortisol and higher cariogenic bacterial counts were each independently associated with higher dental caries risk; not pooled (ungraded).

1 finding from 1 review

Low socioeconomic position and adverse behavioural factors vs Higher socioeconomic position and fewer adverse behaviours

Systemic inflammation (C-reactive protein) and periodontal disease progression · General-population adults (German cohort)

In one 5-year longitudinal study, accumulation of low socioeconomic and behavioural factors was associated with greater periodontal disease progression and higher C-reactive protein; not pooled (ungraded).

1 finding from 1 review

Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)

Death from any cause · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)

It is very uncertain whether long‐stored ('older') PRBC (≥ 21 days of storage) changes death from any cause compared with short‐stored (fresh) PRBC (< 21 days of storage) (very low certainty).

1 finding from 1 review

Long‐stored ('older') PRBC (≥ 21 days of storage) vs short‐stored (fresh) PRBC (< 21 days of storage)

Transfusion‐related acute lung injury ‐ not measured · patients requiring blood transfusion (children with malaria and adults with a traumatic injury)

The review found no eligible studies for this question.

1 finding from 1 review