Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

48 questions · 58 findings · 9 reviews

No studies found 2 · 3.4%GRADE not reported 51 · 87.9%Very low 0 · 0%Low 1 · 1.7%Moderate 1 · 1.7%High 3 · 5.2%

Human Development Index (HDI) vs Higher vs lower HDI categories

Oral health-related quality of life · people aged 60 years and older living in the community

Older adults in higher-HDI countries had better OHRQoL (high 79.9, 95% CI 74.4 to 85.5; very high 78.4, 95% CI 71.1 to 85.8) than those in medium-HDI countries (63.5, 95% CI 54.3 to 72.7); the difference by HDI was statistically significant (ungraded).

3 findings from 1 review

Country-level unemployment rate vs Higher vs lower unemployment-rate categories

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly across country-level unemployment-rate categories; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Health expenditure per capita vs Higher vs lower per-capita health expenditure categories

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly across per-capita health-expenditure categories; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Country-level edentulism prevalence (Global Burden of Disease) vs Low vs high edentulism prevalence

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly by country-level edentulism prevalence; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Out-of-pocket health expenditure vs Lower vs higher out-of-pocket expenditure categories

Oral health-related quality of life · people aged 60 years and older living in the community

Lower out-of-pocket health expenditure was associated with better OHRQoL (83.9, 95% CI 75.2 to 92.6 vs 67.5, 95% CI 58.5 to 76.5); the difference was statistically significant (ungraded).

2 findings from 1 review

Country-level dental caries prevalence (Global Burden of Disease) vs Low vs high dental caries prevalence

Oral health-related quality of life · people aged 60 years and older living in the community

Lower country-level dental caries prevalence was associated with better OHRQoL (low-prevalence pooled mean 81.5, 95% CI 76.5 to 86.6, higher than high-prevalence countries); statistically significant (ungraded).

1 finding from 1 review

Malocclusion vs No malocclusion

Poor oral health-related quality of life (OHRQoL) · Adolescents (10-19 years)

Malocclusions probably have a negative effect on OHRQoL in adolescents, after adjustment for confounders (moderate certainty).

1 finding from 1 review

Dental caries vs Caries-free controls

Oral health-related quality of life · Indian children aged 3-5 years

In children aged 3-5 years, early childhood caries was significantly associated with poorer OHRQoL (narrative; 3 studies); ungraded.

1 finding from 1 review