Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

821 questions · 993 findings · 80 reviews · Dental caries

No studies found 60 · 6%GRADE not reported 749 · 75.4%Very low 109 · 11%Low 41 · 4.1%Moderate 34 · 3.4%High 0 · 0%

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

Disability (developmental, intellectual, or sensory) vs Persons without disabilities

Oral health-related quality of life · Persons with disabilities (children and adults with autism, Down syndrome, cerebral palsy, hearing impairment, or multiple disabilities)…

Persons with disabilities in Saudi Arabia report poorer overall oral health-related quality of life and greater oral-health impact than those without disabilities, synthesized narratively without a pooled estimate (ungraded).

1 finding from 1 review

Child has a disability (special needs) vs Parents/caregivers of children without disabilities

Parental concern / caregiver stress indices (parental perception and parenting stress about the child's oral health) · Parents/caregivers of children with disabilities (special needs; autism spectrum disorder or unspecified disability) in Saudi Arabia

Parents of children with disabilities in Saudi Arabia report significantly greater concern/stress about their child's oral health than parents of children without disabilities (pooled SMD 0.43, 95% CI 0.23 to 0.63; I2=0%; 3 studies); not GRADE-rated.

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban setting

Determinants of oral diseases · Adult residents of slums and non-slum urban settings of LMICs

Older age, lower education and income, poor oral hygiene, and disadvantaged residential setting were associated with oral diseases; directions varied across studies.

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population

Oral disease burden, slum vs non-slum urban comparison · Adult residents of slums and non-slum urban settings of LMICs

Where compared, oral disease burden is generally higher in slums than non-slum urban/national populations (5 studies; 1 found no difference); ungraded.

1 finding from 1 review

Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)

Poor (inadequate) oral hygiene (prevalence) · Children (<18 years) with intellectual and developmental disabilities (IDD) in India

Poor oral hygiene affects about 38% of children with IDD in India (pooled prevalence 0.38, 95% CI 0.21-0.59; high heterogeneity; ungraded).

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban setting

Oral disease prevalence · Adult residents of slums and non-slum urban settings of LMICs

Oral disease prevalence was generally high and worse in slum settings where compared, but no meta-analysis was conducted.

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population

Self-perceived (self-rated) oral health status · Adult residents of slums and non-slum urban settings of LMICs

Most participants perceive their oral health as satisfactory (one study 39%), more so among younger, male, higher-SES and employed people; ungraded.

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban setting

Self-perceived (self-rated) oral health status · Adult residents of slums and non-slum urban settings of LMICs

Most participants reported positive perceptions of oral health, despite observed disease burden.

1 finding from 1 review

Edentulism (complete or partial missing teeth) vs Individuals without edentulism

Oral health-related quality of life · Indian elderly

One study found edentulism did not affect OHRQoL (dichotomous); ungraded.

3 findings from 1 review

Safe housing / favorable household conditions vs Unsafe housing / poor household conditions

Oral health-related quality of life · Adolescents (10-19 years)

Safe housing and favorable household conditions are associated with better OHRQoL in adolescents (narrative synthesis; no pooled estimate or GRADE rating).

1 finding from 1 review
  • Oral-health-related quality of life in adolescents: umbrella review. 2023 All outcomes
    Community/school/clinic settings; adolescents 10-19 years; included reviews conducted in multiple countries
    having parents who can provide dental care and safe housing are positive predictors for OHRQoL. Socioeconomic factors related to the area of residence, satisfaction with oral health and dental care were shown to be…
    Studies not reported
    GRADE not reported

Malocclusion vs No malocclusion

Oral health-related quality of life · Indian children, adolescents and adults

One GOHAI study found no significant difference in OHRQoL by malocclusion status; ungraded.

3 findings from 1 review