What do systematic reviews say?

Higher vs lower FiO2 or targets of arterial oxygenation

• Higher versus lower fractions of inspired oxygen or targets of arterial oxygenation for adults admitted to the… 2023 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 1649 participants
  Very low

Higher dental caries experience vs Caries-free controls

Higher dental caries experience was associated with substantially higher odds of poor OHRQoL (OR 1.66, 95% CI 1.43-1.88; 6 studies; high heterogeneity I2=83.5%; ungraded).

• The Association of Oral Health Status, demographic characteristics and socioeconomic determinants with Oral… 2020 All outcomes

  Upper-middle-income countries (5 studies) and one high-income country; studies 2011-2017
  OR 1.66 [1.43, 1.88]
  6 studies
  GRADE not reported

Higher parental / maternal education vs Lower parental education (reference)

Higher parental education is associated with better OHRQoL in adolescents (narrative synthesis; no pooled estimate or GRADE rating).

• 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
  Adolescents from families with higher incomes and higher levels of maternal education have better OHRQoL scores [34]. Children from families with high income, parental education and family economy had better OHRQoL [42].
  Studies not reported
  GRADE not reported

Higher family income / socioeconomic status vs Lower income / worse socioeconomic status

Higher family income / better socioeconomic status is associated with better OHRQoL in adolescents (narrative synthesis; no pooled estimate or GRADE rating).

• 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
  Adolescents from families with higher incomes and higher levels of maternal education have better OHRQoL scores [34]. Worse oral health status, older age, female sex and worse socioeconomic status were significantly…
  Studies not reported
  GRADE not reported