Country-level income (World Bank income classification) vs Higher- vs lower-income country categories: Oral health-related quality of life
- Population
- people aged 60 years and older living in the community
- Intervention
- Country-level income (World Bank income classification)
- Comparison
- Higher- vs lower-income country categories
- Outcome
- Oral health-related quality of life
Community-dwelling older adults in higher-income countries had better OHRQoL than those in lower-income countries (77.9, 95% CI 70.2 to 85.6 vs 66.9, 95% CI 56.7 to 77.0); the difference by income was statistically significant (ungraded).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Country-level income (World Bank income classification) vs Higher- vs lower-income country categories Oral health-related quality of life (OHRQoL sum score, transformed 0-100) · Community-dwelling elderly persons aged ≥60 years · Community-dwelling older adults across 25 countries, High-middle to high income Community-dwelling older adults in higher-income countries had better OHRQoL than those in lower-income countries (77.9, 95% CI 70.2 to 85.6 vs 66.9, 95% CI 56.7 to 77.0); the difference by income was statistically significant (ungraded). Association between oral health-related quality of life and structural determinants of health among elderly… (2025) All outcomes | MEAN 77.9 [70.2, 85.6] | Not reported | GRADE not reported |
Country-level income (World Bank income classification) vs Higher- vs lower-income country categories Oral health-related quality of life (OHRQoL sum score, transformed 0-100) · Community-dwelling elderly persons aged ≥60 years · Community-dwelling older adults across 25 countries, Low-middle income Community-dwelling older adults in higher-income countries had better OHRQoL than those in lower-income countries (77.9, 95% CI 70.2 to 85.6 vs 66.9, 95% CI 56.7 to 77.0); the difference by income was statistically significant (ungraded). Association between oral health-related quality of life and structural determinants of health among elderly… (2025) All outcomes | MEAN 66.9 [56.7, 77.0] | Not reported | GRADE not reported |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Association between oral health-related quality of life and structural determinants of health among elderly populations. a systematic… 2025 All outcomes | 23 August 2024 (records from January 2014 onward) | 6 | Not applicable |
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.