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Objective <p>The concept of oral health-related quality of life (OHRQoL) has gained significant attention, and self-rated oral health (SROH)—a brief measure to evaluate oral health—has been reported to correlate with OHRQoL. The relationship between education and OHRQoL has shown divergent findings. This study aims to investigate the relationship among education, SROH and OHRQoL.</p> Methods <p>This study involved 1917 participants and their demographic information, SROH and OHRQoL were collected. We used Oral Health Impact Profile-5(OHIP-5) to evaluate OHRQoL. Correlations between variables and moderating effect were conducted through statistical analysis.</p> Results <p>A poorer SROH was significantly correlated with higher OHIP-5 scores (<i>r</i> = 0.41, <i>p</i> &lt; 0.001). Although highly educated individuals exhibited higher OHIP-5 scores, the association was weak (<i>r</i> = 0.11, <i>p</i> &lt; 0.001). After adjusting for confounders, OHIP-5 remained associated with SROH (<i>p</i> ≤ 0.035) and education (<i>p</i> ≤ 0.008).The orthogonal polynomial regression test showed that Education-Linear (β = 1.477, <i>p</i> &lt; 0.001), SROH-Linear (β = 4.572, <i>p</i> &lt; 0.001) and SROH-Quadratic (β = 1.155, <i>p</i> &lt; 0.001) were significant. The interaction test between SROH-Linear and Education-Linear(β = 1.213, <i>p</i> = 0.035) was significant demonstrating the moderating effect of education between SROH and OHIP-5.</p> Conclusion <p>SROH correlated with OHRQoL while education exhibited statistically significant but clinically negligible correlation with OHRQoL. Education moderated the relationship between SROH and OHRQoL.</p> Clinical relevance <p>Education’s moderating role suggests high-educated individuals may exhibit greater sensitivity and elevated expectations to oral health, intensifying the SROH-OHRQoL link. Considering the limited practical significance of education-OHRQoL, the role of education can be overlooked in similar population when using the OHIP scale.</p>

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Education moderates the association between self-rated oral health and oral health-related quality of life

  • 期刊论文

  • 发表日期：

    2025年5月29日

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  • Tianqi Wang,
  • Yunhao Zheng,
  • Yanyu Sun,
  • Na Wei,
  • Liang Hao,
  • Yuan Yue,
  • Xin Xiong

摘要

Objective

The concept of oral health-related quality of life (OHRQoL) has gained significant attention, and self-rated oral health (SROH)—a brief measure to evaluate oral health—has been reported to correlate with OHRQoL. The relationship between education and OHRQoL has shown divergent findings. This study aims to investigate the relationship among education, SROH and OHRQoL.

Methods

This study involved 1917 participants and their demographic information, SROH and OHRQoL were collected. We used Oral Health Impact Profile-5(OHIP-5) to evaluate OHRQoL. Correlations between variables and moderating effect were conducted through statistical analysis.

Results

A poorer SROH was significantly correlated with higher OHIP-5 scores (r = 0.41, p < 0.001). Although highly educated individuals exhibited higher OHIP-5 scores, the association was weak (r = 0.11, p < 0.001). After adjusting for confounders, OHIP-5 remained associated with SROH (p ≤ 0.035) and education (p ≤ 0.008).The orthogonal polynomial regression test showed that Education-Linear (β = 1.477, p < 0.001), SROH-Linear (β = 4.572, p < 0.001) and SROH-Quadratic (β = 1.155, p < 0.001) were significant. The interaction test between SROH-Linear and Education-Linear(β = 1.213, p = 0.035) was significant demonstrating the moderating effect of education between SROH and OHIP-5.

Conclusion

SROH correlated with OHRQoL while education exhibited statistically significant but clinically negligible correlation with OHRQoL. Education moderated the relationship between SROH and OHRQoL.

Clinical relevance

Education’s moderating role suggests high-educated individuals may exhibit greater sensitivity and elevated expectations to oral health, intensifying the SROH-OHRQoL link. Considering the limited practical significance of education-OHRQoL, the role of education can be overlooked in similar population when using the OHIP scale.