Objective  To evaluate the disability weight (DW) of patients with permanent tooth caries in Shiyan city of Hubei province.

Methods  Patients with permanent tooth caries in Dong Feng Stomatological Hospital Affiliated to Hubei University of Medicine and its two sub-clinics were investigated and the DW was obtained by patient EQ-VAS score assignment, investigator assignment and expert assignment. Mann-Whitney U test and Kruskal-Wallis H test were used for single-factor analysis, and multiple linear regression was used to analyze the influencing factors of DW obtained by the three assignment methods.

Results  A total of 220 patients participated in the investigation, mostly aged 21-35 years with a predominantly female and student population.  Patient EQ-VAS self-rated DW[0.300 (0.200, 0.500)], investigator-assigned DW[0.220 (0.096, 0.400)] and expert-assigned DW[0.220 (0.096, 0.400)] were higher than GBD 2019 DW[0.010 (0.005, 0.019)]. Single factor tests showed that the differences in self-assessed DW, investigator-assigned DW, and expert-assigned DW were statistically significant for patients of different ages, monthly incomes, and educational levels. Univariate and multiple regression analysis of DW showed that the older the age, the larger the DW and the more severe the patient's disabling condition; the higher the education, the higher the monthly income, the smaller the DW and the less severe the patient's disabling condition (P<0.05).

Conclusion  The DW of permanent tooth caries patients measured by different assignment methods in Shiyan city of Hubei province are different. Older age, lower education, and lower monthly income are risk factors for DW in patients with permanent tooth caries, and local public health policies should focus on this group of people in the future.

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