Publication details

Low income is associated with impaired jaw function via anxiety and depression in patients with temporomandibular disorders

Authors

ZHENG Yunhao ZHOU Xueman HUANG Yi LU Jinjin CHENG Qiaoyu FAN Peidi XIONG Xin

Year of publication 2023
Type Article in Periodical
Magazine / Source Journal of Oral Rehabilitation
MU Faculty or unit

Faculty of Social Studies

Citation
Web https://onlinelibrary.wiley.com/doi/10.1111/joor.13579
Doi http://dx.doi.org/10.1111/joor.13579
Keywords anxiety; depression; income; jaw function; social inequalities; temporomandibular disorders
Attached files
Description Objective: The association between jaw function and income in patients with temporomandibular disorders (TMDs) remain unclear. The aim of this study was to explore this association and its relationship with anxiety and depression.Subjects and Methods: A total of 451 TMD patients, including 361 males and 90 females, participated in this study. The sociodemographic information of patients and their questionnaires including the Generalised Anxiety Disorder 7-item (GAD-7), Patient Health Questionnaire 9-item (PHQ-9), and Jaw Functional Limitation Scale-8 (JFLS-8) were collected. Patients were divided into the high-income and low-income groups based on a household per capita income of 6000 RMB per month. Multiple regression and mediation analysis were used to explore the association between variables. The bootstrap method was applied to estimate confidence intervals (CIs).Results: Higher JFLS-8 scores were significantly correlated with higher GAD-7 scores (r = 0.361, p < .001), PHQ-9 scores (r = 0.339, p < .001). Females and patients with low income had statistically higher JFLS-8 scores (p < .01, p < .001). Mediation analysis with 10 000 bootstrap simulations revealed a significant direct association between JFLS-8 scores and income (-2.920, 95% CI [-4.757, -1.044], p = .002). A significant indirect association of JFLS-8 scores with income via GAD-7 scores and PHQ-9 scores was also observed (-0.889, 95% CI [-1.728, -0.164], p = .025), accounting for 23.3% of the total association.Conclusions: Low income is associated with impaired jaw function via anxiety and depression in patients with TMD. Clinicians may need to pay more attention to the psychological status of low-income TMD patients in clinical practice.

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