Nonadherence to Antituberculosis Medications: The Impact of Stigma and Depressive Symptoms

Medication nonadherence is common among tuberculosis (TB) patients in China and is of great concern. Herein, we determined the incidence of nonadherence in TB patients in central China and the impact of stigma and depressive symptoms on adherence; these issues are relatively unexplored. Across-sectional survey was performed, and 1,342 TB patients were recruited from TB dispensaries in three counties in Hubei province using a multistage sampling method. The patients completed structured questionnaires that addressed medication adherence, TB-related stigma, and depressive symptoms. The independent effects of stigma and depressive symptoms on adherence were determined via multinomial logistic regression analysis. The mean medication adherence score was 6.03 +/- 1.99. The percentage of TB patients with high, medium, and low medication adherence was 32.12%, 34.58%, and 33.31%, respectively. The impact of stigma and depressive symptoms on medication adherence was significant. TB patients with medium (odds ratios [OR]: 1.54, 95% confidence interval [CI]: 1.08-2.21) or high (OR: 5.32, 95% CI: 3.34-8.46) stigma or patients with mild (OR: 1.92,95% CI: 1.34-2.75) or severe (OR: 3.67,95% CI: 2.04-6.61) depressive symptoms showed a higher likelihood of having low adherence than those with low stigma or without depressive symptoms. TB-related stigma and depressive symptoms were common among TB patients in China, as was nonadherence, and independently associated with their adherence behavior. Social and psychological interventions that combat stigmatization and depression in TB patients should be adopted and optimized to improve medication adherence.