The study sample comprised 64 respondents selected using total sampling. Data were collected using the Tuberculosis Self-Efficacy Scale (TBSES) and the Morisky Medication Adherence Scale (MMAS-8). Data analysis was carried out using univariate and bivariate methods, employing Spearman’s rank correlation test with a significance level of α = 0.05. The characteristics of the respondents showed that the majority were male, comprising 35 respondents (54.7 per cent); aged 18–40 years, comprising 32 respondents (50.0 per cent); with a secondary school education, comprising 33 respondents (51.6 per cent); and having undergone treatment for 3–6 months, comprising 46 respondents (71.9 per cent). The results of the study showed that the majority of respondents had high self-efficacy (57 respondents, 89.1%), moderate self-efficacy (6 respondents, 9.4%), and low self-efficacy (1 respondent, 1.6%). Medication adherence was high in 47 respondents (73.4%), moderate in 14 respondents (21.9%), and low in 3 respondents (4.7%). The results of the bivariate analysis using Spearman’s rank test yielded a p-value of 0.000 (<0.05) and a correlation coefficient (r) of 0.661, indicating a positive relationship with a strong correlation between self-efficacy and medication adherence. The higher a patient’s self-efficacy, the higher their adherence to tuberculosis medication.
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