Aims: To assess baseline-adjusted differences in tuberculosis (TB)-prevention knowledge and attitudes after structured multicomponent health education in Indonesian primary care.
Methods: This non-randomized pre-test-post-test control-group study enrolled 40 patients with active TB at Lubuk Alung Health Center, Padang Pariaman, during November-December 2024. Participants were allocated non-randomly to intervention (n=20) or routine-counseling control (n=20) groups. The intervention was a 15-20-minute education package covering TB information, preventive behavior, and household environmental risk reduction. Knowledge was assessed with eight items scored 1-3 (range 8-24), and attitude with 15 items scored 1-5 (range 15-75). Separate ANCOVA models compared post-test scores while adjusting for baseline.
Findings: Knowledge increased from 17.25±2.10 to 20.45±1.57 in the intervention group and from 16.80±2.24 to 19.80±1.58 in the control group. The adjusted difference was 0.40 (95% CI -0.27 to 1.08; F(1,37)=1.47; p=0.233; partial η²=0.038). Attitude increased from 48.70±5.31 to 55.95±5.08 and from 45.20±4.07 to 49.20±3.75, respectively. The adjusted difference was 4.19 (95% CI 2.23 to 6.16; F(1,37)=18.72; p<0.001; partial η²=0.336); HC3 inference remained significant (p=0.002).
Conclusion: The intervention was associated with a higher baseline-adjusted post-test attitude score but not a significant knowledge advantage over routine counseling. Non-random allocation limits causal interpretation, and objective environmental change was not measured.