Factores asociados a la adherencia en el tratamiento de la infección tuberculosa / Factors associated with treatment adherence for tuberculosis infection

OBJETIVO: Analizar la adherencia al tratamiento de la infección tuberculosa (TIT) e identificar los factores de riesgo para su cumplimiento. DISEÑO: Estudio observacional de cohortes históricas. Emplazamiento: Hospital Universitari Sant Joan d'Alacant (Alicante). Participantes: Todos los sujetos con una prueba de tuberculina (PT) realizada durante el estudio de contactos (EC) de tuberculosis durante 6 años. RESULTADOS: Se incluyeron en el análisis 764 contactos. El 59,7% de los 566 pacientes que terminaron el EC presentaron infección tuberculosa (IT). De los pacientes con IT, el 45,6% no iniciaron tratamiento y los factores asociados fueron: edad (36-65 años; RR: 5,8; IC 95%: 1,2-27,5 y > 65 años; RR: 11,3; IC 95%: 2,0-64,0), relación social con el caso índice de tuberculosis (RR: 2,2; IC 95%: 1,2-3,8) e induración de la PT (≥ 15 mm; RR: 0,5; IC 95%: 0,3-0,9). La tasa de cumplimiento fue del 80,4% entre los que comenzaron el TIT. La pauta de tratamiento 7-9H se asoció con mayor cumplimiento del TIT (RR: 12,7; IC 95%: 1,5-107,3). CONCLUSIONES: La tasa de cumplimiento del TIT fue elevada entre los que iniciaron tratamiento. Casi la mitad de los contactos con IT no iniciaron tratamiento y los factores asociados fueron: edad, relación social e induración de la PT. La pauta de tratamiento se asoció con mayor cumplimiento. Debemos conocer con precisión los factores asociados a la adherencia al tratamiento de la IT en cada área de salud y actuar sobre los grupos de riesgo, y de esta manera aproximar el control global de la tuberculosis

OBJECTIVE: To analyze adherence to treatment of tuberculosis infection and to identify risk factors for its compliance. DESIGN: An observational historical cohort study. Setting: Hospital Universitari Sant Joan d'Alacant (Alicante). Participants: All patients with a tuberculin skin test (TST) done during tuberculosis contact tracing during 6 years. RESULTS: We included 764 tuberculosis contacts in the analysis. 59.7% of the 566 patients who completed the contact tracing, had tuberculosis infection (TI). Of the patients with TI, 45.6%had not started treatment for tuberculosis infection (TTBI). Factors associated with not starting TTBI were: age (36-65 years, RR: 5.8; 95% CI: 1.2-27.5, and > 65 years, RR: 11.3; 95% CI: 2.0-64.0), the social relationship with TB case (RR: 2.2; 95% CI 1.2-3.8), and the TST reaction (≥15 mm; RR: 0.5; 95% CI: 0.3-0.9). The completion rate for TTBI was 80.4% among people who started therapy. The treatment regimen was associated with greater compliance to TTBT (7-9H, RR: 12.7; 95% CI: 1.5-107.3). CONCLUSIONS: The treatment compliance rate of Tuberculosis infection was high among people who started therapy. Almost a half of the contacts with TI did not start treatment, and associated factors were: age, social relationship, and the TST reaction. The treatment regimen was associated with greater compliance. It is important to know the factors associated with adherence to treatment of TI in each health area, and focus efforts on risk groups; thereby approaching the global control of tuberculosis

[Factors associated with treatment adherence for tuberculosis infection]. / Factores asociados a la adherencia en el tratamiento de la infección tuberculosa.

OBJECTIVE: To analyze adherence to treatment of tuberculosis infection and to identify risk factors for its compliance. DESIGN: An observational historical cohort study. SETTING: Hospital Universitari Sant Joan d'Alacant (Alicante). PARTICIPANTS: All patients with a tuberculin skin test (TST) done during tuberculosis contact tracing during 6 years. RESULTS: We included 764 tuberculosis contacts in the analysis. 59.7% of the 566 patients who completed the contact tracing, had tuberculosis infection (TI). Of the patients with TI, 45.6% had not started treatment for tuberculosis infection (TTBI). Factors associated with not starting TTBI were: age (36-65 years, RR: 5.8; 95% CI: 1.2-27.5, and > 65 years, RR: 11.3; 95% CI: 2.0-64.0), the social relationship with TB case (RR: 2.2; 95% CI 1.2-3.8), and the TST reaction (≥ 15mm; RR: 0.5; 95% CI: 0.3-0.9). The completion rate for TTBI was 80.4% among people who started therapy. The treatment regimen was associated with greater compliance to TTBT (7-9H, RR: 12.7; 95% CI: 1.5-107.3). CONCLUSIONS: The treatment compliance rate of Tuberculosis infection was high among people who started therapy. Almost a half of the contacts with TI did not start treatment, and associated factors were: age, social relationship, and the TST reaction. The treatment regimen was associated with greater compliance. It is important to know the factors associated with adherence to treatment of TI in each health area, and focus efforts on risk groups; thereby approaching the global control of tuberculosis.