03440nas a2200469 4500000000100000008004100001260001600042653001500058653001000073653000900083653002200092653002600114653001100140653001000151653002100161653003000182653001100212653001100223653001200234653000900246653002500255653001600280653001700296653002600313653002600339653001600365100001700381700002200398700001600420700001400436700001400450700001600464700001900480700001600499700001200515245012200527856007700649300001000726490000600736520221400742022001402956 2011 d c2011 May 0310aAdolescent10aAdult10aAged10aAged, 80 and over10aAnti-Bacterial Agents10aBrazil10aChild10aChild, Preschool10aDrug Therapy, Combination10aFemale10aHumans10aleprosy10aMale10aMedication adherence10aMiddle Aged10aRisk Factors10aSocioeconomic Factors10aWithholding Treatment10aYoung Adult1 aHeukelbach J1 aAndré Chichava O1 aOliveira AR1 aHäfner K1 aWalther F1 aAlencar CHM1 aNovaes Ramos A1 aFerreira AC1 aAriza L00aInterruption and defaulting of multidrug therapy against leprosy: population-based study in Brazil's Savannah Region. uhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086809/pdf/pntd.0001031.pdf ae10310 v53 a

BACKGROUND: Low adherence to multidrug therapy against leprosy (MDT) is still an important obstacle of disease control, and may lead to remaining sources of infection, incomplete cure, irreversible complications, and multidrug resistance.

METHODOLOGY/PRINCIPAL FINDING: We performed a population-based study in 78 municipalities in Tocantins State, central Brazil, and applied structured questionnaires on leprosy-affected individuals. We used two outcomes for assessment of risk factors: defaulting (not presenting to health care center for supervised treatment for >12 months); and interruption of MDT. In total, 28/936 (3.0%) patients defaulted, and 147/806 (18.2%) interrupted MDT. Defaulting was significantly associated with: low number of rooms per household (OR = 3.43; 0.98-9.69; p = 0.03); moving to another residence after diagnosis (OR = 2.90; 0.95-5.28; p = 0.04); and low family income (OR = 2.42; 1.02-5.63: p = 0.04). Interruption of treatment was associated with: low number of rooms per household (OR = 1.95; 0.98-3.70; p = 0.04); difficulty in swallowing MDT drugs (OR = 1.66; 1.03-2.63; p = 0.02); temporal non-availability of MDT at the health center (OR = 1.67; 1.11-2.46; p = 0.01); and moving to another residence (OR = 1.58; 95% confidence interval: 1.03-2.40; p = 0.03). Logistic regression identified temporal non-availability of MDT as an independent risk factor for treatment interruption (adjusted OR = 1.56; 1.05-2.33; p = 0.03), and residence size as a protective factor (adjusted OR = 0.89 per additional number of rooms; 0.80-0.99; p = 0.03). Residence size was also independently associated with defaulting (adjusted OR = 0.67; 0.52-0.88; p = 0.003).

CONCLUSIONS: Defaulting and interruption of MDT are associated with some poverty-related variables such as family income, household size, and migration. Intermittent problems of drug supply need to be resolved, mainly on the municipality level. MDT producers should consider oral drug formulations that may be more easily accepted by patients. Thus, an integrated approach is needed for further improving control, focusing on vulnerable population groups and the local health system.

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