Resumo

BENITEZ, Alejandro et al. Adherence to treatment in patients with rheumatoid arthritis. Rev. argent. reumatolg. [online]. 2019, vol.30, n.1, pp.28-34. ISSN 0327-4411.

Objective: This study aims to evaluate the compliance of pharmacological treatment in patients with RA and identify the factors that may affect it. Materials and methods: Observational, analytical and cross-sectional study. Surveys were conducted on 176 randomly selected patients from a private center specialized in Rheumatology located in the southern suburbs of the province of Buenos Aires (CER Medical Institute - Quilmes), between September 2015 and July 2016, by telephone by trained non-medical volunteers of the Articular Foundation. The BAM, CQR19 questionnaires were used and the patient’s perception of their degree of adherence to the treatment was investigated, dividing it into two groups: total compliance or partial/no compliance. Sociodemographic data, disease status, treatment, comorbidities and habits were collected. The following statistical tests were used: one-way ANOVA to evaluate differences in mean levels of CQR19 and qualitative variables; Brown-Forsythe test to determine the association between CRQ and various variables, non-parametric Spearman’s Rho correlation between CQR19 and quantitative variables and logistic regression to explain adherence to treatment (CQR19 grouped). The data was analyzed using the SPSS program (version 19.0). Results: 85.8% were women and the average age was 55.1 years. 51.1% of patients consider that their health is good in relation to RA and 40.9% consider it to be fair. The most frequent treatment was oral MTX (79%). Monotherapy was the most referred therapeutic modality (79.5%) and the mean treatment time is 4.4 years. The attitude of the patients towards the medicines showed agreement in the 5 items that correspond to the dimension of necessity of the BAM. The level of agreement-disagreement was more heterogeneous in the items of the concern dimension. CQR19 showed a high level of agreement in most of the positive items and a high level of disagreement in most of the negative items. The only variables that were associated with higher CQR were the presence of comorbidities (Brown-Forsythe=7.960, p=0.005) and concomitant medication (Brown-Forsythe=7.529, p=0.007). There was also a significant association between CRQ19 and smoking (F=0.019, p=0.981). Significant correlation was observed between CQR and BAM Specific-Necessity (Rho=0.379, p <0.001) and between CQR and BAM Specific-Concern (Rho=-0.188; p=0.012). Greater adherence was observed when the patient felt the need to comply with the medication (O.R.=1.342, p=0.012) and when least concerned about it (O.R.=0.870, p=0.047). We detected less compliance with treatment in married patients or those living with a partner (Chi²=7.448, p=0.024) and with a higher educational level (Chi²=6.313, p=0.043). When the compliance of the prescribed medication is evaluated by direct inquiry to the patients, the level of compliance is higher. Conclusion: It is a population with a moderate level of adherence. Greater awareness of the need for medication and a lower level of concern about it generate greater adherence. Patients overestimate medication compliance when they are interrogated directly, which is why it is mandatory to use another evaluation method. The greater knowledge of the adherence of patients with RA will allow us to develop tools that improve this aspect in the long term.

Palavras-chave : adherence; treatment; rheumatoid arthritis.

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