Psychometric properties of the Chinese version of the Self-Efficacy for Appropriate Medication Use Scale in patients with stroke

Abstract

BackgroundIt has been reported that stroke has a higher incidence and mortality rate in the People’s Republic of China compared to the global average. These conditions can be managed by proper medication use, but ensuring medication adherence is challenging.ObjectiveTo translate the Self-Efficacy for Appropriate Medication Use Scale into Chinese and test its validity and reliability in patients with stroke.MethodsInstrument performances were measured from January 15, 2015 to April 28, 2015 on a convenience sample of 400 patients with stroke recruited at four neurology departments of the First Affiliated Hospital of Zhengzhou University. Questionnaires included the Chinese versions of the Self-Efficacy for Appropriate Medication Use Scale (C-SEAMS) and the General Self-Efficacy Scale (C-GSE). Construct validity, convergent validity, internal consistency, and test–retest reliability were measured.ResultsItem analysis showed that item-to-total correlations were in the range of 0.362–0.672. Exploratory factor analysis revealed two factors (which accounted for 60.862% of total variance), with factor loading ranging from 0.534 to 0.756. Confirmatory factor analysis was performed to support the results, with an acceptable fit (χ2=73.716; df=64; P<0.01; goodness-of-fit index =0.902; adjusted goodness-of-fit index =0.897; comparative fit index =0.865; root-mean-square error of approximation =0.058). The convergent validity of the C-SEAMS correlated well with the validated measure of the C-GSE in measuring self-efficacy (r=0.531, P<0.01). Good internal consistency (Cronbach’s alpha ranged from 0.826 to 0.915) and test–retest reliability (Pearson’s correlation coefficient r=0.642, P<0.01) were found.ConclusionThe C-SEAMS is a brief and psychometrically sound measure for evaluating self-efficacy for medication adherence in the Chinese population with stroke.

Social support and medication adherence among adult myasthenia gravis patients in China: the mediating role of mental health and self-efficacy

“…The key role of self-efficacy we identified suggests that social support and mental health interventions with emphasis on improving patients’ self-efficacy in medication use would be highly beneficial for medication adherence. We found that compared to patients with chronic conditions in general [ 44 , 54 ], MG patients’ confidence in adhering to treatment were particularly impaired by concerns for drug side effects, uncertainty about medication schedule, and complexity of treatment regimen. Accordingly, interventions to enhance self-efficacy and thereby optimize medication adherence may consider support from family and friends that provide positive feedbacks on patients’ self-management, health education highlighting coping skills and knowledge about disease and treatment, and collaborative goal setting to strengthen patients’ ability and motivation to improve their self-efficacy and disease management.…”

“…The total score is calculated by summing the scores from all items, ranging from 13 to 39, with higher score indicating higher level of confidence. The Chinese version of SEAMS showed good reliability and internal consistency (Cronbach’s α ranged from 0.83 to 0.92) among stroke patients [ 44 ]. The internal consistency is also good in the present sample (Cronbach’s α = 0.94).…”

Association between medication literacy and medication adherence and the mediating effect of self-efficacy in older people with multimorbidity

“…Higher scores indicate higher levels of self-efficacy for appropriate medication. The reliability and validity of the Chinese version Self-Efficacy for Appropriate Medication Use Scale were evaluated in stroke survivors [ 28 ] with a Cronbach’s α coefficient of 0.934, a test-retest reliability of 0.932, and a scale-level content validity index (S-CVI) of 0.913.…”

The Mediating Effect of Self-Efficacy on the Relationship Between Medication Literacy and Medication Adherence Among Patients with Type 2 Diabetes

“… 32 The Chinese version of the SEAMS has good internal consistency (Cronbach’s α= 0.826–0.915) and validity. 32 …”