Searchable Title

Satisfaction with Medication Scale (SAMS) (appears in: What Contributes to Patient and Parent Satisfaction with Medication in the Treatment of Children with ADHD? A Report on the Development of a New Rating Scale.) Copyright: Creative Commons License.

Reference Type

Journal Article

Authors, Section

Gortz-Dorten, A.; Breuer, D.; Hautmann, C.; Rothenberger, A.; Dopfner, M.

Title, Section

Satisfaction with Medication Scale (SAMS) (appears in: What Contributes to Patient and Parent Satisfaction with Medication in the Treatment of Children with ADHD? A Report on the Development of a New Rating Scale.) Copyright: Creative Commons License.

Publication Year

2011

Journal Title

European Child & Adolescent Psychiatry

Volume

20

Issue

Supplement 2

Pages

S297-S307

Availability

online

PMID

PMID: 21901412

DOI

10.1007/s00787-011-0207-z

Abstract

Satisfaction with medication is important in the evaluation of overall treatment outcome. There is a lack of consistent and validated rating scales for satisfaction with medication in ADHD, therefore comparison across studies is difficult. Here, we analyse the psychometric properties of the satisfaction with medication scale (SAMS), a new item-based questionnaire that assesses satisfaction with ADHD medication. Furthermore, we evaluate the predictive effect of ADHD symptoms and quality of life (QoL) on satisfaction. Data on satisfaction with Equasym XL(®) (methylphenidate) were collected in the OBSEER study using the parent (SAMS-P, n = 589) and patient (SAMS-S, n = 552) versions of the SAMS questionnaire. Internal consistency, item-total and cross-informant correlations, and the stability of satisfaction ratings over time were assessed. Satisfaction with medication scores were then correlated with ratings of ADHD symptoms and QoL. Rates of overall satisfaction with Equasym XL(®) among parents and children were high (>70%), as was internal consistency for both SAMS-P and SAMS-S (Cronbach's alpha > 0.9). Similarly, item-total correlations were high (r = 0.71-0.90) for SAMS-P and medium-high (r = 0.57-0.77) for SAMS-S. Cross-informant correlations and the stability of satisfaction ratings were moderate (r = 0.54-0.59 and 0.48-0.60, respectively). ADHD symptom and QoL ratings were significantly negative and positive predictors of satisfaction, explaining 36-52% of satisfaction variance at the final visit. The results show that parent and patient satisfaction was high and could be assessed reliably with the new SAMS questionnaire. Parent and patient ratings were moderately correlated, and symptom severity, functional impairment and QoL were the most significant predictors of satisfaction.

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