MARS is a self-reported instrument, in a 10 and 5 items version regarding medication adherence. Each item is rated on a 5-point Likert scale, and the range of the MARS-5 total score is between 5 and 25 and of the MARS-10 between 10-50.
Year: 2000 Authors: Thompson et al Disease: COPD Outcome: Adherence to treatment and recommended visits
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Measure: Adherence to medication
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Number of RCTs that used this tool (in our study): 3
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Scale: Higher scores are better Reference: Thompson, K., Kulkarni, J., & Sergejew, A. A. (2000). Reliability and validity of a new Medication Adherence Rating Scale (MARS) for the psychoses. Schizophrenia research, 42(3), 241–247. 
Target population: General population Focus Generic Notes There is a disease-specific version for lungdiseases Translations available: Yes Original version validated: Yes Original language: English Form of delivery: Self-reported Licence needed: Yes 10.1016/s0920-9964(99)00130-9