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Medication Adherence Assessment Questionnaire (MAS-12)3

Medication Adherence Assessment Questionnaire (MAS-12) Test

In about two minutes, answer 10 questions about medication routines, communication with healthcare professionals, and understanding of medicines. The Medication Adherence Assessment Questionnaire (MAS-12) Test highlights strengths and areas for reflection, helping you notice adherence patterns and prepare for more informed conversations about your treatment.

Questions: 102 minutes

Medication Adherence Assessment Questionnaire: test ticket with numbers

October 2, 2025October 2, 2025Material has been updatedOctober 2, 2025Material has been published

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2,488 completions

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Daniel Hall Psychologist · Test reviewer

2,153 likes

Scale Explorer

How the Scales are Structured

Agreement to Take MedicationAtTM

Measures the patient’s willingness to take medications as prescribed and make necessary lifestyle adjustments to support treatment.

example score8/10

8/10High consentexample score

2 – 4Low consent

5 – 7Moderate consent

8 – 10High consent

A score of 8 indicates high consent, reflecting a generally positive attitude toward following the prescribed medication regimen.

Readiness to Receive InformationRtRI

Assesses how willing the patient is to receive and use information about their medications as part of treatment involvement.

example score5/10

5/10Moderate readinessexample score

2 – 4Low readiness

5 – 7Moderate readiness

8 – 10High readiness

A score of 5 indicates moderate readiness, suggesting some openness to medication information but not consistently seeking or using it.

Collaboration With Healthcare ProvidersCWHP

Measures how actively the patient collaborates with healthcare professionals by discussing treatment and following professional recommendations.

example score10/15

10/15Moderate collaborationexample score

3 – 7Low collaboration

8 – 11Moderate collaboration

12 – 15High collaboration

A score of 10 indicates moderate collaboration, suggesting the patient is generally open to discussing treatment and often follows recommendations, though consistency may vary.

Regimen AdherenceRA

Measures how consistently a patient follows the prescribed medication regimen as part of maintaining a routine.

example score9/15

9/15Moderate consistencyexample score

3 – 7Low consistency

8 – 11Moderate consistency

12 – 15High consistency

A score of 9 indicates moderate consistency in maintaining the medication routine, with generally adequate adherence but some variability in following the regimen.

Overall Medication Adherence ScoreOMAS

This scale measures overall adherence to prescribed medication treatment, with higher scores indicating more consistent adherence.

example score26/50

26/50Moderate adherenceexample score

10 – 23Low adherence

24 – 36Moderate adherence

37 – 50High adherence

A score of 26 falls in the Moderate adherence range, suggesting generally partial consistency with the prescribed regimen.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Patients on long-term meds

46%OF USERS

People managing chronic conditions use it to check how consistently they take daily medications and what gets in the way.

Recently diagnosed patients

33%OF USERS

Those starting a new treatment take it to identify early doubts, side effects concerns, or routine problems before habits form.

Clinicians and pharmacists

21%OF USERS

Healthcare professionals use it during visits to quickly spot adherence barriers and tailor support or counseling.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.

Shaded area — where most people score

Dot — the average

You — your score lands on each curve after the test— your score, after the test

Consent to take medicationsCttm

You?

Average7.2

Typical rangeTypical6.1 – 8.4

Possible2 – 10

Readiness to Receive InformationRtRI

You?

Average5.6

Typical rangeTypical4.6 – 6.6

Possible2 – 10

Collaboration with healthcare professionalsCwhp

You?

Average10.6

Typical rangeTypical8.4 – 12.8

Possible3 – 15

Maintaining a routineMar

You?

Average6.5

Typical rangeTypical4.7 – 8.2

Possible3 – 15

Overall treatment adherence scoreOtas

You?

Average27.8

Typical rangeTypical22.9 – 32.7

Possible10 – 50

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SAMPLE QUESTIONS

Example Questions From the Test

This questionnaire assesses the use of medications that are currently prescribed to you. Unless otherwise specified, please base your responses on your experience over the past six months or so. If you have more than one medical condition, your responses should reflect your use of all medications. Note: In this questionnaire, the term “medications” refers to medicines taken by mouth, injections (e.g., insulin), ointments, medicated patches, and inhalers.

- Never
- Rarely
- Sometimes
- Often
- Always
- Never
- Rarely
- Sometimes
- Often
- Always
- Never
- Rarely
- Sometimes
- Often
- Always

These are 3 of the 10 real questions — the rest appear in the test. No sign-up needed to start.

WHAT THE TEST MEASURES

Medication Adherence Assessment Questionnaire (MAS-12) Test - Description and methodology of the test

compliance

For people managing prescribed treatment, the Medication Adherence Assessment Questionnaire (MAS-12) Test examines practical adherence and the factors that support it. It considers whether medicines are taken as directed, whether concerns are discussed with clinicians, and whether treatment information is understood. This medication compliance questionnaire offers a structured starting point for reflection.

What This Assessment Measures

Statements address taking prescribed doses, independent stopping, understanding effects, reporting problems, treatment routines, and clinician communication. This medication adherence tool shows stronger or less established tendencies.

The displayed result types are:

Agreement to Take Medication (2-10) measures willingness to take medicines as prescribed and modify lifestyle when necessary: Low consent 2-4; Moderate consent 5-7; High consent 8-10.
Readiness to Receive Information (2-10) measures willingness to obtain and use medication information and participate actively in treatment: Low readiness 2-4; Moderate readiness 5-7; High readiness 8-10.
Collaboration With Healthcare Providers (3-15) measures engagement with providers; Low collaboration 3-7, Moderate collaboration 8-11, High collaboration 12-15.
Regimen Adherence (3-15) measures consistency in following the regimen; Low consistency 3-7, Moderate consistency 8-11, High consistency 12-15.
Overall Medication Adherence Score (10-50) reflects total adherence; Low adherence 10-23, Moderate adherence 24-36, High adherence 37-50.

Methodology and Evidence Base

Each statement uses a five-point response from Never to Always. The self-report format asks respondents to describe recent routines, understanding, motivation, and communication. Responses are combined into the displayed subscales and total score; this questionnaire provides score ranges and result bands but no documented clinical cutoff rule.

The closest published reference is the 12-item Medication Adherence Scale (MAS-12), studied in Japanese patients with chronic disease and later adapted for a Russian-speaking diabetes sample. Reliability and validity evidence applies to that published instrument. This medication-taking assessment is conceptually consistent with it, but the online version has not been validated by those studies.

Results are best read as a structured snapshot, not a fixed personal trait. Higher values indicate more favorable adherence-related tendencies under the catalogue definitions. The published MAS-12 evidence does not establish population norms or standardization for this online questionnaire.

Self-report scores may shift with recent routines, side effects, access to medicines, memory, health changes, and comfort speaking openly. The result can highlight topics to review when considering how treatment is managed and discussed.

Author: Donald E. Morisky

Literature:

Epishin VE, Kalashnikova MF, Likhodey NV, Bondareva IB, Kaurova AM, Tulupova MV, Nikolaev NA, Fadeev VV. Adaptation of the 12-item medication adherence scale (the Questionnaire for assessment of adherence to Medication) on a Russian-speaking sample of patients with type 1 and type 2 diabetes mellitus. Problems of Endocrinology. 2024;70(4):32-43. 10.14341/probl13372
Ueno H, Yamazaki Y, Yonekura Y, Park MJ, Ishikawa H, Kiuchi T. Reliability and validity of a 12-item medication adherence scale for patients with chronic disease in Japan. BMC Health Services Research. 2018;18(1):592. 10.1186/s12913-018-3380-7

Updated: 2025-10-02