Diabetes Self-Efficacy Scale (DASES)
Also known as: DASES
The Diabetes Self-Efficacy Scale (DASES) is an 8-item self-report measure that assesses a patient's confidence in their ability to manage key diabetes self-care tasks: medication adherence, glucose monitoring, diet management, exercise, and coping with symptoms or complications. Developed by Lorig and colleagues based on social-cognitive theory, the DASES is grounded in Bandura's self-efficacy framework and demonstrates strong predictive validity for glycemic control, treatment adherence, and quality of life outcomes.
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When to use it
The DASES is indicated for all diabetes patients (type 1 and type 2) across care settings, particularly: (1) baseline assessment at diagnosis or clinic enrollment to identify low-efficacy patients at risk for poor adherence, (2) periodic reassessment (6–12 months) to monitor efficacy trajectory and response to education or coaching, (3) pre- and post-intervention measurement in diabetes education, behavioral coaching, or motivational interviewing studies, (4) identifying patients who would benefit from simplified regimens, peer support groups, or mental health referral due to low confidence, (5) shared decision-making about treatment intensification—low self-efficacy suggests need for support before adding complex therapies, and (6) research examining relationships between efficacy, adherence, and glycemic outcomes.
Strengths & limitations
- Theory-grounded: DASES is based on Bandura's well-validated self-efficacy framework, providing strong conceptual foundation for interpreting results.
- Predictive of clinical outcomes: self-efficacy is one of the strongest predictors of diabetes adherence and glycemic control; higher DASES scores correlate with better HbA1c, medication adherence, and quality of life.
- Modifiable and responsive: DASES improves following diabetes education, behavioral coaching, peer support, or cognitive-behavioral therapy; effective outcome for research on self-management interventions.
- Brief and practical: 8 items, 3–5 minute administration supports routine clinic use.
- Actionable clinically: low DASES identifies patients needing behavioral support rather than more medications; high DASES predicts readiness for treatment intensification or self-management challenges.
- Subjective confidence may not match objective ability: a patient may rate high confidence but have poor medication adherence or dietary compliance; DASES should be supplemented with behavioral assessment (pill count, food diary, HbA1c).
- Does not measure knowledge: DASES captures confidence, not knowledge of diabetes or self-management behaviors; a knowledgeable but anxious patient may have high knowledge but low efficacy and vice versa.
- Context-dependent: self-efficacy varies with circumstances (stress, illness, access to resources); snapshot DASES measurement may not capture fluctuations.
- Limited discriminative detail: single 8-item scale does not distinguish specific domains of efficacy (medication vs. exercise vs. diet); some patients have high efficacy for one area but low for others, obscured by total score.
- Cultural variation: self-efficacy expression and confidence calibration may vary across cultural groups; normative data are primarily from English-speaking populations.
Frequently asked
What DASES score indicates need for intervention?
DASES mean <4.0 (or total <32) indicates low to moderate self-efficacy and warrants structured support: diabetes education with behavioral coaching, individual or group counseling, peer support, or simplified regimen. Scores 4.0–6.0 suggest targeting education on specific weak areas (e.g., exercise confidence). Scores >7.0 indicate high confidence and typically need only maintenance support and periodic check-in.
How does DASES relate to actual adherence?
DASES correlates moderately with adherence (r ≈ 0.35–0.60) and HbA1c (r ≈ 0.30–0.50), meaning confidence predicts behavior but other factors also matter (cost, complexity, competing priorities). High DASES does not guarantee perfect adherence; supplementary assessment of actual medication use (pill count), diet compliance, and barriers is needed. DASES identifies *confidence* as modifiable target; adherence depends on both confidence and access/affordability/complexity.
Can DASES score improve quickly?
Yes, self-efficacy can improve rapidly with positive experiences, education, and support. Short-term interventions (4–6 weeks of behavioral coaching or peer support) can increase DASES by 1–2 points. However, sustaining improvement requires ongoing reinforcement; DASES often declines after intervention ends without maintenance support. Serial DASES monitoring (post-intervention, 3 months, 6 months, 1 year) tracks durability of gains.
Should I address low efficacy before intensifying diabetes medication?
Yes, in many cases. A patient with low DASES (mean <4.0) and HbA1c 9.0% may benefit more from efficacy-building support (education, coaching) and medication simplification than from adding insulin or other agents. Adding complexity to a regimen a patient lacks confidence in completing will likely worsen adherence. Consider starting medication adjustment alongside behavioral support for best results.
How does DASES differ from diabetes knowledge tests?
DASES measures *confidence* in self-management (motivational), while knowledge tests measure *information* about diabetes (cognitive). A patient may score high on knowledge (knows insulin injection technique) but low on DASES (lacks confidence to inject without supervision). Conversely, low knowledge with high DASES suggests willingness to learn. Comprehensive assessment includes both knowledge and efficacy.
Sources
- Lorig, K. R., Ritter, P. L., Villa, F. J., & Armas, J. (2009). Community-based peer-led diabetes self-management: A randomized trial. Diabetes Educator, 35(4), 641–651. DOI: 10.1177/0145721709335006 ↗
- Bandura, A. (1977). Self-efficacy: Toward a unifying theory of behavioral change. Psychological Review, 84(2), 191–215. DOI: 10.1037/0033-295X.84.2.191 ↗
How to cite this page
ScholarGate. (2026, June 3). Diabetes Self-Efficacy Scale (DASES). ScholarGate. https://scholargate.app/en/cardiology/diabetes-self-efficacy-scale
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