Performance of two questionnaires to measure treatment adherence in patients with Type-2 Diabetes
2009

Measuring Treatment Adherence in Type-2 Diabetes Patients

Sample size: 238 publication 10 minutes Evidence: moderate

Author Information

Author(s): Prado-Aguilar Carlos A, Martínez Yolanda V, Segovia-Bernal Yolanda, Reyes-Martínez Rosendo, Arias-Ulloa Raul

Primary Institution: Instituto Mexicano del Seguro Social

Hypothesis

Can two novel questionnaires effectively measure treatment adherence in Type-2 diabetic patients?

Conclusion

The Medical Prescription Knowledge questionnaire is the most effective tool for identifying non-adherence in Type-2 diabetic patients.

Supporting Evidence

  • The study found that only 27% of patients adhered to their treatment.
  • The Medical Prescription Knowledge questionnaire had a high negative predictive value of 82.2%.
  • Patients with weak medical prescription knowledge had a significantly lower probability of good adherence.

Takeaway

This study created two questionnaires to help doctors understand if diabetes patients are taking their medicine correctly, and one of them worked really well.

Methodology

Two questionnaires were developed to assess patients' knowledge of their medication and their attitudes towards adherence, with pill count used as the gold standard.

Limitations

The study's findings may not apply to all diabetic patients, especially those with complications or on insulin.

Participant Demographics

{"gender_distribution":{"female":62.2,"male":37.8},"education_level":{"basic":79.4,"intermediate":10.1,"higher":10.5},"mean_age":58.7,"hypertension_prevalence":63.0,"polytherapy_prescription":66.0}

Statistical Information

Confidence Interval

{"sensitivity":"68.1% (58.6–76.6)","negative_predictive_value":"82.2% (76.1–87.3)","negative_likelihood_ratio":"0.58 (0.44–0.78)","post_test_probability_negative":"0.16 (0.10–0.25)","specificity":"54.5% (48.6–60.3)"}

Digital Object Identifier (DOI)

10.1186/1471-2458-9-38

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