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Revision and validation of the medication adherence self-efficacy scale (MASES) in hypertensive African Americans

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Abstract

Study purpose was to revise and examine the validity of the Medication Adherence Self-Efficacy Scale (MASES) in an independent sample of 168 hypertensive African Americans: mean age 54 years (SD = 12.36); 86% female; 76% high school education or greater. Participants provided demographic information; completed the MASES, self-report and electronic measures of medication adherence at baseline and three months. Confirmatory (CFA), exploratory (EFA) factor analyses, and classical test theory (CTT) analyses suggested that MASES is unidimensional and internally reliable. Item response theory (IRT) analyses led to a revised 13-item version of the scale: MASES-R. EFA, CTT, and IRT results provide a foundation of support for MASES-R reliability and validity for African Americans with hypertension. Research examining MASES-R psychometric properties in other ethnic groups will improve generalizability of findings and utility of the scale across groups. The MASES-R is brief, quick to administer, and can capture useful data on adherence self-efficacy.

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Acknowledgments

Preparation of this manuscript was supported by Grants R01 HL 69408, R01 HL078566, to Dr. Ogedegbe, and R24 HL076857 from the National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA. Dr. Fernandez was supported by minority supplement to grant R01HL078566-02S1 and the NIH LRP in Health Disparities Research. Dr. Schoenthaler was supported by grant F31HL081926. We are grateful to David Y. Berger and David Statman for their assistance with data cleaning for this project.

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Authors and Affiliations

  1. New York University School of Medicine, VA New York Harbor 423 E. 23rd St., 15-167AN, New York, NY, 10010, USA

    Senaida Fernandez & Antoinette M. Schoenthaler

  2. St. John’s University, Queens, NY, USA

    William Chaplin

  3. New York University School of Medicine, VA New York Harbor 423 E. 23rd St., 15-168, New York, NY, 10010, USA

    Gbenga Ogedegbe

Authors
  1. Senaida Fernandez
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  2. William Chaplin
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  3. Antoinette M. Schoenthaler
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  4. Gbenga Ogedegbe
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Corresponding authors

Correspondence to Senaida Fernandez or Gbenga Ogedegbe.

Appendices

Appendix

MASES-R

Situations come up that make it difficult for people to take their medications as prescribed by their doctors. Below is a list of such situations. We want to know your opinion about taking your blood pressure medication(s) under each of them. Please indicate your response by checking the box that most closely represents your opinion. There are no right or wrong answers.

For each of the situations listed below, please rate how sure you are that you can take your blood pressure medications all of the time.

Items

Not at all sure

A little sure

Fairly sure

Extremely sure

How confident are you that you can take your blood pressure medications:

1. When you are busy at home

    

2. When there is no one to remind you

    

3. When you worry about taking them for the rest of your life

    

4. When you do not have any symptoms

    

5. When you are with family members

    

6. When you are in a public place

    

7. When the time to take them is between your meals

    

8. When you are travelling

    

9. When you take them more than once a day

    

10. When you have other medications to take

    

11. When you feel well

    

12. If they make you want to urinate while away from home

    

Please rate how sure you are that you can carry out the following task:

13. Make taking your medications part of your routine

    

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Fernandez, S., Chaplin, W., Schoenthaler, A.M. et al. Revision and validation of the medication adherence self-efficacy scale (MASES) in hypertensive African Americans. J Behav Med 31, 453–462 (2008). https://doi.org/10.1007/s10865-008-9170-7

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