HIV Treatment Adherence Self-Efficacy Scale (HIV-ASES)
Measures an individual's confidence in carrying out important treatment-related behaviors and adhering to HIV treatment plans in the face of barriers.
Scale Development & Technical Details
Scale Overview
The HIV Treatment Adherence Self-Efficacy Scale (HIV-ASES) was developed by Mallory O. Johnson, Thomas B. Neilands, Stephen E. Dilworth, Stephen F. Morin, Robert H. Remien, & Margaret A. Chesney (2007). It is designed to measure HIV Treatment Adherence Self-Efficacy. The scale is intended for use with HIV-positive individuals.
Scale Structure
This instrument consists of 12 items organized into 2 factors/subscales: Integration, Perseverance.
| Factor / Subscale | Items | N |
|---|---|---|
| Integration | 1,2,3,4,5,6,7 | 7 |
| Perseverance | 8,9,10,11,12 | 5 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 0 = Cannot do at all, 1 = 1, 2 = 2, 3 = 3, 4 = 4, 5 = Moderately certain can do, 6 = 6, 7 = 7, 8 = 8, 9 = 9, 10 = Completely certain can do.
Scoring
Item scores are averaged to produce a mean score.
Total scores range from 0 to 10. Interpretation guidelines:
- Low Self-Efficacy: 0 – 5
- Moderate Self-Efficacy: 6 – 8
- High Self-Efficacy: 9 – 10
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of Alpha coefficients range from 0.90 to 0.93.
Administration
The scale is self-administered and typically takes approximately 5 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.