HIV Visual Analogue Scale (HIV-VAS)

The VAS for medication adherence is a 4-item measure that was developed by the COPA 1 study team (R34MH097609) as an adjunct self-report measure of medication adherence. The VAS asks individuals to mark a line at the point along a continuum showing how much of each drug they have taken in the last 4 weeks.

For the online version in English and Spanish (.zip files), the original instructions remain so as not to alter the original translation. The original instructions require marking with a pencil, so the participant must instead use the computer cursor (mouse) to slide the bar and select the level of medication adherence.

Measure Source Article:

 

Related Article(s):

  1. Finitsis, D., Pellowski, J., Huedo-Medina, J., Fox, A., & Kalichman, T. (2016). Visual analogue scale (VAS) measurement of antiretroviral adherence in people living with HIV (PLWH): A meta-analysis. Journal of Behavioral Medicine, 39(6), 1043-1055.

  2. Kalichman, S. C., Amaral, C. M., Swetzes, C., Jones, M., Macy, R., Kalichman, M. O., & Cherry, C. (2009). A simple single-item rating scale to measure medication adherence: further evidence for convergent validity. Journal of the International Association of Physicians in AIDS Care, 8(6), 367–374. doi:10.1177/1545109709352884

Translation Information:

All measures had either been previously translated into Spanish and were subsequently reviewed by the study team COPA 1 (R34MH097609) and COPA 2 (R01MH110242) for local accuracy of meaning or were translated and back translated by the study team. Translated study materials, including all assessment and intervention materials, were pilot tested with local focus groups of stakeholders, patients and providers. 

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