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Table 6 Spearman rank correlation among the ABQ (and subscales), the AMRS score and the TTR for the subgroup of patients without a high probability of social desirability bias

From: Validation of the Adherence Barriers Questionnaire – an instrument for identifying potential risk factors associated with medication-related non-adherence

  Modified adherence to refills and medications scale (ARMS) Time in therapeutic range (TTR)
N = 298+ N = 275÷
ABQ 0.468* - 0.189**
Subscale 1 (intentional barriers) 0.435* - 0.197**
Subscale 2 (medication-/health care system-related barriers) 0.373* - 0.174**
Subscale 3 (unintentional barriers) 0.332* - 0.101***
  1. +Subgroup of patients with a social desirability score < 5 and with complete ABQ as well as modified ARMS data.
  2. ÷Subgroup of patients with a social desirability score < 5 and with complete ABQ, who received vitamin K antagonist and had at least 2 INR values available.
  3. *p < 0.001 (2-tailed).
  4. **p < 0.005 (2-tailed).
  5. ***p = 0.094 (2-tailed).
  6. ABQ: Adherence Barriers Questionnaire, ARMS: Adherence to Refills and Medications scale, TTR: Time in Therapeutic Range, INR: International Normalized Ratio.