Table 3.
Correlational analysis of the Adelphi Adherence Questionnaire score with other patient- and physician-reported measures
| Score | Hypothesized correlation | Estimated correlation | Hypothesis met?* |
|---|---|---|---|
| ARMS total | ≥0.5 | 0.774 (S) | Yes |
| ARMS taking medication as prescribed | ≥0.3 | 0.798 (S) | Yes |
| ARMS refilling medications on schedule | ≥0.3 | 0.382 (S) | Yes |
| Physician-reported adherence | ≥0.3 | 0.448 (P) | Yes |
| Physician-reported compliance | ≥0.3 | −0.345 (P) | Yes |
| Physician-reported satisfaction | ≥0.3 | 0.180 (P) | No |
| Patient-reported satisfaction | ≥0.3 | −0.298 (P) | No |
| WOMAC pain | ≤0.3 | 0.207 (S) | Yes |
| WOMAC stiffness | ≤0.3 | 0.200 (S) | Yes |
| WOMAC physical functioning | ≤0.3 | −0.123 (S) | Yes |
| EQ-5D-3L mobility | ≤0.3 | 0.013 (P) | Yes |
| EQ-5D-3L self care | ≤0.3 | 0.267 (P) | Yes |
| EQ-5D-3L usual activities | ≤0.3 | 0.194 (P) | Yes |
| EQ-5D-3L pain | ≤0.3 | 0.160 (P) | Yes |
| EQ-5D-3L anxiety/depression | ≤0.3 | 0.185 (P) | Yes |
Abbreviations ARMS Adherence to Refills and Medication Scale, WOMAC Western Ontario and McMaster Universities Arthritis Index, S spearman’s rank, P polyserial
*Estimated correlation higher than the hypothesized threshold [69]