Table 4 Correlation coefficient between each two adherence measures and between each adherence measure and the CAS at 6 and 12 months (Spearman correlation)
Timing of adherence evaluation | ||||||||
|---|---|---|---|---|---|---|---|---|
6 month | 12 month | |||||||
Adherence Tool | Pharmacy refill | Self-report | VAS | CAS | Pharmacy refill | Self-report | VAS | CAS |
Pharmacy refill | 1.00 | 0.42 | 0.52 | 0.62 | 1.00 | 0.36 | 0.66 | 0.72 |
Self-report | – | 1.00 | 0.53 | 0.77 | – | 1.00 | 0.49 | 0.71 |
VAS | – | – | 1.00 | 0.83 | – | – | 1.00 | 0.83 |