TABLE 4.
Association Between Patient Outof-Pocket Expenses and Medication Adherence for Medications Under Study and All Medications Dispensed at Cohort Entry
| Adjusted Mean Difference in PDC (%) n = 1,345 | 95% CI | |
|---|---|---|
| Medications under study at cohort entry | ||
| Patient out-of-pocket expenses ($) | ||
| $0.00 | -9.0a | -15.0 to -3.0 |
| $0.01-$3.59 | Reference | |
| $3.60-$8.11 | -2.0a | -8.0 to 4.0 |
| $8.12-$14.40 | -10.0a | -16.0 to -4.0 |
| $14.41-$89.99 | -19.0a | -25.0 to -13.0 |
| All medications dispensed at cohort entry | ||
| Patient out-of-pocket expenses ($) | ||
| $0.00 | -9.0a | -15.0 to -2.0 |
| $0.01-$5.60 | Reference | |
| $5.61-$11.78 | -8.0a | -14.0 to -2.0 |
| $11.79-$21.02 | -8.0a | -14.0 to -2.0 |
| $21.03-$287.60 | -15.0a | -21.0 to -9.0 |
a Adjusted for age, sex, body mass index, smoking status, and the number of different medications filled in the year before cohort entry.
CI = confidence interval; PDC = proportion of days covered.