Table 2.
Characteristics of the Participants with Uncontrolled Blood Pressure Overall, and % with Low and Not Low Pharmacy Refill Adherence
| Characteristic | Overall (n=394)a | % with Low Pharmacy Refill Adherence Using MPR (n=92) | % with Not Low Pharmacy Refill Adherence Using MPR (n=302) |
|---|---|---|---|
|
| |||
| Age (yrs) | |||
| < 75 | 41.2 | 24.1 | 75.9 |
| ≥ 75 | 58.8 | 22.8 | 77.2 |
| Sex | |||
| Female | 66.0 | 25.0 | 75.0 |
| Male | 34.0 | 20.1 | 79.9 |
| Race-ethnicity | |||
| Black | 33.0 | 32.3 | 67.7* |
| Nonblack | 67.0 | 18.9 | 81.1 |
| Education | |||
| < High school education | 23.1 | 28.6 | 71.4 |
| ≥ High school education | 76.9 | 21.8 | 78.2 |
| Marital Status | |||
| Married | 48.0 | 22.2 | 77.8 |
| Not married | 52.0 | 24.4 | 75.6 |
| Hypertension duration at baseline (yrs) | |||
| <10 | 35.5 | 20.7 | 79.3 |
| ≥ 10 | 64.5 | 24.8 | 75.2 |
| Charlson Comorbidity Index score | |||
| < 2 | 43.2 | 17.1 | 82.9 |
| ≥ 2 | 56.9 | 28.1 | 71.9* |
| Body mass index (kg/m2)b | |||
| < 30 | 63.9 | 23.3 | 76.7 |
| ≥ 30 | 36.2 | 24.1 | 75.9 |
| No. of antihypertensive drug classes | |||
| < 3 | 54.3 | 20.6 | 79.4 |
| ≥ 3 | 45.7 | 26.7 | 73.3 |
|
| |||
| Select Candidate Itemsc | |||
|
| |||
| How often do you forget to take your high BP medicine? 9 | |||
| None | 79.4 | 17.9 | 82.1** |
| Some, most, or all of the time | 20.6 | 44.4 | 55.6 |
| How often do you miss taking your high BP pills when you feel better? 9 | |||
| None | 95.4 | 21.3 | 78.7** |
| Some, most, or all of the time | 4.6 | 66.7 | 33.3 |
| How sure are you that you can take your blood pressure medication all of the time when you worry about taking them for the rest of your life? 26 | |||
| Very sure or not applicable | 92.9 | 21.6 | 78.4** |
| Somewhat/not at all sure | 7.1 | 46.4 | 53.6 |
| Does your health now limit you in moderate activities, such as moving a table, pushing a vacuum cleaner, bowling, or playing golf? 23 | |||
| Not limit you at all | 51.0 | 18.9 | 81.1* |
| Limit you a little | 31.5 | 24.2 | 75.8 |
| Limit you a lot | 17.5 | 34.8 | 65.2 |
Data are percentages of participants. Low pharmacy refill adherence = medication possession ratio (MPR) <0.80; not low pharmacy refill adherence = MPR ≥0.80.
P<0.05,
P<0.01.
To be eligible for inclusion in the derivation sample, participants must have completed the first follow-up of the Cohort Study of Medication Adherence among Older Adults (CoSMO) survey and had uncontrolled blood pressure (mean systolic blood pressure or diastolic blood pressure ≥140/90) in the year prior to the follow-up survey and had no missing data on all MMAS-8 and Hill-Bone Compliance Scale questions.
Due to missing data on 4 patients, 390 had data to calculate BMI
A full list of candidate items is included in Appendix 1.