Characteristics of 362 patients with RA by adherence to oral DMARD or prednisone.
| Characteristics | Total, n = 362 | Nonadherent, n = 50 | Adherent, n = 312 | p |
|---|---|---|---|---|
| Age, yrs | 61 ± 13 | 55 ± 15 | 62 ± 12 | < 0.001 |
| Female | 319 (88) | 46 (92) | 273 (88) | 0.48 |
| Non-white | 141 (39) | 24 (48) | 117 (38) | 0.16 |
| High school or less | 120 (33) | 20 (40) | 100 (32) | 0.33 |
| Spanish-speaking | 73 (20) | 18 (36) | 55 (18) | 0.004 |
| Limited health literacy | 117 (32) | 19 (38) | 98 (31) | 0.42 |
| Disease duration, yrs | 23 ± 12 | 21 ± 13 | 24 ± 12 | 0.11 |
| Biologic use | 176 (49) | 23 (46) | 153 (49) | 0.76 |
| PHQ score | 5.3 ± 5.0 | 6.7 ± 5.9 | 5.1 ± 4.8 | 0.04 |
| Function, HAQ | 1.2 ± 0.75 | 1.2 ± 0.84 | 1.2 ± 0.74 | 0.82 |
| Self-efficacy score, range 1–10 | 6.7 ± 2.0 | 7.0 ± 2.2 | 6.7 ± 1.9 | 0.28 |
| High self-efficacy (score ≥ 7) | 189 (52) | 31 (62) | 158 (51) | 0.17 |
| “Considering all the ways that your arthritis affects you, rate how well you are doing.” (0–100) | 65 ± 27 | 65 ± 28 | 65 ± 26 | 0.85 |
Values are mean ± SD or n (%). Values in bold face are statistically significant. RA: rheumatoid arthritis; DMARD: disease-modifying antirheumatic drugs; PHQ: Patient Health Questionnaire; HAQ: Health Assessment Questionnaire.