Characteristics of 218 patients with RA by adherence to injectable biologic therapy.
| Characteristics | Total, n = 218 | Nonadherent, n = 45 | Adherent, n = 173 | p |
|---|---|---|---|---|
| Age, yrs | 58 ± 12 | 58 ± 12 | 56 ± 12 | 0.84 |
| Female | 196 (90) | 43 (96) | 153 (88) | 0.26 |
| Low income | 27 (12) | 2 (4) | 25 (15) | 0.08 |
| Non-white | 91 (42) | 21 (47) | 70 (40) | 0.5 |
| High school or less | 65 (30) | 11 (24) | 54 (31) | 0.47 |
| Spanish-speaking | 39 (18) | 6 (13) | 33 (19) | 0.51 |
| Limited health literacy | 55 (25) | 11 (24) | 44 (25) | 1 |
| Disease duration, yrs | 22 ± 12 | 23 ± 12 | 22 ± 13 | 0.55 |
| DMARD use | 168 (77) | 37 (82) | 131 (76) | 0.43 |
| PHQ score | 5.2 ± 4.8 | 6.2 ± 5.2 | 4.9 ± 4.7 | 0.13 |
| Self-efficacy score (range 1–10) | 6.9 ± 2.0 | 6.6 ± 1.6 | 6.9 ± 2.1 | 0.36 |
| High self-efficacy (score ≥ 7) | 119 (55) | 20 (44) | 99 (58) | 0.13 |
| “Considering all the ways that your arthritis affects you, rate how well you are doing.” (0–100) | 64 ± 28 | 64 ± 28 | 65 ± 29 | 0.9 |
| Pain, 0–100 | 34 ± 30 | 28 ± 23 | 36 ± 31 | 0.14 |
| HAQ, 0–3 | 1.1 ± 0.7 | 1.1 ± 0.7 | 1.2 ± 0.8 | 0.68 |
Values are mean ± SD or n (%). RA: rheumatoid arthritis; DMARD: disease-modifying antirheumatic drugs; PHQ: Patient Health Questionnaire; HAQ: Health Assessment Questionnaire.