Table 3.
Correlations between continuous baseline variables and adherence throughout the 2-year follow-up
| DMARD % prescribed doses accurately taken (n=107) |
Prednisone % prescribed doses accurately taken (n=56) |
|||||
|---|---|---|---|---|---|---|
| Baseline variables | n | r* | P | n | r* | p |
| Age | 107 | −0.07 | >0.20 | 56 | 0.04 | >0.20 |
| Disease duration | 107 | 0.08 | >0.20 | 56 | −0.06 | >0.20 |
| MHAQ | 107 | −0.20 | 0.04 | 56 | −0.03 | >0.20 |
| DAS28 | 90 | −0.27 | 0.01 | 49 | 0.10 | >0.20 |
| Sharp/van Der Heijde score | 79 | −0.06 | >0.20 | 45 | −0.04 | >0.20 |
| CESD10 | 107 | −0.19 | 0.05 | 56 | −0.19 | 0.17 |
| MOS | 107 | 0.17 | 0.08 | 56 | 0.24 | 0.07 |
| SF-12-PCS | 105 | 0.07 | >0.20 | 55 | −0.30 | <0.03 |
| SF-12-MCS | 105 | 0.34 | 0.0004 | 55 | 0.24 | 0.08 |
| Comorbidities | 107 | −0.06 | >0.20 | 56 | −0.02 | >0.20 |
| Number of RA-related drugs 1 | 107 | 0.05 | >0.20 | 56 | 0.09 | >0.20 |
| Pills per day of RA-related drugs 1 | 107 | 0.08 | >0.20 | 56 | 0.32 | 0.02 |
| Number of non-RA related drugs | 107 | −0.17 | 0.07 | 56 | 0.05 | >0.20 |
| Pills per day of non-RA-related drugs | 107 | −0.15 | 0.12 | 56 | 0.14 | >0.20 |
*
Pearson correlation coefficients.
1
Includes disease-modifying antirheumatic drugs, prednisone, non-steroidal anti-inflammatory drugs and/or analgesics.
DMARD = disease-modifying antirheumatic drug; MHAQ = Modified Health Assessment Questionnaire; DAS28 = disease activity score 28-joint index; CESD10 = Center for Epidemiologic Studies Depression score; MOS = Medical Outcome Study; SF-12-PCS = Physical health score on the SF12; SF-12-MCS = mental health score on the SF12; NSAIDs=non-steroidal anti-inflammatory drugs.