Table 2.
Association between categorical baseline variables and adherence during the 2-year follow-up
| All patients (n=lll) |
DMARDs: % doses taken as prescribed (107 patients) |
Prednisone: % doses taken as prescribed (56 patients) |
||||||
|---|---|---|---|---|---|---|---|---|
| Baseline variables | n (%) | n | Mean % (SD) | P* | n | Mean % (SD) | p* | |
| Education | < High school | 50 (45%) | 47 | 67 (19) | 0.20 | 29 | 69 (22) | >0.20 |
| ≥High school | 61 (55%) | 60 | 62 (20) | 27 | 71 (17) | |||
|
| ||||||||
|
Marital
status |
Widowed/separated | 42 (38%) | 41 | 56 (19) | <0.01¥ | 15 | 62 (19) | >0.20 |
| Single never married | 13 (12%) | 13 | 72 (16) | 10 | 74 (18) | |||
| Married or significant other |
56 (50%) | 53 | 69 (18) | 31 | 72(20) | |||
|
| ||||||||
| Ethnicity | Hispanic | 71 (64%) | 67 | 66 (17) | >0.20 | 42 | 70 (21) | >0.20 |
| White | 18 (16%) | 18 | 64 (20) | 5 | 75 (13) | |||
| African American | 21 (19%) | 21 | 60 (24) | 8 | 69 (20) | |||
| Other | 1 (1%) | 1 | 52 (NA) | 1 | 65 (NA) | |||
|
| ||||||||
| Insurance * | Uninsured | 23 (21%) | 22 | 65 (23) | >0.20 | 14 | 72 (19) | >0.20 |
| Private insurance | 3 (3%) | 3 | 66 (13) | 1 | 85 (NA) | |||
| Medicaid/Medicare | 81 (76%) | 78 | 64 (19) | 40 | 69 (20) | |||
|
| ||||||||
|
Employment
status £ |
Employed | 19 (18%) | 19 | 64 (15) | >0.20 | 9 | 57 (21) | 0.10 |
| Homemaker | 38 (35%) | 35 | 68 (17) | 26 | 70 (22) | |||
| Unemployed | 8 (7%) | 8 | 63 (14) | 6 | 78 (7) | |||
| Disabled/retired | 40 (37%) | 39 | 61 (23) | 13 | 77 (12) | |||
| Other | 3 (3%) | 3 | 77 (22) | 1 | 46 (NA) | |||
|
| ||||||||
| Income § | < $20,000/year | 74 (67%) | 70 | 62 (19) | >0.20 | 36 | 72 (17) | 0.11 |
| > $20,000/year | 20 (18%) | 20 | 69 (20) | 8 | 60 (27) | |||
|
| ||||||||
|
Household
members |
Living alone | 17 (15%) | 17 | 56 (21) | 0.05 | 7 | 70 (15) | >0.20 |
| Not living alone | 94 (85%) | 90 | 66 (19) | 49 | 70 (20) | |||
|
| ||||||||
| Language | English or English/Spanish |
66 (59%) | 65 | 64 (21) | >0.20 | 26 | 71 (18) | >0.20 |
| Spanish only | 45 (41%) | 42 | 65 (16) | 30 | 69 (21) | |||
|
| ||||||||
| Biologic agent used | No | 64 (58%) | 63 | 63 (21) | >0.20 | 35 | 73 (20) | 0.19 |
| Yes | 47 (42%) | 44 | 66 (17) | 21 | 65 (19) | |||
DMARD = disease-modifying anti-rheumatic drug; SD = standard deviation.
*
ANOVA and Student t test were used.
¥
Widowed or separated patients had significantly less adherence than those married or living with significant other or single (never married).
*
Data missing for 4 patients.
£
Data missing for 3 patients.
§
Data missing for 17 patients.