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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Am J Med. 2013 Dec;126(12):1089–1098. doi: 10.1016/j.amjmed.2013.09.002

Table 3a.

Achievement of low disease activity state by race and ethnicity

2005-2007 2010-2012

% 95% CI Pairwise P value Overall P value % 95% CI Pairwise P value Overall P value
Unadjusted Rates
All patients 53.3 (52.4-54.3) <0.001 63.7 (63-64.4) <0.001
    White 54.7 (53.7-55.8) 64.5 (63.8-65.3)
    Black 43.3 (39.2-47.3) <0.001 58.4 (55.7-61) <0.001
    Hispanic 41.2 (37.5-45) <0.001 56.1 (53-59.3) <0.001
    Asian 62.8 (55.8-69.9) 0.029 65.5 (60.2-70.8) 0.729
Adjusted Rates
Model 1 <0.001 <0.001
    White 53.4 (48.8-58) 63.2 (60-66.3)
    Black 44.6 (38.6-50.5) <0.001 58.0 (53.9-62.1) <0.001
    Hispanic 50.6 (44.7-56.4) 0.158 57.2 (52.8-61.7) <0.001
    Asian 64.1 (56.2-72) 0.003 62.8 (56.7-68.8) 0.882
Model 2 <0.001 0.026
    White 53.4 (48.7-58.1) 28.4 (25.8-30.9)
    Black 46.6 (40.5-52.8) 0.002 23.7 (20.4-26.9) 0.039
    Hispanic 52.4 (46.5-58.3) 0.636 24.4 (20.8-28) 0.015
    Asian 63.4 (55.5-71.4) 0.005 27.0 (21.7-32.3) 0.998
Model 3 <0.001 0.001
    White 54.2 (49.6-58.8) 62.2 (59.1-65.3)
    Black 46.1 (40.1-52.1) <0.001 57.7 (53.7-61.7) 0.001
    Hispanic 52.6 (46.8-58.4) 0.410 58.2 (53.9-62.5) 0.013
    Asian 64.2 (56.5-72) 0.004 61.2 (55.3-67.1) 0.690
Model 4 <0.001 <0.001
    White 53.2 (48.5-58) 62.6 (59.3-65.8)
    Black 45.1 (39.1-51.1) <0.001 57.6 (53.5-61.7) <0.001
    Hispanic 50.4 (44.6-56.3) 0.154 57.3 (52.9-61.7) 0.001
    Asian 63.8 (56-71.6) 0.002 61.6 (55.6-67.6) 0.710
Model 5 <0.001 0.068
    White 53.6 (49-58.2) 61.7 (58.5-64.8)
    Black 46.9 (41-52.9) 0.001 58.6 (54.6-62.6) 0.022
    Hispanic 52.6 (46.8-58.3) 0.606 59.2 (54.8-63.5) 0.110
    Asian 63.0 (55.3-70.8) 0.006 60.9 (55-66.8) 0.762

Note: Disease activity defined by the Clinical Disease Activity Index (CDAI);

Values are the mean with 95% confidence intervals.

Adjusted models included a series of five mixed model linear regression models including: practice setting (Model 1), patient demographic/ socioeconomic factors (Model 2); markers of rheumatoid arthritis severity (Model 3), current rheumatoid arthritis treatment (Model 4) and all significant factors (p<0.05) from Models 1 through 4 (Model 5)