PMCCPMCCPMCC

Search tips
Search criteria 

Advanced

Logo of nihpaAbout Author manuscriptsSubmit a manuscriptHHS Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
 
From:
J Rheumatol. Author manuscript; available in PMC 2013 November 3.
Published in final edited form as:
J Rheumatol. 2013 February; 40(2): 10.3899/jrheum.120441.
Published online 2013 January 15. doi: 10.3899/jrheum.120441

Table 1

Baseline characteristics of Medicare beneficiaries with and without rheumatoid arthritis (RA) stratified by number of comorbid conditions in 2004 and 2008.

RA2004
# of comorbid conditions
in those without RA
RA2008
# of comorbid conditions
in those without RA

01–23+01–23+
unweighted n219118062756824184108756206760
Age, (%)
<558.27.1*8.47.68.310.5*8.87.6
55–656.92.2*4.79.99.92.6*5.610.5
65–7438.857.9*46.836.445.657.3*48.336.5
75–8436.525.3*31.034.427.923.0*27.632.4
85+9.77.4*9.111.68.36.6*9.613.1
Female gender (%)76.249.9*53.6*58.1*76.851.9*54.1*55.4*
Disabled (%)15.19.313.117.618.213.114.418.1
Income level (%)
<25,00062.351.4*54.863.748.446.747.755.8
25,000+37.748.6*45.236.351.653.352.344.2
Race/ethnicity (%)
Hispanic10.18.08.37.3*13.97.6*7.6*8.3
Black/non-Hispanic8.35.39.610.6*12.26.9*9.5*10.4
White75.783.878.879.4*72.182.9*79.9*77.8
Residence (%)
Rural26.522.821.925.026.123.822.824.4
Metropolitan73.577.278.175.073.976.277.275.6
Educational level (%)
>high school40.045.342.239.341.248.447.2*41.6*
High school35.129.831.629.339.931.631.0*30.8*
no high school25.024.926.131.518.820.021.8*27.6*
Prescription drug coverage (%)
None23.342.5*31.0*26.3*10.916.49.77.9
Partial19.421.4*25.7*28.0*4.65.94.54.7
Full private35.230.3*33.4*32.8*32.025.328.526.5
Full public22.15.7*9.9*12.9*52.452.357.360.9
Self-reported health status (%)
excellent/good57.693.9*83.1*60.846.893.9*84.2*61.7*
fair/poor42.46.1*16.9*39.253.26.1*15.8*38.3*
*P< 0.05 for comparisons between the RA and nonRA groups (0, 1–2 and 3+) for the study year of interest.