Table 1 |
||
|
Characteristics of patients and controls hospitalized for dermatomyositis (1993 to 2007) |
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|
Characteristics |
Patients with dermatomyositis |
Controlsa |
|
|
||
|
Total number in sample |
10,156 |
76,440 |
|
Weighted number (to US population) |
50,323 |
376,744 |
|
Mean age, years |
58.3 |
58.5 |
|
Percentage of females |
73.2 |
73.4 |
|
Race, percentage |
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|
White |
53.2 |
71.4 |
|
Black |
11.8 |
15.5 |
|
Hispanic |
7.6 |
10.1 |
|
Other |
3.7 |
3.0 |
|
Missing |
23.6 |
0 |
|
Income, percentage |
||
|
1 (lowest category) |
19.7 |
28.2 |
|
2 |
22.4 |
23.8 |
|
3 |
23.7 |
22.3 |
|
4 (highest category) |
31.3 |
22.8 |
|
Missing |
2.9 |
2.9 |
|
Hospital type |
||
|
Rural |
11.6 |
11.5 |
|
Urban, non-teaching |
39.3 |
43.5 |
|
Urban, teaching |
49.1 |
45.0 |
|
Mean length of hospitalization, days |
8.0 |
5.1 |
|
Mean total charges, US dollars |
28,545 |
33,853 |
|
Any cardiovascular diagnosis, percentage |
20.4 |
21.1 |
|
MI or acute coronary artery disease |
4.4 |
5.7 |
|
Angina |
1.2 |
1.7 |
|
Angina pectoris |
1.2 |
1.3 |
|
Angina (either) |
2.5 |
2.8 |
|
Congestive heart failure |
11.8 |
9.9 |
|
Coronary artery bypass graft |
0.4 |
0.01 |
|
Coronary catheterization |
2.9 |
0 |
|
Percutaneous transluminal coronary angioplasty |
0.8 |
0 |
|
Charlson comorbidity index |
1.4 |
1.2 |
|
Overall in-hospital death rate per 1,000 |
56.5 |
24.0 |
|
|
||
|
aControls were matched for age and gender. MI, myocardial infarction. |
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|
Linos et al. Arthritis Research & Therapy 2013 15:R7 doi:10.1186/ar4135 |
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