Table 2.
Comorbidity parameter | No. (%) |
---|---|
Total number in cohort | 12,562 (100.0) |
Comorbidities (at least 1) | 11,648 (92.7) |
Number of comorbiditiesa | |
0 | 716 (5.7) |
1 | 1395 (11.1) |
2 | 1976 (15.7) |
3 | 2242 (17.9) |
4 | 2068 (16.5) |
≥ 5 | 3967 (31.6) |
Specific conditionsb | |
AIDS | 25 (0.2) |
Alcohol abuse | 498 (4.0) |
Chronic blood loss anemia | 485 (3.9) |
Chronic pulmonary disease | 2685 (21.4) |
Coagulopathy | 961 (7.7) |
Congestive heart failure | 1943 (15.5) |
Deficiency anemias | 3696 (29.4) |
Depression | 1063 (8.5) |
Drug abuse | 114 (0.9) |
Fluid and electrolyte disorders | 2769 (22.0) |
Hypertension | 8887 (70.8) |
Hypothyroidism | 2462 (19.6) |
Liver disease | 331 (2.6) |
Lymphoma | 165 (1.3) |
Metastatic cancer | 461 (3.7) |
Other neurologic disorders | 2201 (17.5) |
Paralysis | 629 (5.0) |
Peptic ulcer disease, bleeding | 7 (0.1) |
Peripheral vascular disease | 2515 (20.0) |
Psychoses | 1513 (12.0) |
Pulmonary circulation disease | 593 (4.7) |
Renal failure | 3162 (25.2) |
Rheumatoid arthritis/collagen vascular disease | 529 (4.2) |
Solid tumor without metastasis | 381 (3.0) |
Valvular disease | 1381 (11.0) |
Weight loss | 1598 (12.7) |
Missing data in 1.6% (n = 198).
Elixhauser comorbidity measures. Diabetes and obesity are omitted from this list because they are obtained from different sources. Diabetes data are obtained from regional diabetic registries, and obesity data are obtained from body mass index measurements. Both comorbidities are included in Table 1.
AIDS = acquired immunodeficiency syndrome.