| 1993-1995 | 1996-1998 | 1999-2001 | 2002-2005 | P-value |
---|---|---|---|---|---|
Deyo-Charlson comorbidities | |||||
 Myocardial Infarction | 4.0 | 4.2 | 4.1 | 4.7 | 0.76 |
 Congestive Heart Failure | 2.5 | 2.8 | 3.5 | 4.1 | 0.05 |
 Peripheral Vascular Disease | 4.7 | 3.8 | 4.2 | 5.6 | 0.07 |
 Cerebrovascular disease | 5.5 | 5.2 | 6.3 | 7.9 | 0.006 |
 Dementia | 0 | 0 | 0.3 | 0.4 | 0.02 |
 COPD | 9.7 | 8.8 | 10.2 | 9.7 | 0.66 |
 Peptic ulcer disease | 5.5 | 6.3 | 6.2 | 6.3 | 0.81 |
 Mild liver disease | 1.4 | 0.6 | 1.1 | 1.2 | 0.20 |
 Diabetes | 4.8 | 5.0 | 5.9 | 8.0 | <0.001 |
 Diabetes with end organ damage | 0.9 | 0.7 | 1.8 | 2.0 | 0.005 |
 Hemiplegia | 0.3 | 0.2 | 0.2 | 0.5 | 0.48 |
 Moderate/severe renal disease | 2.6 | 3.2 | 5.4 | 5.9 | <0.001 |
 Moderate/severe liver disease | 0.5 | 0.3 | 0.2 | 0.3 | 0.58 |
 Metastatic solid tumor | 3.3 | 2.3 | 3.6 | 2.7 | 0.12 |
 AIDS | 0 | 0.1 | 0 | 0 | 0.32 |
 Rheumatologic disease | 6.1 | 5.2 | 5.4 | 5.2 | 0.67 |
 Other cancer | 11.2 | 10.9 | 13.5 | 13.9 | 0.02 |
Mean Deyo-Charlson score (SD) | 0.9 (1.8) | 0.9 (1.7) | 1.1 (2.0) | 1.1 (2.0) | <0.001 |