Table 5.
Comparison of Kappa Values across Studies
| Kappa Values |
|||
|---|---|---|---|
| Condition | This Study | Quan Studya | Kieszak Studyb |
| Myocardial infarction | 0.34 | 0.59 | 0.22 |
| Congestive heart failure | 0.61 | 0.80 | 0.38 |
| Peripheral vascular disease | 0.42 | 0.34 | 0.22 |
| Cerebrovascular disease | 0.83 | 0.50 | – |
| Dementia | 0.66 | 0.42 | 0.26 |
| Chronic pulmonary disease | 0.78 | 0.72 | 0.64 |
| Hemiplegia/paraplegia | 0.22 | 0.55 | – |
| Rheumatologic disease | 0.58 | 0.57 | 0.20 |
| Peptic ulcer disease | 0.62 | 0.63 | 0.12 |
| Diabetes | 0.75 | 0.74 | 0.68 |
| Diabetes with chronic complication | 0.34 | 0.58 | 0.16 |
| Mild liver disease | 0.09 | 0.53 | – |
| Moderate liver disease | 0.43 | 0.47 | – |
| Renal disease | 0.75 | 0.49 | 0.29 |
| Any malignancy | 0.77 | 0.78 | 0.23 |
| Metastatic solid tumor | 0.87 | 0.87 | 0.20 |
| AIDS/HIV | 0.91 | 0.78 | — |
Notes: Kappa categories: ≤0.2 (poor agreement); 0.21–0.40 (fair agreement); 0.41–0.60 (moderate agreement); 0.61–0.80 (substantial agreement); 0.81–1.00 (excellent agreement). Boldface values indicate kappa category higher than other studies.
a
Quan, H., G. A. Parsons, and W. A. Ghali. “Validity of Information on Comorbidity Derived from ICD-9-CM Administrative Data.” Medical Care 40 (2002): 675–85.
b
Kieszak, S. M., W. D. Flanders, A. S. Kosinski, C. C. Shipp, and H. Karp. “A Comparison of the Charlson Comorbidity Index Derived from Medical Record Data and Administrative Billing Data.” Journal of Clinical Epidemiology 52 (1999): 137–42; dash indicates conditions not studied.