Table 2 Concordance in diagnoses for Medicare and work-life claims (Sample 2)
From: Linking individual medicare health claims data with work-life claims and other administrative data
Hypertension | Diabetes | Heart Disease | Arthritis | Asthma | Depression | |
|---|---|---|---|---|---|---|
Dxs Prior to Age 65 | 44 % | 19 % | 18 % | 26 % | 9 % | 3 % |
Using 2 ICD-9 Diagnosis Codes | ||||||
Prior Dxs Confirmed at 65 | 68 % | 78 % | 57 % | 29 % | 39 % | 11 % |
Prior Dxs Confirmed by 66 | 81 % | 88 % | 68 % | 41 % | 45 % | 20 % |
New Dxs Seen at 65–66 | 22 % | 10 % | 8 % | 14 % | 6 % | 3 % |
Kappa age 64 and 65–66 | 0.57 | 0.36 | 0.65 | 0.32 | 0.18 | 0.21 |
Kappa rating | Moderate | Fair | Substantial | Fair | Slight | Fair |
Using all ICD-9 Diagnosis Codes | ||||||
Prior Dxs Confirmed at 65 | 80 % | 89 % | 67 % | 38 % | 47 % | 20 % |
Prior Dxs Confirmed by 66 | 89 % | 94 % | 78 % | 52 % | 58 % | 34 % |
New Dxs Seen at 65–66 | 27 % | 11 % | 10 % | 20 % | 9 % | 5 % |
Kappa age 64 and 65–66 | 0.52 | 0.35 | 0.61 | 0.35 | 0.15 | 0.21 |
Kappa rating | 80 % | 89 % | 67 % | 38 % | 47 % | 20 % |