Table 2.
Comparison of condition onset date (index date) in patients with different index dates identified by both eMERGE and PHOEBE concept set-based algorithms. CUIMC – Columbia University Irving Medical Center EHR, MDCR - IBM MarketScan® Medicare Supplemental Database, MDCD - IBM MarketScan® Multi-State Medicaid Database.
| MDCD | MCDR | CUMC | ||||
| Patients, n | Difference in days, median (IQR) | Patients, n | Difference in days, median (IQR) | Patients, n | Difference in days, median (IQR) | |
| Diabetes mellitus type I | 2,243 | 371 (139-795) | 2,807 | 407 (176 - 894) | 206 | 1,001 (206-1,915) |
| Diabetes mellitus type II | 253,728 | 77 (22-226) | 957 | 122 (13-417) | 11,536 | 189 (28-873) |
| ADHD | 165,590 | 201 (59-525) | 203 | 175 (61-318) | 1,801 | 146 (35-532) |
| Heart Failure | 16,941 | 49 (3-298) | 25,294 | 107 (6-472) | 2,242 | 78 (6-724) |