Table 4.
Comparison of Emergency Department Claims Cost Differences: Matched Control and Test Groups for Identified Emergency Department Visits after Propensity Matching
| Procedure | Test group at 1st ED visit, N | Control group at 1st ED visit, N | Test group at 2nd & subsequent ED visits, N | Control group at 2nd & subsequent ED visits, N | Decrease in procedures in test group, N |
|---|---|---|---|---|---|
| Procedure counts | |||||
| Laboratory testing | 624 | 819 | 423 | 630 | 57 |
| Diagnostic radiology | 187 | 247 | 156 | 252 | 35 |
| IV therapy | 87 | 113 | 104 | 112 | -18 |
| CT scans | 63 | 50 | 50 | 60 | 26 |
| ECGs | 48 | 60 | 32 | 42 | 2 |
CT indicates computed tomography; ECGs, electrocardiograms; ED, emergency department; IV, intravenous.