Table 1.
2020 Monthly ED visit counts and IRRs in the Clinical Emergency Department Registry.
| Measure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov (Through Nov 15th) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total visits | |||||||||||
| Visits | 553,078 | 506,075 | 441,460 | 280,609 | 341,509 | 381,777 | 436,761 | 421,469 | 409,321 | 420,955 | 188,179 |
| IRR (95% CI) | 1.06 (1.06–1.06) | 0.97 (0.97–0.97) | 0.84 (0.84–0.85) | 0.54 (0.53–0.54) | 0.65 (0.65–0.66) | 0.73 (0.73–0.73) | 0.84 (0.83–0.84) | 0.81 (0.8–0.81) | 0.78 (0.78–0.79) | 0.81 (0.8–0.81) | 0.77 (0.76–0.78) |
| MI | |||||||||||
| Visits | 2,834 | 2,680 | 2,300 | 1,939 | 2,280 | 2,256 | 2,262 | 2,513 | 2,468 | 2,625 | 1,190 |
| IRR (95% CI) | 1 (0.97–1.04) | 0.95 (0.91–0.99) | 0.81 (0.78–0.85) | 0.69 (0.66–0.72) | 0.81 (0.77–0.84) | 0.8 (0.77–0.83) | 0.8 (0.77–0.84) | 0.89 (0.85–0.93) | 0.87 (0.84–0.91) | 0.93 (0.89–0.97) | 0.9 (0.87–0.94) |
| Percentage | 0.51 | 0.53 | 0.52 | 0.69 | 0.67 | 0.59 | 0.52 | 0.60 | 0.60 | 0.62 | 0.63 |
| CVA | |||||||||||
| Visits | 2,158 | 2,088 | 1,909 | 1,678 | 1,818 | 1,903 | 1,982 | 1,995 | 1,933 | 2,005 | 937 |
| IRR (95% CI) | 0.98 (0.93–1.02) | 0.94 (0.9–0.99) | 0.86 (0.82–0.9) | 0.76 (0.72–0.8) | 0.82 (0.78–0.86) | 0.86 (0.82–0.9) | 0.9 (0.86–0.94) | 0.9 (0.86–0.94) | 0.87 (0.83–0.91) | 0.91 (0.87–0.95) | 0.91 (0.87–0.95) |
| Percentage | 0.39 | 0.41 | 0.43 | 0.60 | 0.53 | 0.50 | 0.45 | 0.47 | 0.47 | 0.48 | 0.50 |
| Arrest | |||||||||||
| Visits | 1,015 | 1,040 | 1,083 | 985 | 881 | 915 | 993 | 938 | 858 | 911 | 377 |
| IRR (95% CI) | 1.01 (0.94–1.07) | 1.03 (0.97–1.1) | 1.07 (1.01–1.14) | 0.98 (0.92–1.04) | 0.87 (0.82–0.94) | 0.91 (0.85–0.97) | 0.99 (0.92–1.05) | 0.93 (0.87–0.99) | 0.85 (0.79–0.91) | 0.9 (0.85–0.97) | 0.88 (0.85–0.92) |
| Percentage | 0.18 | 0.21 | 0.25 | 0.35 | 0.26 | 0.24 | 0.23 | 0.22 | 0.21 | 0.22 | 0.20 |
| VTE | |||||||||||
| Visits | 3,075 | 2,786 | 2,311 | 1,955 | 2,395 | 2,487 | 2,652 | 2,792 | 2,712 | 2,883 | 1,247 |
| IRR (95% CI) | 1.02 (0.98–1.05) | 0.92 (0.89–0.96) | 0.76 (0.73–0.8) | 0.65 (0.62–0.68) | 0.79 (0.76–0.82) | 0.82 (0.79–0.86) | 0.88 (0.84–0.91) | 0.92 (0.89–0.96) | 0.9 (0.86–0.93) | 0.95 (0.92–0.99) | 0.8 (0.75–0.86) |
| Percentage | 0.56 | 0.55 | 0.52 | 0.70 | 0.70 | 0.65 | 0.61 | 0.66 | 0.66 | 0.68 | 0.66 |
MI, Myocardial infarction; CVA, cerebrovascular accident; VTE, venous thromboembolism.
Data are drawn from the Clinical Emergency Department Registry, a sample of 164 EDs across 35 states. Total visit counts, together with IRRs (generated by Poisson regression with 2019 as reference category), and percentages (select emergency condition count divided by overall visit count) are reported by month. Conditions were identified by diagnosis codes with Clinical Classification Software Revised. The cardiac arrest category includes ventricular fibrillation.