Table 2.
2020 Monthly ED visit counts and IRRs, by region, in the Clinical Emergency Department Registry.
| Measure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov (Through Nov 15th) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Northeast | |||||||||||
| Count | 64,877 | 57,434 | 51,462 | 28,982 | 32,458 | 36,984 | 45,437 | 46,835 | 44,563 | 45,713 | 20,837 |
| 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) | 0.73 (0.72–0.74) |
| Select emergency conditions | |||||||||||
| Count | 976 | 889 | 790 | 703 | 685 | 692 | 841 | 838 | 826 | 841 | 400 |
| 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) | 0.92 (0.86–0.99) |
| Percentage | 1.50 | 1.55 | 1.54 | 2.43 | 2.11 | 1.87 | 1.85 | 1.79 | 1.85 | 1.84 | 1.92 |
| Midwest | |||||||||||
| Count | 89,880 | 80,445 | 71,122 | 42,484 | 52,735 | 61,142 | 71,987 | 72,093 | 69,156 | 69,024 | 30,417 |
| IRR (95% CI) | 1.06 (1.05–1.07) | 0.94 (0.93–0.95) | 0.84 (0.83–0.85) | 0.47 (0.47–0.48) | 0.53 (0.52–0.54) | 0.6 (0.6–0.61) | 0.74 (0.73–0.75) | 0.76 (0.76–0.77) | 0.75 (0.74–0.75) | 0.6 (0.59–0.61) | 0.78 (0.77–0.79) |
| Select emergency conditions | |||||||||||
| Count | 1,587 | 1,452 | 1,245 | 1,137 | 1,304 | 1,315 | 1,383 | 1,502 | 1,441 | 1,430 | 556 |
| IRR (95% CI) | 1.05 (0.99–1.12) | 0.96 (0.9–1.03) | 0.85 (0.79–0.92) | 0.76 (0.7–0.82) | 0.74 (0.68–0.8) | 0.75 (0.69–0.81) | 0.91 (0.85–0.97) | 0.9 (0.84–0.97) | 0.91 (0.85–0.97) | 0.75 (0.7–0.81) | 0.97 (0.91–1.02) |
| Percentage | 1.77 | 1.80 | 1.75 | 2.68 | 2.47 | 2.15 | 1.92 | 2.08 | 2.08 | 2.07 | 1.83 |
| Southwest | |||||||||||
| Count | 18,567 | 17,131 | 15,237 | 10,817 | 12,515 | 12,380 | 13,718 | 13,609 | 13,533 | 14,372 | 6,457 |
| IRR (95% CI) | 1.08 (1.07–1.08) | 0.96 (0.96–0.97) | 0.85 (0.85–0.86) | 0.51 (0.5–0.51) | 0.63 (0.63–0.64) | 0.73 (0.73–0.74) | 0.86 (0.86–0.87) | 0.86 (0.86–0.87) | 0.83 (0.82–0.83) | 0.58 (0.58–0.59) | 0.8 (0.79–0.81) |
| Select emergency conditions | |||||||||||
| Count | 313 | 318 | 257 | 220 | 311 | 291 | 305 | 330 | 301 | 369 | 162 |
| IRR(95% CI) | 1.29 (1.22–1.36) | 1.18 (1.12–1.24) | 1.01 (0.95–1.07) | 0.92 (0.87–0.98) | 1.06 (1–1.12) | 1.07 (1.01–1.13) | 1.12 (1.06–1.19) | 1.22 (1.16–1.28) | 1.16 (1.1–1.22) | 0.75 (0.7–0.8) | 1.04 (0.93–1.16) |
| Percentage | 1.69 | 1.86 | 1.69 | 2.03 | 2.49 | 2.35 | 2.22 | 2.42 | 2.22 | 2.57 | 2.51 |
| West Coast | |||||||||||
| Count | 108,640 | 98,462 | 81,120 | 55,778 | 66,503 | 73,058 | 80,733 | 77,767 | 76,343 | 77,446 | 33,681 |
| IRR (95% CI) | 1.07 (1.06–1.09) | 0.99 (0.98–1.01) | 0.88 (0.87–0.9) | 0.63 (0.61–0.64) | 0.72 (0.71–0.74) | 0.72 (0.7–0.73) | 0.79 (0.78–0.81) | 0.79 (0.77–0.8) | 0.83 (0.82–0.85) | 0.73 (0.72–0.74) | 0.72 (0.71–0.72) |
| Select emergency conditions | |||||||||||
| Count | 2,347 | 2,169 | 1,889 | 1,690 | 1,887 | 1,902 | 2,027 | 2,126 | 2,063 | 2,223 | 941 |
| IRR (95% CI) | 0.94 (0.84–1.05) | 0.95 (0.85–1.07) | 0.77 (0.68–0.87) | 0.66 (0.58–0.76) | 0.93 (0.83–1.05) | 0.87 (0.78–0.98) | 0.92 (0.81–1.03) | 0.99 (0.89–1.11) | 1.11 (1–1.23) | 0.92 (0.82–1.03) | 0.98 (0.93–1.02) |
| Percentage | 2.16 | 2.20 | 2.33 | 3.03 | 2.84 | 2.60 | 2.51 | 2.73 | 2.70 | 2.87 | 2.79 |
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 (summed select emergency condition count divided by overall visit count) are reported by month. Summed select emergency conditions were identified by diagnosis codes with Clinical Classification Software Revised, and included acute myocardial infarction, cerebrovascular accident, cardiac arrest/ventricular fibrillation, and venous thromboembolism.