Table 3.
Comparison of years 2020 and 2019 mean weekly imaging volumes and 95% CIs for the post-COVID-19 (weeks 10-16) period according to imaging modality types stratified by patient service locations
| 2020 Year |
2019 Year |
P value | |||
|---|---|---|---|---|---|
| Imaging Volumes | Mean | 95% CI | Mean | 95% CI | |
| Emergency department | |||||
| CT | 3,866.9 | 2,668.3-5,065.4 | 5,961.1 | 5,823.7-6,098.6 | .005∗ |
| Interventional | 8.7 | 5.1-12.3 | 11.9 | 7.1-16.6 | .219 |
| MRI | 70.0 | 34.8-105.2 | 165.9 | 149.7-182.0 | <.001∗ |
| Nuclear medicine | 11.9 | 2.0-21.7 | 24.9 | 20.2-29.6 | .018∗ |
| Ultrasound | 834.0 | 425.2-1,242.8 | 1,772.6 | 1,743.8-1,801.4 | .001∗ |
| X-ray | 7,005.9 | 6,097.5-7,914.3 | 8,146.4 | 7,980.0-8,312.9 | .022∗ |
| Total | 11,797.3 | 9,498.2-14,096.3 | 16,082.7 | 15,867.8-16,297.7 | .004∗ |
| Inpatient | |||||
| CT | 1,502.1 | 1,139.2-1,865.1 | 2,070.7 | 1,992.1-2,149.3 | .008∗ |
| Interventional | 307.7 | 211.3-404.1 | 503.0 | 486.5-519.5 | .002∗ |
| MRI | 402.4 | 186.5-618.3 | 792.7 | 753.5-831.9 | .004∗ |
| Nuclear medicine | 75.7 | 29.2-122.3 | 191.9 | 173.1-210.6 | <.001∗ |
| Ultrasound | 1,002.6 | 692.5-1,312.6 | 1,490.0 | 1,439.3-1,540.7 | .008∗ |
| X-ray | 6,447.7 | 5,459.5-7,436.0 | 6,223.4 | 5,988.4-6,458.5 | .599 |
| Total | 9,738.3 | 87,49.2-10,727.4 | 11,271.7 | 10,952.6-11,590.9 | .008∗ |
| Outpatient | |||||
| CT | 321.0 | 66.8-575.2 | 712.4 | 692.9-732.0 | .009∗ |
| Interventional | 162.4 | 86.8-238.0 | 280.7 | 260.9-300.5 | .008∗ |
| Mammography | 382.1 | 4.5-759.8 | 919.0 | 829.6-1,008.4 | .013∗ |
| MRI | 318.6 | 79.6-557.6 | 660.6 | 644.6-676.6 | .013∗ |
| Nuclear medicine | 154.9 | 39.4-270.3 | 303.0 | 284.9-321.1 | .020∗ |
| Ultrasound | 581.4 | 107.4-1,055.5 | 1,288.9 | 1,240.1-1,337.6 | .011∗ |
| X-ray | 926.7 | 107.6-1,745.9 | 2,393.6 | 2,321.6-2,465.5 | .005∗ |
| Total | 2,847.1 | 504.3-5,190.0 | 6,558.1 | 6,403.9-6,712.4 | .008∗ |
| All patient service locations | |||||
| CT | 5,690.0 | 3,909.6-7,470.4 | 8,744.3 | 8,557.2-8,931.4 | .006∗ |
| Interventional | 478.9 | 307.7-650.0 | 795.6 | 783.3-807.9 | .004∗ |
| Ultrasound | 2,418.0 | 1,242.3-3,593.7 | 4,551.4 | 4,477.5-4,625.4 | .004∗ |
| MRI | 791.0 | 306.9-1,275.1 | 1,619.1 | 1,569.2-1,669.1 | .006∗ |
| Nuclear medicine | 242.4 | 72.7-412.2 | 519.7 | 498.4-541.1 | .007∗ |
| X-ray | 14,380.3 | 13,193.6-15,567.0 | 16,763.4 | 16,431.2-17,095.7 | .002∗ |
| Total | 24,382.7 | 19,477.7-29,287.7 | 33,912.6 | 33,429.3-34,395.9 | .003∗ |
CI = confidence interval; COVID-19 = coronavirus disease 2019.
∗
P ≤ .05.