Patient characteristics and volumes of emergency department CT examinations performed at Hamilton Health Sciences*
| Variable | Before pandemic | During pandemic | p value |
|---|---|---|---|
| Patient age, yr, median (range) | 67 (0–103) | 65 (0–98) | 0.06 |
| Patient sex, % male (male to female ratio) | 45.4 (464:557) | 47.4 (330:366) | |
| CT examinations, no. (95% CI) | |||
| CT examination of the head, n = 944 | 587 (540–636) | 357 (321–396) | < 0.001 |
| CT angiogram of the head and neck, n = 76 | 47 (35–63) | 29 (19–42) | 0.04 |
| CT pulmonary angiogram, n = 222 | 146 (123–172) | 76 (60–95) | < 0.001 |
| CT examination of the abdomen and pelvis, n = 475 | 241 (212–273) | 234 (205–266) | 0.7 |
| Total, n = 1717 | 1021 (959–1086) | 696 (645–750) | < 0.001 |
Note: CI = confidence interval, CT = computed tomography.
* Data are presented as total counts unless otherwise indicated.