Table 2:

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.