Table 1.

Adjusted incidence rate ratio of change in radiology utilisation by the older Australian population between 2009–10 and 2018–19, overall and by age-sex group

	Overall	Females			Males
	≥ 65	65–74	75–84	≥ 85	65–74	75–84	≥ 85
Ultrasound
Total chest	1.06 (1.06–1.07)	1.04 (1.03–1.04)	1.06 (1.05–1.06)	1.09 (1.08–1.10)	1.03 (1.03–1.04)	1.05 (1.04–1.05)	1.13 (1.11–1.15)
Heart	1.06 (1.05–1.07)	1.03 (1.03–1.03)	1.05 (1.05–1.06)	1.09 (1.08–1.10)	1.03 (1.03–1.03)	1.04 (1.04–1.05)	1.13 (1.11–1.15)
Other thorax	1.15 (1.13–1.16)	1.16 (1.13–1.18)	1.17 (1.15–1.20)	1.18 (1.16–1.20)	1.10 (1.09–1.11)	1.10 (1.10–1.11)	1.15 (1.14–1.17)
Total Abdomen	1.04 (1.04–1.05)	1.03 (1.02–1.03)	1.04 (1.03–1.04)	1.05 (1.05–1.06)	1.03 (1.02–1.03)	1.03 (1.02–1.04)	1.10 (1.08–1.12)
Abdominal vessels	1.07 (1.06–1.08)	1.05 (1.05–1.06)	1.06 (1.06–1.07)	1.10 (1.09–1.11)	1.04 (1.03–1.04)	1.05 (1.04–1.06)	1.13 (1.11–1.15)
Other abdominal	1.03 (1.02–1.04)	1.02 (1.01–1.02)	1.03 (1.02–1.03)	1.03 (1.03–1.04)	1.02 (1.02–1.03)	1.02 (1.01–1.02)	1.07 (1.05–1.09)
Total extremities	1.07 (1.06–1.08)	1.05 (1.05–1.06)	1.07 (1.06–1.08)	1.09 (1.08–1.10)	1.05 (1.04–1.05)	1.06 (1.05–1.06)	1.13 (1.11–1.14)
Upper extremities	1.08 (1.07–1.09)	1.05 (1.05–1.06)	1.08 (1.07–1.09)	1.11 (1.10–1.12)	1.05 (1.05–1.06)	1.07 (1.06–1.08)	1.14 (1.12–1.16)
Lower extremities	1.13 (1.12–1.14)	1.10 (1.09–1.11)	1.13 (1.11–1.15)	1.16 (1.14–1.17)	1.10 (1.09–1.11)	1.12 (1.10–1.13)	1.19 (1.17–1.22)
Extremities vessels	1.06 (1.05–1.06)	1.03 (1.02–1.03)	1.05 (1.05–1.06)	1.07 (1.07–1.08)	1.03 (1.02–1.03)	1.04 (1.04–1.05)	1.11 (1.10–1.13)
Total hip joint	1.08 (1.07–1.09)	1.04 (1.04–1.05)	1.08 (1.07–1.10)	1.11 (1.10–1.12)	1.04 (1.03–1.05)	1.06 (1.05–1.08)	1.13 (1.10–1.15)

All estimates were adjusted by age and gender. 95% confidence intervals are given in parentheses