Table 1.

Features of current AAA screening programmes worldwide

Programme	Patients	Method	Threshold for inclusion into surveillance	Surveillance Schedule	Referral to surgeon
UK NAAASP	Men 65th year	Ultrasound ITI	30 mm	30–44 mm yearly 45–54 mm 3 months	55 mm
Sweden	Men 65th year	Ultrasound LELE	30 mm (25–29 mm rescreened at 5 years)	25–29 mm 5 years 30–39 mm 2 years 40–44 mm 1 year 45–50 mm 6 months 50–54 mm 3 months	55 mm
USA	Men 65–75 years Women with significant family history	Ultrasound Not specified	30 mm	29–29 mm 5 years 30–34 mm 3 years 35–44 mm 12 months 45–54 6 months	50 mm

ITI, inner-to-inner measurement; LELE, leading edge-to-leading dge; NAAASP, national abdominal aortic aneurysm screening programme.