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Table 5: Diagnostic performance of CTA according to aneurysm size*
Size Sensitivity PPV
<3 mm 0.38 (6/16) 0.86 (6/7)
    95% CI 0.18–0.61 0.57–0.99
3–5.9 mm 0.98 (49/50) 0.98 (49/50)
    95% CI 0.89–1.00 0.89–1.00
6–10 mm 1.00 (36/36) 0.97 (36/37)
    95% CI 0.89–1.00 0.85–1.00
>10 mm 1.00 (15/15) 1.00 (15/15)
    95% CI 0.76–1.00 0.76–1.00
* Numbers between parentheses are aneurysms.

Size	Sensitivity	PPV
<3 mm	0.38 (6/16)	0.86 (6/7)
95% CI	0.18–0.61	0.57–0.99
3–5.9 mm	0.98 (49/50)	0.98 (49/50)
95% CI	0.89–1.00	0.89–1.00
6–10 mm	1.00 (36/36)	0.97 (36/37)
95% CI	0.89–1.00	0.85–1.00
>10 mm	1.00 (15/15)	1.00 (15/15)
95% CI	0.76–1.00	0.76–1.00