. Author manuscript; available in PMC: 2021 Nov 1.

Published in final edited form as: Am J Emerg Med. 2019 Nov 28;38(11):2335–2342. doi: 10.1016/j.ajem.2019.11.038

Table 3.—

Pooled statistics for sensitivity and specificity of CT contrast extravasation for major arterial injury (subgroup analyses).

Group	No. of studies	Sensitivity (%)	Specificity (%)
Overall	23	80 (66, 90)	93 (90, 96)
CT detector rows
64	7	94 (86, 97)^†	89 (81, 93)
<64	16	69 (51, 82)^†	95 (92, 97)
Scanning protocol
Multiphasic	4	95 (83, 99)^†	92 (84, 97)
Single phase	19	74 (57, 85)^†	94 (90, 96)
Reference standard
Angiopositivity	13	80 (53, 93)	93 (90, 95)
TAE or other intervention	10	82 (68, 91)	94 (87, 97)
Prevalence of positives
≥ 10%	16	76 (54, 89)	90 (85, 93)^†
< 10%	7	86 (75, 92)	97 (94, 99)^†
Study size
n > 50	17	84 (69, 93)	94 (90, 96)
n ≤ 50	6	64 (33, 87)	90 (82, 94)

Note: data are pooled estimates with 95% confidence intervals in parentheses.

^†

indicates statistically significant differences between the two subgroups (p < 0.05).