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. 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)
n50 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).