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).