Table 5.

Comparison of recently published appendix visualization rates in children

Study	Year	Country	Study type	SS includeda)	Exams performed by	Sample size	Visualized (%)
Cundy et al. [6]	2016	Australia	Retrospective	NS	Sonographers	3,799	91.7
This study	2018	Australia	Prospective	Y	Sonographers	230	68.7
Lofvenberg et al. [9]	2016	Sweden	Retrospective	Y	Radiologists	438	47
Cohen et al. [19]	2015	USA	Retrospective	N	Sonographers and radiologists	1,383	43.8
Reddan et al. [16]	2016	Australia	Retrospective	NS	Sonographers	457	40.7
Partain et al. [20]	2016	USA	Retrospective	Y	Sonographers	825	36
Alter et al. [8]	2017	USA	Retrospective	N	Sonographers	441	21

^a)Were the secondary sonographic signs of appendicitis incorporated in the examination findings: Y, yes; N, no; NS, not specifically.