Table 1.
Characteristics of the included primary studies identified in the systematic review that reported on diagnostic outcomes
First author | Year | Location | Study type | Study duration (months) | Total patients | Mean age (range) (years) | Proportion of women | Number of operative patients | Reference Standard | Reference standard positive appendicitis | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
S Serinsoz30 | 2021 | Turkey | Retrospective, centre unknown | 24 | 70 | 32 (11–71) | 63% | 40 | Surgical results; unclear for non-operated patients | 37/70 (53%) | ||||||||||
G Islam31 | 2021 | India | Prospective, single-centre | 18 | 67 | 24 (6–70) | 37% | 39 | Histopath; or clinical follow-up | 45/67 (67%) | ||||||||||
A Inoue32 | 2019 | Japan | Retrospective, single-centre | 10 | 51 | 35 (6–90) | 53% | 25 | Surgery; or clinical follow-up and CT | 35/51 (69%) | ||||||||||
M Repplinger33 | 2018 | USA | Prospective, single-centre | 30 | 198 | 32 (12–81) | 58% | Not reported | Expert panel; Histopath or clinical follow-up | 64/198 (32%) | ||||||||||
S Byott34 | 2016 | England | Prospective, single-centre | 60 | 468 | Median 27 (7–59) | 74% | 116 | Surgical, histological, and clinical follow-up | 38/468 (8%) | ||||||||||
I Petkovska35 | 2016 | USA | Retrospective, single-centre | 24 | 253 | Not reported | Not reported | Not reported | Expert panel; surgical results; or clinical follow-up | 35/253 (14%) | ||||||||||
H Gielkens36 | 2016 | Netherlands | Prospective, single-centre | 18 | 112 | Median 22 (12–55) | 100% | 51 | Histopath; or clinical follow-up | 29/112 (26%) | ||||||||||
M Leeuwenburgh37 | 2014 | Netherlands | Prospective, multi-centre | 6 | 223 | 35 (18–84) | 62% | 128 | Expert panel; surgical findings, histopath, and clinical-follow-up | 117/223 (52%) | ||||||||||
S Avcu38 | 2013 | Turkey | Prospective, single-centre | 12 | 55 | 36 (17–83) | 43% | 40 | Histopath; unclear for non-operated patients | 40/55 (73%) | ||||||||||
First Author | Year | Location | Study type | Study duration (months) | Total patients | Mean age (range) (years) | Proportion of women | Number of operative patients | Reference Standard | Reference standard positive appendicitis | ||||||||||
B Zhu39 | 2012 | China | Prospective, single-centre | 24 | 41 | 42 (range not reported) | 56% | 41 | Surgery/histopath | 36/41 (88%) | ||||||||||
E Inci40 | 2011 | Turkey | Prospective, single-centre | 11 | 119 | 27 (17–72) | 36% | 92 | Histopath; unclear for non-operated patients | 79/119 (66%) | ||||||||||
E Chabanova41 | 2011 | Denmark | Prospective, single-centre | Not reported | 48 | 37 (18–70) | 60% | 48 | Surgery/histopath | 30/48 (63%) | ||||||||||
L Cobben42 | 2009 | Netherlands | Prospective, single-centre | 22 | 138 |
Not reported (6–80) |
58% | 64 | Histopath; or clinical follow-up | 62/138 (44.9%) | ||||||||||
A Singh43 | 2008 | USA | Retrospective, multi-centre | 72 | 67 | 34 (11–69) | 91% | Not reported | Surgical results; unclear for non-operated patients | 12/67 (18%) | ||||||||||
N Nitta44 | 2005 | Japan | Prospective, single-centre | Not reported | 37 | 37 (16–69) | 51% | 31 | Surgery/histopath; clinical follow-up | 29/37 (43%) | ||||||||||
L Incesu46 | 1997 | Turkey | Prospective, single-centre | 22 | 60 | 20 (14–71) | 55% | 39 | Surgery/histopath; or clinical follow-up | 34/60 (57%) |