Helmer (2002)

Pediatric & adult

438

X

X

X

Dubois (2010)

Adult

317

X

X

X

Zinaman (2003)

Adult

42

X

X

Keller (1996)

Pediatric/complicated appendicitis

56

X

X

X

Firilas (1999)

Pediatric

147

X

X

X

Adibe (2011)

Pediatric

311

X

Knott (2013)

Pediatric/PA

209

X

X

Putnam (2014)

Pediatric

794

X

X

Akkoyun (2013)

Pediatric

129

X

X

X

Hussain (2014)

Adult

30

X

Almonda (2008)

Pediatric

429

X

X

X

Antevil (2006)

Adult

992

X

Smink (2004)

Pediatric

959

X

Garcia Pena (2002)

Pediatric

1338

X

Krishnamoorthi (2011)

Pediatric

631

X

Santillanes (2012)

Pediatric

475

X

Naoum (2002)

Adult

194

X

Yu (2014)

Pediatric/complicated appendicitis

94

X

Torbati (2003)

Adult & pediatric

506

X

X

Ball (2014)

Adult

741

X

Skarda (2014)

Pediatric/ruptured appendicitis

306

X

X

Bensard (2009)

Pediatric

72

X