From: The Alvarado score for predicting acute appendicitis: a systematic review
First author, study year [reference] | Number of patients | Age (years) | Gender n | Appendicitis prevalence (%) | Country | Setting | Study type | Patient population |
---|---|---|---|---|---|---|---|---|
Abdeldaim 2007 [19] | 242 | Median 42 Range 8 to 76 | Male 90 Female 152 | 51 | Ireland | Emergency department | Retrospective | Right iliac fossa pain |
Al Qahtani 2004 [8] | 211 | Mean 32 Range 13 to 70 | Male 125 Female 86 | 57 | Saudi Arabia | Emergency department | Prospective | Suspected acute appendicitis |
Alvarado 1986 [5] | 277 | Mean 25.3 Range 4 to 80 | Male 131 Female 96 | 82 | USA | Hospital inpatients | Prospective | Abdominal pain |
Arain 2001 [20] | 100 | Mean 19.9 | Males 44 Females 56 | 48 | Pakistan | Surgical unit | Prospective | Suspected acute appendicitis |
Baidya 2007 [44] | 231 | Mean 26.3 Range 16 to 65 | Male 141 Female 90 | 52 | India | Emergency department | Prospective | Right iliac fossa pain |
Bond 1990 [21] | 187 | Range 0 to 18 | Â | 61 | USA | Emergency department | Prospective | Abdominal pain |
Borges 2003 [22] | 76 | Age 2 to 6 = 23 Age 7 to 10 = 38 Age > 10 = 15 | Male 40 Female 36 | 71 | Brazil | Emergency department | Prospective | Suspected acute appendicitis |
Canavosso 2008 [23] | 224 | Mean 26.65 Range 13 to 82 | Male 117 Female 10 | 84 | Argentina | Emergency department | Prospective | Right lower quadrant pain |
Chan 2001 [25] | 148 | Mean 29 Range 10 to 73 | Male 107 Female 41 | 34 | Singapore | Emergency department | Retrospective | Suspected acute appendicitis |
Chan 2003 [24] | 175 | Mean 30 Range 8 to 73 | Male 130 Female 45 | 43 | Singapore | Emergency department | Prospective | Right iliac fossa pain |
Denizbasi 2003 [45] | 221 | Mean 26.6 | Male 112 Female 109 | 79 | Turkey | Emergency department | Prospective | Abdominal pain and suspected acute appendicitis |
Escriba 2011 [42] | 99 | Mean 11.2 Range 4 to 17.8 | Male 62 Female 37 | 42 | Spain | Emergency department | Prospective | Abdominal pain/suspected appendicitis |
Farahnak 2007 [26] | 21 | - | - | 48 | Iran | Emergency department | Prospective | Abdominal pain |
Gwynn 2001 [27] | 215 | - | - | 66 | USA | Emergency department | Retrospective | Abdominal pain |
Hsiao 2005 [28] | 222 | Mean 9.4 Range 1 to 13 | Male 146 Female 76 | 50 | Taiwan | Emergency department | Retrospective | Suspected acute appendicitis |
Kang 1989 [46] | 62 | Mean 45.8 Range 18 to 78 | Male 42 Female | 68 | China | Hospital inpatients | Prospective | Suspected acute appendicitis |
Khan 2005 [29] | 100 | Mean 20.2 Range 9 to 56 | Female 59 Male 41 | 54 | Pakistan | Surgical ward | Prospective | Suspected acute appendicitis |
Kim 2006 [9] | 211 | - | - | 83 | Korea | Surgical ward | Retrospective | Suspected acute appendicitis |
Kim 2008 [18] | 157 | Mean 37.1 Range 15 to 84 | - | 57 | Korea | Emergency department | Prospective observational study | Abdominal pain |
Lada 2005 [10] | 83 | Mean 27.5 Range 15 to 75 | Male 43 Female 40 | 88 | Argentina | Emergency department | Prospective | Suspected acute appendicitis |
Malik 2000 [56] | 100 | Mean 22 Range 14 to 18 | Male 81 Female 19 | 92 | Pakistan | Surgical unit | Prospective | Suspected acute appendicitis |
McKay 2007 [31] | 150 | Mean 34 Range 18 to 76 | Male 78 Female 65 | 32 | USA | Emergency department | Retrospective | Abdominal pain |
Memon 2009 [32] | 100 | Mean age 24 Range 13 to 55 | Male 65 Female 35 | 91 | Pakistan | Surgical Ward | Prospective study | Suspected acute appendicitis |
Muenzer 2010 [47] | 28 | Test Cohort Mean 11 Validation cohort Mean 11 Range 2 to 17 | Test cohort Male 10 Female 10 Validation cohort Male 4 Female 4 | 54 | USA | Emergency department | Unclear | Abdominal pain |
Owen 1992 [11] | 215 | Â | Male 75 Female 70 Children 70 | 58 | Wales | Emergency department | Prospective observational study | GP referral for Suspected acute appendicitis |
Petrosyan 2008 [33] | 1,630 | Male: Median 29 yrs Range 3 to 85 yrs Female: Median 34 yrs Range 2 to 86 yrs | Male 928 Female 702 | 54 | USA | Emergency department | Retrospective | Right lower quadrant pain and suspected acute appendicitis |
Rezak 2011 [40] | 59 | Mean 8.5 Range 3 to 16 | Male 43 Female 16 | 51 | USA | Community teaching hospital | Retrospective | Suspected appendicitis |
Saidi 2000 [43] | 128 | Â | Male 49 Female 79 | 35 | Iran | Emergency department | Prospective | Suspected acute appendicitis |
Sanabria 2007 [34] | 374 | Mean 29.5 Range 15 to 71 | Male 178 Female 196 | 55 | Columbia | Emergency department | Prospective | Right iliac fossa pain and suspected acute appendicitis |
Schneider 2007 [12] | 588 | Median 11.9 Range 3 to 21 | Â | 33 | USA | Emergency department | Prospective cohort | Suspected acute appendicitis |
Shreef 2010 [41] | 350 | Mean 9.3 Range 8 to 14 | Male 228 Female 122 | 38 | Egypt, Saudi Arabia | Emergency department | Prospective | Suspected acute appendicitis |
Shrivastava 2004 [57] | 100 | Â | Male 45 Female 30 | 78 | India | Emergency department | Prospective | Suspected acute appendicitis |
Singh 2008 [35] | 100 | Mean 22.6 Median 25 | Male 55 Female 45 | 62 | India | Surgical Ward | Prospective | Suspected acute appendicitis |
Soomro 2008 [36] | 227 | Mean 20.47 Range 10 to 62 | Male 150 Females 77 | 55 | Pakistan | Emergency department | Prospective | Suspected acute appendicitis |
Stephens 1999 [37] | 94 | Mean 44 Range 3 to 79 | Males 46 Female 48 | 89 | USA | Surgical unit | Retrospective | All patients who underwent appendectomy for suspected acute appendicitis |
Tade 2007 [38] | 100 | Range 17 to 56 | Males 63 Female 37 | 34 | Nigeria | Emergency department | Prospective | Right iliac fossa pain and suspected acute appendicitis |
Wani 2007 [30] | 96 | Mean 25.46 Range 7 to 70 | Male 48 Female 48 | 70 | India | Surgical unit | Prospective | Suspected acute appendicitis |
Yildirim 2008 [39] | 143 | Mean 34 Range 18 to 76 | Male 78 Females 65 | 85 | Turkey | Emergency department | Prospective study | Abdominal pain |
Winn 2004 [58] | 142 | Â | Â | 39 | Australia | Surgical ward | Retrospective | Suspected acute appendicitis |
Subotic 2008 [59] | 57 | Mean 27.5 Range 16 to 70 | Male 27 Female 30 | 84 | Serbia | Emergency department | Prospective | Suspected acute appendicitis |
Andersson 2008 [60] | 229 | Mean 23 | Males 105 Females 124 | 33 | Sweden | Emergency department | Prospective | Suspected acute appendicitis |
Prabhudesai 2008 [61] | 60 | Mean 25.4 | Male 27 Female 33 | 40 | UK | Emergency department | Prospective | Suspected acute appendicitis |