Table 1 Information, risk estimation and quality assessment of studies with non-medical controls
From: The occupational risk of Helicobacter pyloriinfection among gastroenterologists and their assistants
First author, year | Study area | Gastros (HP positive %) | Controls (HP positive %) | Diagnostic method | RR | 95%CI | Study quality |
|---|---|---|---|---|---|---|---|
Mastromarino 2005 [25] | Italy | S 92 (40) D 47 (34) A 45 (37) | 52 (19) hosp | Stool antigen test | S 1.9 D 1.8 A 2.1 | 1.04-3. 6 0.9-3.5 1.1-4.0 | good |
Birkenfeld 2004 [26] | Israel | S 190 (73) D 88 (72) A 50 (53) | 4633 (53) pat | Breath test | S 1.8 D 1.4 A 1.5 | 1.3-1.5 1.2-1.5 1.3-1.7 | good |
Hildebrand 2000 [27] | Switzerland | D 92 (39) | 168 (38) pop | Breath test | D 1.03 | 0.8-1.4 | good |
Ellett 1999 [28] | USA | A 138 (14) | 112 (18) don | Serology | A 0.8 | 0.4-1.4 | good |
Monés 1999 [29] | Spain | D 137 (53) | 189 (52) pop | Breath test | D 1.03 | 0.8-1.3 | good |
Abbas 1998 [30] | Pakistan | S 33 (79) D 19 (68) A 14 (93) | 33 (58) neighbours | Serology | S 1.4 D 1.2 A 1.6 | 0.97-1.9 0.8-1.8 1.2-2.2 | good |
Nishikawa 1998 [31] | Japan | S 121 (30) D 92 (30) A 29 (28) | 101 (25) pop | Serology | S 1.2 D 1.2 A 1.1 | 0.8-1.9 0.8-2.0 0.6-2.2 | good |
Braden 1997 [32] | Germany | S 1091 (38) D 922 (38) A 169 (37) | 413 (27) pop | Breath test | S 1.4 D 1.4 A 1.4 | 1.2-1.7 1.2-1.7 1.1-1.7 | good |
Goh 1996 [33] | Malaysia | S 82 (33) D 34 (41) A 48 (27) | 53 (11) pop | Breath test | S 2.9 D 3.6 A 2.4 | 1.3-6.6 1.6-8.5 0.99-5.8 | good |
Liu 1996 [34] | China | S 170 (81) D 125 (82) A 45 (78) | 702 (45) pop | Serology | S 1.8 D 1.9 A 1.7 | 1.6-2.0 1.7-2.1 1.5-2.1 | good |
Chong 1994 [35] | USA | S 122 (53) D 111 (52) A 11 (52) | 510 (14) don | Serology | S 3.8 D 3.7 A 3.9 | 2.9-5.0 2.8-4.9 2.2-6.9 | good |
Lin 1994 [36] | Australia | D 39 (69) A 107 (17) | 195 (37) pop 115 (37) pop | Serology | D 1.9 A 0.6 | 1.4-2.5 0.4-1.01 | good |
Velasco 2007 [37] | Cuba | S 38 (39) | 38 (8) hosp | Serology | S 5.0 | 1.6-15.9 | moderate |
Prónai 2000 [38] | Hungary | D 101 (30) | 426 (54) pop | Breath test | D 0.6 | 0.4-0.8 | moderate |
Kamat 1999 [39] | India | D 17 (29) | 35 (20) hosp | Serology | D 1.5 | 0.6-4.0 | moderate |
Rudi 1997 [40] | Germany | S 75 (24) | 110 (35) hosp | Serology | S 0.7 | 0.4-1.1 | moderate |
Pristautz 1994 [41] | Austria | D 88 (57) | 100 (51) pop+don | Serology | D 1.1 | 0.9-1.5 | moderate |
Mitchel 1989 [42] | Australia | S 101 (30) D 33 (51) A 68 (19) | 715 (22) don | Serology | S 1.4 D 2.4 A 0.9 | 0.99-1.9 1.7-3.4 0.5-1.5 | moderate |
Reiff 1989 [43] | Germany | S 45 (69) | 165 (65) stud+don+pat | Serology | S 1.1 | 0.9-1.3 | moderate |
Rawles 1987 [44] | USA | S 38 (32) | 20 (10) don | Serology | S 3.2 | 0.8-12.8 | moderate |
Morris 1986 [45] | New Zealand | S 36 (25) D 21 (33) A 11 (18) | 261 (37) pop | Serology | S 0.7 D 0.9 A 0.5 | 0.4-1.2 0.5-1.7 0.1-1.8 | moderate |