| antixarin versus unfractionated heparin | |||
| Limmer, 1994 | Antixarin 2500 anti Xa units versus UFH 15 000 units | General surgery | Open |
| ardeparin versus unfractionated heparin | |||
| Godwin, 1993 | Ardeparin 90 and 50 units/kg b.i.d versus UFH 10 000 units | Abdominopelvic surgery | Blind |
| aspirin versus control | |||
| Clagett, 1975 | A1300 versus control | open | |
| Zekert VI, 1982 | A1500 versus control | open | |
| aspirin versus placebo | |||
| MRC, 1972 | A600 versus placebo | general surgery | double-blind |
| Loew DVT, 1974 | A600 versus Placebo | double-blind | |
| Erfurt-A, 1979 | A1500 versus Placebo | double-blind | |
| Zekert V, 1980 | A1500+Hep??? versus Placebo | double-blind | |
| Vinazzer I, 1980 | A1500+Hep v Hep versus Placebo | double-blind | |
| Vinazzer II, 1977 | A1000+Hepv Hep versus Placebo | double-blind | |
| PEP hip-fracture, 2000 | aspirin 160mg/d started preoperatively and continued for 35 days versus placebo | patients undergoing surgery for hip fracture | Double blind Follow-up duration: 35 days Australia, New Zealand, South Africa, |
| PEP elective arthroplasty, 2000 | aspirin 160mg/d started preoperatively and continued for 35 daysA versus placebo | Patients undergoing elective hip or knee arthroplasty | Double blind Follow-up duration: 35 days New Zealand |
| certoparin versus unfractionated heparin | |||
| Schmitz-Huebner, 1984 | Certoparin (dose 1 and dose 2) b.i.d. versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Sasahara, 1986 | Certoparin 3000 + DHE versus UFH 10 000 units +DHE | Abdominal surgery | Blind Follow-up duration: 7 days |
| Voigt, 1986 | Certoparin 3000 + DHE versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 10 days |
| Welzel, 1988 | Certoparin 2500 + DHE versus UFH 10 000 units+DHE | Abdominal surgery | Open Follow-up duration: 7 days |
| Kakkar, 1989 | Certoparin 3000 + DHE versus UFH 10 000 units+DHE | Abdominal surgery | Blind |
| Adolf, 1989 | Certoparin 3000 versus UFH 15 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Heilmann, 1989 | Certoparin 3000 versus UFH 15 000 units | Gynaecological surgery | Blind Follow-up duration: 10 days |
| Baumgartner, 1989 | Certoparin 3000 + DHE versus UFH 5 000 units+DHE | Abdominal surgery | Blind Follow-up duration: 10 days |
| Hoffmann and Largiade, 1990 | Certoparin 3000 + DHE versus UFH 10 000 units | Abdominal surgery | NA |
| Koppenhagen, 1990 | Certoparin 3000 anti Xa units versus UFH 15 000 units | Abdominal surgery | Blind |
| Schielke, 1991 | Certoparin 3000 anti Xa units + DHE versus UFH 10 000 units + DHE | Abdominal surgery | Open |
| Koppenhagen, 1992 | Certoparin 3000 anti Xa units versus UFH 15 000 units | Abdominal surgery | Blind |
| Hoffmann and Largiader, 1992 | Certoparin 3000 anti Xa units versus UFH 10 000 units | Abdominothoracic surgery | Blind |
| Heilmann, 1997 | Certoparin 3000 anti Xa units versus UFH 15 000 units | Gynaecological and breast surgery | Blind |
| Haas, 1999 | Certoparin 3000 anti Xa units versus UFH 15 000 units | General surgery | Blind |
| dalteparin versus placebo | |||
| Ockelford , 1989 | Dalteparin 2500 anti-Xa units versus Placebo | general surgery | Blind |
| dalteparin versus unfractionated heparin | |||
| Briel, 1988 | Dalteparin 5000 versus UFH 10 000 units+DHE | Gynaecological surgery | NA |
| Bergqvist, 1986 | Dalteparin 5000 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Onarheim, 1986 | Dalteparin 5000 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Koller, 1986 | Dalteparin 7500 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 30 days |
| Koller, 1986 | Dalteparin 2500 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 30 days |
| Fricker, 1988 | Dalteparin 5000 versus UFH 15 000 units | Abdominopelvic surgery | Open Follow-up duration: 1-2 months |
| Bergqvist, 1988 | Dalteparin 5000 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Caen, 1988 | Dalteparin 2500 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: 1 month |
| Borstad, 1988 | Dalteparin 5000 versus UFH 10 000 units | Gynaecological surgery | Blind |
| Creperio, 1990 | Dalteparin 2500 versus UFH 10 000 units | General surgery | Blind |
| Hartl, 1990 | Dalteparin 2500 versus UFH 10 000 units | Abdominal surgery | Blind Follow-up duration: > 7 days |
| Borstad, 1992 | Dalteparin 2500 anti Xa units versus UFH 10 000 units | Gynaecological surgery | Blind |
| Kakkar, 1993 | Dalteparin 2500 anti Xa units versus UFH 10 000 units | Abdominal surgery | Blind |
| dipyridamol + aspirin versus control | |||
| Parodi I, 1973 | Dip,A1000+Dip versus control | open | |
| Parodi II, 1973 | A1500,Dip,A+Dip versus control | open | |
| Australian I, 1975 | A1000+Dip versus control | open | |
| Australian II, 1976 | A1000+Dip versus control | open | |
| Toulouse I, 1979 | A990+Dip versus control | open | |
| Zekert-III, 1977 | A1500,A1300+Dip,A1000+Dip versus control | open | |
| Harjola DVT, 1982 | A1500,Dip,A+Dip versus control | open | |
| Weiss, 1977 | A990+Dip versus control | open | |
| dipyridamol + aspirin versus placebo | |||
| Encke IA, 1976 | A990,A+Dip versus Placebo | double-blind | |
| Encke IB, 1976 | A1500,A990+Dip versus Placebo | double-blind | |
| enoxaparin versus no treatment | |||
| Ho [43], | Enoxaparin 4000 anti-Xa units versus No treatment | Open | |
| enoxaparin versus unfractionated heparin | |||
| Samama 2, 1988 | Enoxaparin 4000 versus UFH 15 000 units | General surgery | Open Follow-up duration: 7 days |
| Samama 1, 1988 | Enoxaparin 2000 versus UFH 15 000 units | General surgery | Open Follow-up duration: 7 days |
| Samama 3, 1988 | Enoxaparin 6000 versus UFH 15 000 units | General surgery | Open Follow-up duration: 7 days |
| Kaaja, 1992 | Enoxaparin 2000 anti Xa units versus UFH 10 000 units | Gynaecological surgery | Blind |
| Gazzaniga (ISG), 1993 | Enoxaparin 2000 anti Xa units versus UFH 10 000 units | General and vascular surgery | Open |
| Nurmohamed, 1995 | Enoxaparin 2000 anti Xa units versus UFH 15 000 units | General surgery | Blind |
| McLeod (Canadian), 1995 | Enoxaparin 4000 anti Xa units versus UFH 15 000 units | Colorectal surgery | Blind |
| Gonzalez, 1996 | Bemiparin 2500 anti Xa units versus UFH 10 000 units | Abdominal surgery | Blind |
| ENOXACAN, 1997 | Enoxaparin 4000 anti Xa units versus UFH 15 000 units | Abdominopelvic surgery | Blind |
| fluxum versus placebo | |||
| Valle , 1988 | Parnaparin 3200 anti-Xa units versus Placebo | general surgery | Blind |
| hydroxychloroquine versus placebo | |||
| Carter IA, 1971 | Hydroxy versus placebo | double-blind | |
| Carter IB, 1971 | Hydroxy versus placebo | double-blind | |
| Carter II, 1974 | Hydroxy versus Placebo | double-blind | |
| New York, 1977 | Hydroxy versus placebo | double-blind | |
| Vermont, 1975 | Hydroxy versus placebo | double-blind | |
| nadroparin versus no treatment | |||
| Marassi [41], | Nadroparin 2850 anti-Xa units versus No treatment | Open | |
| nadroparin versus placebo | |||
| Balas [40], | Nadroparin 2850 anti-Xa units versus Placebo | Blind | |
| Pezzuoli, 1989 | Nadroparin 2850 anti-Xa units versus Placebo | general surgery | Blind |
| nadroparin versus unfractionated heparin | |||
| Kakkar and Murray, 1985 | Nadroparin 2850 versus UFH 10 000 units | General surgery | Blind Follow-up duration: 10 days |
| EFS, 1988 | Nadroparin 2850 versus UFH 15 000 units | Abdominal surgery | Open Follow-up duration: 1 month |
| Dahan, 1989 | Nadroparin 2850 versus UFH 15 000 units | Thoracic surgery | Open |
| Barbui, 1990 | Nadroparin 2850 anti Xa units versus UFH 10 000 units | General surgery | Open |
| Eurin, 1994 | Nadroparin 2850 anti Xa units versus UFH 15 000 units | Abdominopelvic surgery | Open |
| parnaparin versus unfractionated heparin | |||
| Catania, 1988 | Parnaparin 3200 versus UFH 15 000 units | Abdominal surgery | Open |
| Salcuni, 1988 | Parnaparin 3200 versus UFH 15 000 units | Abdominal surgery | Open |
| Verardi, 1989 | Parnaparin 6400 versus UFH 10 000 units | Abdominal/urological surgery | NA |
| Garcea, 1992 | Parnaparin 3200 anti Xa units versus UFH 15 000 units | Abdominal surgery | Open |
| reviparin versus unfractionated heparin | |||
| Kakkar, 1993 | Reviparin 1750 anti Xa units versus UFH 10 000 units | General and gynaecological surgery | Blind |
| sp versus control | |||
| Veth, 1985 | Sp+Hep v Hep versus control | open | |
| sp versus placebo | |||
| Athens, 1981 | Sp versus placebo | double-blind | |
| SSHA versus unfractionated heparin | |||
| ToÈrngren, 1984 | SSHA 50 mg and 37.5 mg versus UFH 10 000 units | General surgery | Blind Follow-up duration: Discharge |
| Suloctidil versus placebo | |||
| Turpie, 1985 | Suloctidil versus Placebo | double-blind | |
| ticlopidine versus placebo | |||
| Lasierra, 1982 | Ticlopidine versus placebo | double-blind | |
| Walker, 1974 | ticlopidine versus placebo | double-blind | |
| tinzaparin versus placebo | |||
| Bergqvist [42], | Tinzaparin 3500 anti-Xa units versus Placebo | Blind | |
| tinzaparin versus unfractionated heparin | |||
| Leizorovicz, 1991 | Tinzaparin 2500 and 3500 anti Xa units versus UFH 10 000 units | Abdominothoracic and gynaecological surgery | Blind |
| UFH versus aspirin | |||
| Loew, 1977 | UFH twice daily for 7 days versus aspirin | all other general surgery | |
| Vinazzer, 1980 | UFH twice daily for A days versus aspirin | all other general surgery | |
| UFH versus DHE | |||
| Muiticentre, 1984 | UFH twice daily for 5-7 days versus DHE | all other general surgery | |
| Muiticentre 53,S4, 1984 | UFH twice daily for 5-7 days versus DHE | all other general surgery | |
| UFH versus no treatment | |||
| Abernethy, 1974 | UFH twice daily for 7 days versus no treatment | all other general surgery | |
| Abraham-Inpijn, 1979 | UFH twice daily for 7 days versus no treatment | all other general surgery | |
| Bergqvist, 1980 | UFH twice daily for 5 days versus no treatment | all other general surgery | |
| Caloghera, 1984 | UFH 3 times daily for 7 days versus no treatment | all other general surgery | |
| Clarke-Pearson, 1983 | UFH twice daily for 7 days versus no treatment | all other general surgery | |
| Gallus, 1973 | UFH 3 times daily for A versus no treatment | all other general surgery | |
| Gallus, 1976 | UFH 3 times daily for 7 days versus no treatment | all other general surgery | |
| Gordon-Smith, 1972 | UFH twice daily for 5 days versus no treatment | all other general surgery | |
| Groote Schuur, 1979 | UFH 3 times daily for 6 days versus no treatment | all other general surgery | |
| Gruber, 0 | UFH 3 times daily for 7 days versus no treatment | All other general surgery | |
| Kakkar (IMT), 0 | UFH 3 times daily for 7 days versus no treatment | All other general surgery | |
| Kettunen, 1974 | UFH 3 times daily for 7 days versus no treatment | all other general surgery | |
| Koppenhagen, 1982 | UFH twice daily versus no treatment | all other general surgery | |
| Kraytman, 1976 | UFH 3 times daily for 6 days versus no treatment | all other general surgery | |
| Kraytman, 1977 | UFH 3 times daily for 6 days versus no treatment | all other general surgery | |
| Marchelli, 1983 | UFH 3 times daily for ? versus no treatment | all other general surgery | |
| Multiunit, 1974 | UFH twice daily for 7 days versus no treatment | all other general surgery | |
| Nicolaides, 1972 | UFH twice daily for 7 days versus no treatment | all other general surgery | |
| Plante, 1979 | UFH twice daily for 8 days versus no treatment | all other general surgery | |
| Sagar, 1974 | UFH twice daily for 5 days versus no treatment | all other general surgery | |
| Spebar, 1981 | UFH twice daily for 5-7 days versus no treatment | all other general surgery | |
| Ziemski, 1979 | UFH 3 times daily for 2 days versus no treatment | all other general surgery | |
| UFH versus oral anticoagulant | |||
| van Geloven, 1977 | UFH twice daily for 4 days versus Oral anticoagulant | all other general surgery | |
| UFH versus placebo | |||
| Belch, 1980 | UFH twice daily for 7 days versus placebo | all other general surgery | |
| Covey, 1975 | UFH twice daily for 8 days versus placebo | all other general surgery | |
| Jourdan, 1984 | UFH twice daily for 5 days versus placebo | all other general surgery | |
| Kakkar, 1972 | UFH twice daily for 7 days versus placebo | All other general surgery | |
| Kiil, 1978 | UFH twice daily for 7 days versus placebo | All other general surgery | |
| Kraytman, 1977 | UFH 3 times daily for 6 days versus placebo | all other general surgery | |
| Kruse-Blinkenberg, 1980 | UFH 3 times daily for 8 days versus placebo | all other general surgery | |
| Lahnborg, 1975 | UFH twice daily for 5 days versus placebo | all other general surgery | |
| Lahnborg, 1976 | UFH twice daily for 5 days versus placebo | all other general surgery | |
| Lawrence, 1977 | UFH twice daily for 5 days versus placebo | all other general surgery | |
| Marchetti, 1982 | UFH 3 times daily versus placebo | all other general surgery | |
| Muiticentre, 1984 | UFH twice daily for 5-7 days versus placebo | all other general surgery | |
| Ribaudo, 1975 | UFH twice daily for A days versus placebo | all other general surgery | |
| Roberts, 1975 | UFH twice daily for 7 days versus placebo | all other general surgery | |
| Strand, 1975 | UFH twice daily for 7 days versus placebo | all other general surgery | |
| Taberner, 1978 | UFH twice daily for 7 days versus placebo | all other general surgery | |
| Torngren, 0 | UFH twice daily for 6-8 days versus placebo | all other general surgery | |
| Torngren, 1978 | UFH 3 times daily for 6-8 days versus placebo | all other general surgery | |
| Torngren, 1978 | UFH twice daily for 6-8 days versus placebo | all other general surgery | |
| Wu, 1977 | UFH twice daily for 7 days versus placebo | all other general surgery | |
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