9 research outputs found
Immobilisation of lead smelting slag within spent aluminate—fly ash based geopolymers
- Author
- Al-Zboon
- de Andrade Lima
- Duxson
- Ehsan
- Ettler
- Fernández Pereira
- G.J. Witkamp
- H.W. Nugteren
- Isoyama
- Izquierdo
- Komnitsas
- Kreusch
- Lassin
- Luna Galiano
- M.B. Ogundiran
- Moutsatsou
- Mulligan
- NEN 12457-4
- NEN 7345
- Nugteren
- Ogundiran
- Ogundiran
- Onisei
- Ozyildirim
- Palacios
- Palomo
- Perera
- Phair
- Provis
- Saikia
- Schoenung
- Swords
- USEPA
- USEPA
- Valdez
- Van Deventer
- Van Jaarsveld
- Van Jaarsveld
- Van Jaarsveld
- Yilmaz
- Zhang
- Publication venue
- 'Elsevier BV'
- Publication date
- Field of study
Geopolymerisation of fly ashes with waste aluminium anodising etching solutions
- Author
- Alvarez-Ayuso
- Andini
- ASTM C150- Standard Specification for Portland Cement American Society for Testing and Materials
- ASTM C618-02
- Basu
- Bingol
- Chen
- Davidovits
- Dungan
- Dutch Soil Quality Decree
- Duxson
- G.J. Witkamp
- GEOASH report
- H.W. Nugteren
- Izquierdo
- Kearsley
- M.B. Ogundiran
- Milford
- Moors
- Moreno
- NEN 12457-4
- NEN 7345
- NEN-EN 1170-6
- Nugteren
- Ogundiran
- Pandey
- Phair
- Rickard
- Sofi
- USEPA
- USEPA
- USEPA
- Van Deventer
- Van Jaarsveld
- Vassilev
- Xua
- Publication venue
- 'Elsevier BV'
- Publication date
- Field of study
Globalization and the spread of capitalism: material resonances
- Author
- Appadurai A.
- Armitage P.
- Atkinson D.
- Bain A.
- Barker D.
- Bateman N.
- Belcher J.
- Belford P.
- Berg M.
- Bloch M.
- Bloice B.
- Boivin N.
- Bourdieu P.
- Brooks A.
- Buchli V.
- Butler L.A.S.
- Chandra N.
- Cipolla C.
- Cooper F.
- Cooper F.
- Crawford I.A.
- Crewe V.
- Crosby A.W.
- Crosby A.W.
- Crossley D.
- Croucher S.
- Dalglish C.
- Dawson D.
- De Munck B.
- Deetz J.
- Diamond J.
- Dixon J.
- Douglas M.
- Edelman M.
- Egan G.
- Ferris N.
- Flatman J.
- Fothergill T.
- Frazer B.
- Friedman T.
- Funari P.
- Gaimster D.
- Gaimster D.
- Gaimster D.
- Games A.
- Games A.
- Gosden C.
- Graves-Brown P.
- Green A.
- Hall M.
- Hatfield A.L.
- Hatfield A.L.
- Helms M.
- Hickman C.
- Hodder I.
- Horning A.
- Horning A.
- Horning A.
- Horning A.
- Horning A.
- Hoskins J.
- Johnson M.
- Johnson M.
- Killock D.
- Leone M.
- Leone M.
- Lucas G.
- Lucas R.
- Lydon J.
- MacGregor A.
- Matthews C.
- McFarlane H.
- McKendrick N.
- Miller D.
- Miller D.
- Miller D.
- Mitchell A.
- Mizoguchi K.
- Moore K.
- Morley N.
- Moshenska G.
- Moussette M.
- Mrozowski S.
- Mrozowski S.
- Mrozowski S.
- Muldrew C.
- Newman R.
- Nordin J.
- Nordin J.
- Ogundiran A.
- Olsen B.
- Orser C.
- Orser C.
- Osterhammel J.
- Oswald A.
- Pendery S.
- Pope P.
- RCAHMS
- Schmidt P.
- Schmidt P.
- Scholte J.
- Schweickart E.
- Shackel P.
- Sikes K.
- Steger M.B.
- Steger M.B.
- Straube B.
- Svizzero S.
- Symonds J.
- Tait H.
- Tarlow S.
- Taussig M.
- Vries J. de
- Wallerstein I.
- Watney B.
- Webster J.
- Wilkie L.
- Wilson R.J.
- Wrathmell S.
- Wurst L.
- Young R.
- Ă“ SiochrĂş M.
- Publication venue
- 'Informa UK Limited'
- Publication date
- 01/01/2016
- Field of study
Distribution and Bioavailability of Metals in Gasoline Contaminated Sites in Lagos, Nigeria
- Author
- A. Franco-Uria
- A. Kabata-Pendias
- A. Kabata-Pendias
- A. Tessier
- A. Walkey
- A.J. Turki
- A.T. de Matos
- C. Baudouin
- C. Izquierdo
- C. Kabala
- E. Paterson
- F.A. Nicholson
- G.M.A. Bermudez
- H.F Preciado
- I. amos
- J. Sneddon
- K.M. Banat
- L. Hernandez
- L.A. Ostel
- M. Vijver
- M.B. Ogundiran
- M.G. Hickey
- M.M. Lasat
- N.T Basta
- O.A. Al-Khashman
- O.T. Adeyemi
- P.G.C. Campbell
- P.K. Padmavathiamma
- R.N Yong
- S. Sauve
- U. Forstner
- X.D. Li
- Publication venue
- 'Journal of Solid Waste Technology and Management'
- Publication date
- Field of study
Effect of the rate of calcination of kaolin on the properties of metakaolin-based geopolymers
- Author
- Akolekar D.
- Al-Zboon K.
- Antunes R.A.
- Barbosa V.F.F.
- Bich C.
- Castelein O.
- Castelein O.
- Cheng T.W.
- Duxson P.
- Elimbi A.
- Fabbri B.
- Ganesan N.
- Gasparini E.
- Gougazeh M.
- Granizo M.L.
- Heah C.Y.
- Housni A.D.
- Izquierdo M.
- Kuenzel C.
- Kumar A.
- Lancellotti I.
- Nicolas R.S.
- Ogundiran M.B.
- Oudadesse H.
- Palomo A.
- Panias D.
- Ptáček P.
- Rattanasak U.
- Rooses A.
- Rovnanik P.
- Sakulich A.R.
- Sathonsaowaphak A.
- Sumajouw M.J.
- Tchakoute K.H.
- Yusiharni E.
- Publication venue
- 'Elsevier BV'
- Publication date
- Field of study
Naturally Pb-contaminated soils in uranium and thorium anomaly
- Author
- Agency for Toxic Substances and Disease Registry (ATSDR)
- Agência Nacional de Vigilância Sanitária (National Health Surveillance Agency) (ANVISA)
- Carlos Eduardo de Oliveira Costa JĂşnior
- Cleomacio Miguel da Silva
- Costa A.C.
- CrescĂŞncio Andrade da Silva Filho
- Czupyrna G.
- Fernando Carlos AraĂşjo Ribeiro
- Jaworowski Z.
- JoĂŁo Adauto Souza Neto
- Kabata-Pendias A.
- McDowell L.R.
- Ministério da Saúde do Brasil (Ministry of Health of Brazil)
- Ogundiran M.B.
- Papanikolaoul N.C.
- Sebrae (Servico de apoio as micro e pequenas empresas de Pernambuco) [(Service of support to micro and small enterprises of Pernambuco)]
- Zach R.
- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
Practical knowledge and politics of encounter along the Lower Falémé River, Senegambia ( c.
- Author
- Amselle J.-L.
- Bathily A.
- Bathily A.
- Baxter M.J.
- Brumfiel E.M.
- Cameron D. Gokee
- Carr C.
- Clark A.F.
- Conkey M.W.
- Conkey M.W.
- Conrad D.C.
- Costin C.L.
- Croucher S.K.
- Curtin P.D.
- Curtin P.D.
- Curtin P.D.
- Curtin P.D.
- DeCorse C.R.
- DeCorse C.R.
- DeMarrais E.
- Diagne P.
- Dietler M.
- Diop B.
- Dobres M.-A.
- Dunnell R.C.
- Frank B.E.
- Gallay A.
- Gallay A.
- Gelbert A.
- Gelbert A.
- Gijanto L.
- Gomez M.A.
- Gomez M.A.
- Gosden C.
- Gosselain O.P.
- Gosselain O.P.
- Gosselain O.P.
- Hanson J.H.
- Hegmon M.
- Hegmon M.
- Herbert E.W.
- Hodder I.
- Hunwick J.O.
- Insoll T.
- Kamara C. M.
- Kopytoff I.
- Labat J.-B.
- Lechtman H.
- Lechtman H.
- Lemonnier P.
- Leroi-Gourhan A.
- Levtzion N.
- Lightfoot K.G.
- Lightfoot K.G.
- Livingstone Smith A.
- Livingstone Smith A.
- Mayor A.
- McIntosh S.K.
- McNaughton P.R.
- Mitchell P.J.
- N'Diaye S.O.
- Neff H.
- Ogundiran A.
- Ogundiran A.
- Park M.
- Rançon A.
- Reid A.M.
- Richard F.G.
- Richard F.G.
- Robinson D.
- Roux V.
- Sackett J.R.
- Sall M.
- Schiffer M.B.
- Schmidt P.R.
- Sinopoli C.M.
- Stahl A.B.
- Stahl A.B.
- Stahl A.B.
- Stahl A.B.
- Stahl A.B.
- Tamari T.
- Tamari T.
- Thiaw I.
- Thiaw I.
- Wiessner P.
- Wolf E.
- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
Globalization and the spread of capitalism: material resonances
- Author
- Appadurai A.
- Armitage P.
- Atkinson D.
- Bain A.
- Barker D.
- Bateman N.
- Belcher J.
- Belford P.
- Berg M.
- Bloch M.
- Bloice B.
- Boivin N.
- Bourdieu P.
- Brooks A.
- Buchli V.
- Butler L.A.S.
- Chandra N.
- Cipolla C.
- Cooper F.
- Cooper F.
- Crawford I.A.
- Crewe V.
- Crosby A.W.
- Crosby A.W.
- Crossley D.
- Croucher S.
- Dalglish C.
- Dawson D.
- De Munck B.
- Deetz J.
- Diamond J.
- Dixon J.
- Douglas M.
- Edelman M.
- Egan G.
- Ferris N.
- Flatman J.
- Fothergill T.
- Frazer B.
- Friedman T.
- Funari P.
- Gaimster D.
- Gaimster D.
- Gaimster D.
- Games A.
- Games A.
- Gosden C.
- Graves-Brown P.
- Green A.
- Hall M.
- Hatfield A.L.
- Hatfield A.L.
- Helms M.
- Hickman C.
- Hodder I.
- Horning A.
- Horning A.
- Horning A.
- Horning A.
- Horning A.
- Hoskins J.
- Johnson M.
- Johnson M.
- Killock D.
- Leone M.
- Leone M.
- Lucas G.
- Lucas R.
- Lydon J.
- MacGregor A.
- Matthews C.
- McFarlane H.
- McKendrick N.
- Miller D.
- Miller D.
- Miller D.
- Mitchell A.
- Mizoguchi K.
- Moore K.
- Morley N.
- Moshenska G.
- Moussette M.
- Mrozowski S.
- Mrozowski S.
- Mrozowski S.
- Muldrew C.
- Newman R.
- Nordin J.
- Nordin J.
- Ogundiran A.
- Olsen B.
- Orser C.
- Orser C.
- Osterhammel J.
- Oswald A.
- Pendery S.
- Pope P.
- RCAHMS
- Schmidt P.
- Schmidt P.
- Scholte J.
- Schweickart E.
- Shackel P.
- Sikes K.
- Steger M.B.
- Steger M.B.
- Straube B.
- Svizzero S.
- Symonds J.
- Tait H.
- Tarlow S.
- Taussig M.
- Vries J. de
- Wallerstein I.
- Watney B.
- Webster J.
- Wilkie L.
- Wilson R.J.
- Wrathmell S.
- Wurst L.
- Young R.
- Ă“ SiochrĂş M.
- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
The ASOS Surgical Risk Calculator: development and validation of a tool for identifying African surgical patients at risk of severe postoperative complications
- Author
- A. Abd-rouf
- A. Abduljalil
- A. Abdulrahman
- A. Abokris
- A. Abushnaf
- A. Addanfour
- A. Alatresh
- A. Alfari
- A. Alfetore
- A. Algddar
- A. Alghazali
- A. Alhendery Alhendery
- A. Ali
- A. Ali
- A. Alkilani
- A. Alli
- A. Almajbery
- A. Alsayed
- A. Anele
- A. Attia
- A. Basenero
- A. Berhe
- A. Bogoslovskiy
- A. Dasrath
- A. Dodiyi-Manuel
- A. Ehouni
- A. Elmgadmi
- A. Elshikhy
- A. Elwerfelli
- A. Feituri
- A. Gakenia
- A. Ganesh
- A. Garrido Lopez
- A. Ghnain
- A. Hdud
- A. Ibrahim Abdelatif
- A. Issoufou
- A. Jaber
- A. Juwid
- A. Khamajeet
- A. Maharaj
- A. Maharaj
- A. Mallier Peter
- A. Manneh
- A. Mansour
- A. Metali
- A. Mlotshwa
- A. Mohamed
- A. Mohamed
- A. Mohamed
- A. Mohamed
- A. Mohamed
- A. Muturi
- A. Mwale
- A. Nansook
- A. Onyegbule
- A. Prosper
- A. Rabemazava
- A. Sarkin-Pawa
- A. Shubba
- A. Sohoub
- A. Steyn
- A. Swaleh
- A. Tarhuni
- A. Thotharam
- A. Wafa
- A. Wafula
- A. Zidan
- A. Zo
- A.A. Alraheem
- A.A. Altagazi
- A.A. Aribi
- A.A. Eshwehdi
- A.A. Kornilov
- A.A. Munyika
- A.A. Sheshe
- A.A. Yahya
- A.A. Yunus
- A.A.G. Gomati
- A.B. Muhammad
- A.B. Zerihun
- A.C. Castro
- A.D. Aldarrat
- A.D. Maharaj
- A.E.T. Ayebale
- A.F.X. Agaba
- A.G.B. Andriamampionona
- A.G.L. Rocher
- A.H. Harissou
- A.H. Hery
- A.H.N. Rakotoarisoa
- A.H.R. Rakotoarijaona
- A.I. Ibrahim
- A.I. Levin
- A.I. Yahya
- A.J. Szpytko
- A.J. Vermeulen
- A.J.M. Lumbamba
- A.K. Egote
- A.K. Kintu
- A.K. Koledale
- A.L. AL Samateh
- A.L. Samateh
- A.M. Baloyi
- A.M. Elghallal
- A.M. Elghobashy
- A.M. Elzufri
- A.M. Iraya
- A.M. Kilembe
- A.M. Kukembila
- A.M. Macheka
- A.M. Mohamed
- A.M. Ngalala
- A.M. Torborg
- A.N. Kabongo
- A.N.J.D. Alberts
- A.O. Adisa
- A.O. Omigbodun
- A.O. Osinowo
- A.O. Ousseini
- A.O. Usenbo
- A.P. Gatheru
- A.P. Patience
- A.R.W. Mungherera
- A.S. Shkirban
- A.S. Singh
- A.S. Yusuf
- A.S.B. Benamour
- A.S.M. Madsen
- A.T. Robelie
- A.T.M. Masiyambiri
- A.Z. Elzoway
- A.Z. Machowski
- A.Z. Zeiton
- Abdulaziz M. Elkhogia
- Adam Hewitt-Smith
- Adams
- Ahmadou L. Samateh
- Akinyinka O. Omigbodun
- Akwasi Antwi-Kusi
- Al.-A. Amer
- Al.-J. Ahmed
- Alex M. Makupe
- Ambroise Guegni
- Amina. Kalisa
- Anatole Atomabe
- Andrew K.N. Ndonga
- Anthony R. Reed
- Apollo. Basenero
- B. Ahmed
- B. Alsellabi
- B. Chrirangi
- B. Church
- B. Dedekind
- B. Gadi
- B. Githae
- B. Kipng’etich
- B. Kiprop
- B. Lerutla
- B. Ntueba
- B. Rink
- B. Thakoor
- B. Veerasamy
- B.A. Albakosh
- B.A. Dokolwana
- B.B. Afolabi
- B.B. Osinaike
- B.B. Ryabchiy
- B.C. Businge
- B.C. Enicker
- B.E. Bilby
- B.H. Pienaar
- B.J.S. Diedericks
- B.M. Biccard
- B.M. Mabaso
- B.M. Ngari
- B.N. BN Tanjong
- B.N.K. Kaholongo
- B.O. Mofikoya
- B.O. Semo
- B.P. Thomas
- B.S. Sikombe
- B.S.G. Diale
- B.T. Amisi
- Belinda S. Kusel
- Bernard Mbwele
- Beye SeĂŻdina Alioune
- Biccard
- Biccard
- Blaise Tchaou
- Bruce M. Biccard
- Busi Mrara
- C. Bitta
- C. Chalo
- C. Changfoot
- C. Dhege
- C. Houston
- C. Kruse
- C. Lee
- C. Lionnet
- C. Manirimbere
- C. Msadabwe
- C. Nantulu
- C. Ndung’u
- C. Nnaji
- C. Ntoto
- C.A. Blake
- C.A. Roberts
- C.A.G. Smits
- C.H. Basson
- C.J. Bikuelo
- C.J.M. Mawire
- C.L.C. Lubamba
- C.M. Human
- C.M. Mwangi
- C.N. Mwaluka
- C.N. Namata
- C.R. Saaiman
- C.S. Jallow
- C.S. Sendagire
- C.S. Shambare
- C.Z. Zinyemba
- Chaibou M. Sani
- Charles Tchegnonsi
- Chris Cairns
- Christella S. Alphonsus
- Christina Salmina Gordon
- Christopher Y. Matola
- Collins
- Coulibaly Youssouf
- D. Benali
- D. Daliri
- D. Elrafifi
- D. Hugo
- D. Krick
- D. Naidoo
- D. Ndegwa
- D. Ngorora
- D. Ngouane
- D. Roytowski
- D. Tarloff
- D.E. du Plessis
- D.F. Dibwe
- D.G. Giles
- D.H. Imposo
- D.I. Uhuebor
- D.J. Van der Merwe
- D.K. Kabatoro
- D.K. Sanduku
- D.M. Adeleke
- D.M. Linyama
- D.M. Maimane
- D.M. Maluleke
- D.M. Mangoo
- D.M. Munlemvo
- D.M.A. Aurélia
- D.M.A. Randriambololona
- D.O. Ojuka
- D.P. Domoyyeri
- D.R. Bhagwandass
- D.S. Nesengani
- D.S. Sikazwe
- D.V. Manyere
- Daniel Zemenfes Ashebir
- David G. Bishop
- David Lee Skinner
- Dela A. Maiwald
- Devan. Rungan
- Diallo Gangaly
- Diango Djibo Mahamane
- Dolly M. Munlemvo
- Dominique van Dyk
- Doreen M. Mashava
- E. Atito-Narh
- E. Blignaut
- E. Chikumba
- E. Hadia
- E. Horugavye
- E. Loots
- E. Mashoko
- E. Ngatia
- E. Ninise
- E. Salaheddin
- E. Swayeb
- E.A. Alakkari
- E.A. Alzahra
- E.B. Etuk
- E.B. Holford
- E.E. Wynne
- E.F. Post
- E.K. Badianga
- E.K. Makopa
- E.M. Semenya
- E.N. Waweru
- E.O. Enendu
- E.O. Enwerem
- E.O. Ogboli-Nwasor
- E.S. al Shams
- E.S. Namegabe
- E.V. Neluheni
- Edith Djessouho
- El.-Z. Ahmed
- Ernest Nkwabi
- Estie Cloete
- Eugene Zoumenou
- F. Abuhdema
- F. Albert
- F. Alkobty Alkobty
- F. Almoraid
- F. Bigirimana
- F. Blignaut
- F. Boufas
- F. Carlos
- F. Lanos
- F. Madzimbamuto
- F. Mitema
- F. Nakandungile
- F. Ouanes
- F. Tshivhula
- F.A.M. Mohammed
- F.A.R. Razanakoto
- F.F.H. Alhoty
- F.F.H. Matoug
- F.F.H. Otman
- F.H. van der Merwe
- F.J. Rousseau
- F.K. Mariwa
- F.K. Mubeya
- F.K. Mukinda
- F.M. Chitungo
- F.M. Molokoane
- F.P. Paruk
- F.R. Rajah
- F.R. Rija
- F.S. Senusi
- F.T. Elharati
- Farai Madzimbamuto
- Felix Anani
- Fred Bulamba
- G. Ekwen
- G. Elsaadi
- G. Gerbel
- G. Mutizira
- G. Souley
- G. Steyn
- G. Yousef
- G.B. Shah
- G.C. Skinner
- G.G.N. Gama
- G.I.M. Muguti
- G.K. Kateregga
- G.K. Ngcobo
- G.N. Pengemale
- G.T. Girmaye
- G.T. Naude
- Gabriel Ndayisaba
- Gaoussou Sogoba
- Gareth L. Davies
- Guy Assoum
- H. Agilla
- H. Alobeidi
- H. Daddy
- H. Elmehdawi
- H. Eloi
- H. Holder
- H. Hurri
- H. Kanoun
- H. Mostafa
- H. Nchimunya
- H. Ramnarain
- H. Roura
- H. Salaou
- H. Schutte
- H. Steinhaus
- H.-L. Kluyts
- H.A. Algedar
- H.A. van Zyl
- H.A.M. Mwanga
- H.B. Badi
- H.B. Elmadany
- H.B. Hashmi
- H.C. Steyn
- H.E. Ramilson
- H.K. Sabwa
- H.L. Luweesi
- H.M. Ackermann
- H.M. Maakamedi
- H.M. Salisu-Kabara
- H.M.S.N. Heerah
- H.M.Z. Azzaidey
- H.N. Chifamba
- H.N. Sarah
- H.O. Nyawanda
- H.P. Mavesere
- H.T. Tshuma
- H.W. Alwahedi
- H.Z. Zentuti
- Hamza. Doles Sama
- Heidi L. Stoltenkamp
- Henry Ndasi
- Henry Zepharine
- Hippolyte Abadagan
- Hubert Dewanou
- Hyla-Louise Kluyts
- I. Akhideno
- I. Bori
- I. Buccimazza
- I. Jasim
- I. Macharia
- I. Mansour
- I. Mohammed
- I. Notoane
- I. Rois
- I.A. Alghafoud
- I.A. Udo
- I.A.R. Ike
- I.B.B. Ilunga
- I.D. Menkiti
- I.E. Elfaghi
- I.E. Elyasir
- I.E. Igaga
- I.E. Shefren
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- T.S. Alkesa
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- T.W. Munyaradzi
- T.W.A. Anabah
- Thandinkosi E. Madiba
- Theroshnie K. Kisten
- Thiam Souleymane
- Thomas Allaye
- Thuli Biyase
- Tim C. Hardcastle
- Tonya M. Esterhuizen
- Traoré Abdoulaye
- Traoré Ibrahim
- U.V. Jaganath
- Usha Singh
- Ushmaben Patel
- V. Athanse
- V. Dehal
- V. Gobin
- V. Govindasamy
- V. Makhanya
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- V. Sinoamadi
- V.E.M. Musiba
- V.K. Kusweje
- V.K. Mushangwe
- V.L. Koller
- V.L. Moses
- V.M. Gacii
- V.M. Mtongwe
- V.M.K. Kissoon
- V.N. Nziene
- V.T. Manzini
- Veekash Gobin
- W. Abozaid
- W. Conradie
- W. Kibochi
- W. Kuhn
- W. Mathangani
- W. Njuguna
- W. Rois
- W. Sam-Awortwi
- W.A.G. Simo
- W.A.P. Ras
- W.D. Mbombo
- W.M. du Plessis
- W.M.S. Mbuyi
- W.P. Kuhn
- W.P. Makhaye
- W.V.J. Koperski
- Wong
- Y. Baitchu
- Y. Coulibaly
- Y. le Manach
- Y. Mampangula
- Y. Najm
- Y. Yakubu
- Y.A. Ali
- Y.B. Adamu
- Y.B. Bwambale
- Y.B.M. Freeman
- Y.G. Gandy
- Y.M. Yangazov
- Y.Y. Kutor
- Yannick Le Manach
- Youssouf Coulibaly
- Z. Farina
- Z. Imessaoudene
- Z. Nibe
- Z. Nyatela-Akinrinmade
- Z. Rakhda
- Z.S. Elghazal
- Z.S. Jamal
- Zipporah W.W. Ngumi
- Publication venue
- 'Elsevier BV'
- Publication date
- 17/09/2018
- Field of study
Background:
The African Surgical Outcomes Study (ASOS) showed that surgical patients in Africa have a mortality twice the global average. Existing risk assessment tools are not valid for use in this population because the pattern of risk for poor outcomes differs from high-income countries. The objective of this study was to derive and validate a simple, preoperative risk stratification tool to identify African surgical patients at risk for in-hospital postoperative mortality and severe complications.
Methods:
ASOS was a 7-day prospective cohort study of adult patients undergoing surgery in Africa. The ASOS Surgical Risk Calculator was constructed with a multivariable logistic regression model for the outcome of in-hospital mortality and severe postoperative complications. The following preoperative risk factors were entered into the model; age, sex, smoking status, ASA physical status, preoperative chronic comorbid conditions, indication for surgery, urgency, severity, and type of surgery.
Results:
The model was derived from 8799 patients from 168 African hospitals. The composite outcome of severe postoperative complications and death occurred in 423/8799 (4.8%) patients. The ASOS Surgical Risk Calculator includes the following risk factors: age, ASA physical status, indication for surgery, urgency, severity, and type of surgery. The model showed good discrimination with an area under the receiver operating characteristic curve of 0.805 and good calibration with c-statistic corrected for optimism of 0.784.
Conclusions:
This simple preoperative risk calculator could be used to identify high-risk surgical patients in African hospitals and facilitate increased postoperative surveillance.
© 2018 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.Medical Research Council of South Africa gran