University of Sierra Leone

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Short name

USL

Country, city

Sierra Leone, Freetown

045rztm55

Organization website

Publications

847

Citations

16 792

h-index

Top-3 journals

BMJ Global Health (19 publications)

BMJ Open (16 publications)

BMC Public Health (14 publications)

Top-3 organizations

London School of Hygiene & Tropical Medicine (67 publications)

King's College London (51 publications)

Njala University (47 publications)

Top-3 foreign organizations

London School of Hygiene & Tropical Medicine (67 publications)

King's College London (51 publications)

Johns Hopkins University (43 publications)

Most cited in 5 years

Found

Publication title

Publisher

Journal

Countries

Found

Since 1966

Total publications

847

Total citations

16792

Citations per publication

19.83

Average publications per year

14.12

Average authors per publication

13.07

h-index

Metrics description

h-index

A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

Top-30

Fields of science

	20 40 60 80 100 120
Public Health, Environmental and Occupational Health	Public Health, Environmental and Occupational Health, 118, 13.93% Public Health, Environmental and Occupational Health 118 publications, 13.93%
General Medicine	General Medicine, 108, 12.75% General Medicine 108 publications, 12.75%
Infectious Diseases	Infectious Diseases, 106, 12.51% Infectious Diseases 106 publications, 12.51%
Health Policy	Health Policy, 55, 6.49% Health Policy 55 publications, 6.49%
Ecology, Evolution, Behavior and Systematics	Ecology, Evolution, Behavior and Systematics, 34, 4.01% Ecology, Evolution, Behavior and Systematics 34 publications, 4.01%
Multidisciplinary	Multidisciplinary, 29, 3.42% Multidisciplinary 29 publications, 3.42%
Parasitology	Parasitology, 26, 3.07% Parasitology 26 publications, 3.07%
Pharmacology (medical)	Pharmacology (medical), 24, 2.83% Pharmacology (medical) 24 publications, 2.83%
Surgery	Surgery, 19, 2.24% Surgery 19 publications, 2.24%
Virology	Virology, 19, 2.24% Virology 19 publications, 2.24%
Microbiology (medical)	Microbiology (medical), 18, 2.13% Microbiology (medical) 18 publications, 2.13%
Sociology and Political Science	Sociology and Political Science, 18, 2.13% Sociology and Political Science 18 publications, 2.13%
Geography, Planning and Development	Geography, Planning and Development, 18, 2.13% Geography, Planning and Development 18 publications, 2.13%
Management, Monitoring, Policy and Law	Management, Monitoring, Policy and Law, 18, 2.13% Management, Monitoring, Policy and Law 18 publications, 2.13%
General Immunology and Microbiology	General Immunology and Microbiology, 17, 2.01% General Immunology and Microbiology 17 publications, 2.01%
Health (social science)	Health (social science), 17, 2.01% Health (social science) 17 publications, 2.01%
Library and Information Sciences	Library and Information Sciences, 16, 1.89% Library and Information Sciences 16 publications, 1.89%
Immunology and Allergy	Immunology and Allergy, 16, 1.89% Immunology and Allergy 16 publications, 1.89%
Pharmacology	Pharmacology, 15, 1.77% Pharmacology 15 publications, 1.77%
General Materials Science	General Materials Science, 14, 1.65% General Materials Science 14 publications, 1.65%
Aquatic Science	Aquatic Science, 14, 1.65% Aquatic Science 14 publications, 1.65%
History	History, 14, 1.65% History 14 publications, 1.65%
General Biochemistry, Genetics and Molecular Biology	General Biochemistry, Genetics and Molecular Biology, 12, 1.42% General Biochemistry, Genetics and Molecular Biology 12 publications, 1.42%
Genetics	Genetics, 12, 1.42% Genetics 12 publications, 1.42%
Health, Toxicology and Mutagenesis	Health, Toxicology and Mutagenesis, 12, 1.42% Health, Toxicology and Mutagenesis 12 publications, 1.42%
General Environmental Science	General Environmental Science, 12, 1.42% General Environmental Science 12 publications, 1.42%
Development	Development, 12, 1.42% Development 12 publications, 1.42%
Ecology	Ecology, 11, 1.3% Ecology 11 publications, 1.3%
Geology	Geology, 11, 1.3% Geology 11 publications, 1.3%
Medicine (miscellaneous)	Medicine (miscellaneous), 10, 1.18% Medicine (miscellaneous) 10 publications, 1.18%
	20 40 60 80 100 120

Journals

	2 4 6 8 10 12 14 16 18 20
BMJ Global Health	BMJ Global Health, 19, 2.24% BMJ Global Health 19 publications, 2.24%
BMJ Open	BMJ Open, 16, 1.89% BMJ Open 16 publications, 1.89%
BMC Public Health	BMC Public Health, 14, 1.65% BMC Public Health 14 publications, 1.65%
Tropical Medicine and Infectious Disease	Tropical Medicine and Infectious Disease, 13, 1.53% Tropical Medicine and Infectious Disease 13 publications, 1.53%
The Lancet	The Lancet, 12, 1.42% The Lancet 12 publications, 1.42%
SSRN Electronic Journal	SSRN Electronic Journal, 12, 1.42% SSRN Electronic Journal 12 publications, 1.42%
Nature	Nature, 11, 1.3% Nature 11 publications, 1.3%
Journal of Infectious Diseases	Journal of Infectious Diseases, 11, 1.3% Journal of Infectious Diseases 11 publications, 1.3%
PLoS ONE	PLoS ONE, 11, 1.3% PLoS ONE 11 publications, 1.3%
American Journal of Tropical Medicine and Hygiene	American Journal of Tropical Medicine and Hygiene, 10, 1.18% American Journal of Tropical Medicine and Hygiene 10 publications, 1.18%
BMC Health Services Research	BMC Health Services Research, 10, 1.18% BMC Health Services Research 10 publications, 1.18%
BMC Infectious Diseases	BMC Infectious Diseases, 10, 1.18% BMC Infectious Diseases 10 publications, 1.18%
The Lancet Infectious Diseases	The Lancet Infectious Diseases, 8, 0.94% The Lancet Infectious Diseases 8 publications, 0.94%
Public Health Challenges	Public Health Challenges, 8, 0.94% Public Health Challenges 8 publications, 0.94%
International Journal of Environmental Research and Public Health	International Journal of Environmental Research and Public Health, 7, 0.83% International Journal of Environmental Research and Public Health 7 publications, 0.83%
International Journal of Infectious Diseases	International Journal of Infectious Diseases, 6, 0.71% International Journal of Infectious Diseases 6 publications, 0.71%
Health Policy and Planning	Health Policy and Planning, 6, 0.71% Health Policy and Planning 6 publications, 0.71%
Global Public Health	Global Public Health, 6, 0.71% Global Public Health 6 publications, 0.71%
Conflict and Health	Conflict and Health, 6, 0.71% Conflict and Health 6 publications, 0.71%
PLoS Neglected Tropical Diseases	PLoS Neglected Tropical Diseases, 6, 0.71% PLoS Neglected Tropical Diseases 6 publications, 0.71%
Journal of Zoology	Journal of Zoology, 6, 0.71% Journal of Zoology 6 publications, 0.71%
Library Review	Library Review, 6, 0.71% Library Review 6 publications, 0.71%
Malaria Journal	Malaria Journal, 5, 0.59% Malaria Journal 5 publications, 0.59%
Canadian Journal of African Studies	Canadian Journal of African Studies, 5, 0.59% Canadian Journal of African Studies 5 publications, 0.59%
Tropical Medicine and International Health	Tropical Medicine and International Health, 5, 0.59% Tropical Medicine and International Health 5 publications, 0.59%
PLOS Global Public Health	PLOS Global Public Health, 5, 0.59% PLOS Global Public Health 5 publications, 0.59%
Annals of Botany	Annals of Botany, 4, 0.47% Annals of Botany 4 publications, 0.47%
Surgery (US)	Surgery (US), 4, 0.47% Surgery (US) 4 publications, 0.47%
International Journal of Stroke	International Journal of Stroke, 4, 0.47% International Journal of Stroke 4 publications, 0.47%
Mathematical Problems in Engineering	Mathematical Problems in Engineering, 4, 0.47% Mathematical Problems in Engineering 4 publications, 0.47%
	2 4 6 8 10 12 14 16 18 20

Publishers

	20 40 60 80 100 120 140 160 180 200
Springer Nature	Springer Nature, 193, 22.79% Springer Nature 193 publications, 22.79%
Elsevier	Elsevier, 161, 19.01% Elsevier 161 publications, 19.01%
Taylor & Francis	Taylor & Francis, 73, 8.62% Taylor & Francis 73 publications, 8.62%
Wiley	Wiley, 61, 7.2% Wiley 61 publications, 7.2%
MDPI	MDPI, 54, 6.38% MDPI 54 publications, 6.38%
Oxford University Press	Oxford University Press, 45, 5.31% Oxford University Press 45 publications, 5.31%
BMJ	BMJ, 42, 4.96% BMJ 42 publications, 4.96%
SAGE	SAGE, 30, 3.54% SAGE 30 publications, 3.54%
Public Library of Science (PLoS)	Public Library of Science (PLoS), 25, 2.95% Public Library of Science (PLoS) 25 publications, 2.95%
Cambridge University Press	Cambridge University Press, 19, 2.24% Cambridge University Press 19 publications, 2.24%
Hindawi Limited	Hindawi Limited, 16, 1.89% Hindawi Limited 16 publications, 1.89%
American Society of Tropical Medicine and Hygiene	American Society of Tropical Medicine and Hygiene, 10, 1.18% American Society of Tropical Medicine and Hygiene 10 publications, 1.18%
Frontiers Media S.A.	Frontiers Media S.A., 9, 1.06% Frontiers Media S.A. 9 publications, 1.06%
Social Science Electronic Publishing	Social Science Electronic Publishing, 9, 1.06% Social Science Electronic Publishing 9 publications, 1.06%
Emerald	Emerald, 7, 0.83% Emerald 7 publications, 0.83%
Ovid Technologies (Wolters Kluwer Health)	Ovid Technologies (Wolters Kluwer Health), 7, 0.83% Ovid Technologies (Wolters Kluwer Health) 7 publications, 0.83%
AMO Publisher	AMO Publisher, 6, 0.71% AMO Publisher 6 publications, 0.71%
F1000 Research	F1000 Research, 5, 0.59% F1000 Research 5 publications, 0.59%
American Chemical Society (ACS)	American Chemical Society (ACS), 4, 0.47% American Chemical Society (ACS) 4 publications, 0.47%
John Benjamins Publishing Company	John Benjamins Publishing Company, 4, 0.47% John Benjamins Publishing Company 4 publications, 0.47%
Brill	Brill, 4, 0.47% Brill 4 publications, 0.47%
International Union Against Tuberculosis and Lung Disease	International Union Against Tuberculosis and Lung Disease, 4, 0.47% International Union Against Tuberculosis and Lung Disease 4 publications, 0.47%
AIP Publishing	AIP Publishing, 3, 0.35% AIP Publishing 3 publications, 0.35%
IWA Publishing	IWA Publishing, 3, 0.35% IWA Publishing 3 publications, 0.35%
IOP Publishing	IOP Publishing, 3, 0.35% IOP Publishing 3 publications, 0.35%
American Medical Association (AMA)	American Medical Association (AMA), 3, 0.35% American Medical Association (AMA) 3 publications, 0.35%
Academic Journals	Academic Journals, 3, 0.35% Academic Journals 3 publications, 0.35%
Ubiquity Press	Ubiquity Press, 3, 0.35% Ubiquity Press 3 publications, 0.35%
Georg Thieme Verlag KG	Georg Thieme Verlag KG, 2, 0.24% Georg Thieme Verlag KG 2 publications, 0.24%
American Society for Microbiology	American Society for Microbiology, 2, 0.24% American Society for Microbiology 2 publications, 0.24%
	20 40 60 80 100 120 140 160 180 200

With other organizations

	10 20 30 40 50 60 70
London School of Hygiene & Tropical Medicine	London School of Hygiene & Tropical Medicine, 67, 7.91% London School of Hygiene & Tropical Medicine 67 publications, 7.91%
King's College London	King's College London, 51, 6.02% King's College London 51 publications, 6.02%
Njala University	Njala University, 47, 5.55% Njala University 47 publications, 5.55%
Johns Hopkins University	Johns Hopkins University, 43, 5.08% Johns Hopkins University 43 publications, 5.08%
Queen Margaret University	Queen Margaret University, 36, 4.25% Queen Margaret University 36 publications, 4.25%
University of Ibadan	University of Ibadan, 35, 4.13% University of Ibadan 35 publications, 4.13%
Case Western Reserve University	Case Western Reserve University, 33, 3.9% Case Western Reserve University 33 publications, 3.9%
Liverpool School of Tropical Medicine	Liverpool School of Tropical Medicine, 31, 3.66% Liverpool School of Tropical Medicine 31 publications, 3.66%
Southern Cross University	Southern Cross University, 28, 3.31% Southern Cross University 28 publications, 3.31%
University of the Witwatersrand	University of the Witwatersrand, 28, 3.31% University of the Witwatersrand 28 publications, 3.31%
Tulane University	Tulane University, 27, 3.19% Tulane University 27 publications, 3.19%
Centers for Disease Control and Prevention	Centers for Disease Control and Prevention, 27, 3.19% Centers for Disease Control and Prevention 27 publications, 3.19%
University of Oxford	University of Oxford, 25, 2.95% University of Oxford 25 publications, 2.95%
Makerere University	Makerere University, 25, 2.95% Makerere University 25 publications, 2.95%
University College Hospital, Ibadan	University College Hospital, Ibadan, 23, 2.72% University College Hospital, Ibadan 23 publications, 2.72%
Kwame Nkrumah University of Science and Technology	Kwame Nkrumah University of Science and Technology, 23, 2.72% Kwame Nkrumah University of Science and Technology 23 publications, 2.72%
Karolinska Institute	Karolinska Institute, 20, 2.36% Karolinska Institute 20 publications, 2.36%
University of Technology Sydney	University of Technology Sydney, 20, 2.36% University of Technology Sydney 20 publications, 2.36%
University of Cape Town	University of Cape Town, 20, 2.36% University of Cape Town 20 publications, 2.36%
Harvard University	Harvard University, 20, 2.36% Harvard University 20 publications, 2.36%
Imperial College London	Imperial College London, 19, 2.24% Imperial College London 19 publications, 2.24%
Norwegian University of Science and Technology	Norwegian University of Science and Technology, 18, 2.13% Norwegian University of Science and Technology 18 publications, 2.13%
St Olav's University Hospital	St Olav's University Hospital, 17, 2.01% St Olav's University Hospital 17 publications, 2.01%
University of Birmingham	University of Birmingham, 17, 2.01% University of Birmingham 17 publications, 2.01%
University of Edinburgh	University of Edinburgh, 16, 1.89% University of Edinburgh 16 publications, 1.89%
University of Glasgow	University of Glasgow, 16, 1.89% University of Glasgow 16 publications, 1.89%
University of Washington	University of Washington, 16, 1.89% University of Washington 16 publications, 1.89%
University of Ghana	University of Ghana, 15, 1.77% University of Ghana 15 publications, 1.77%
University of Basel	University of Basel, 14, 1.65% University of Basel 14 publications, 1.65%
Swiss Tropical and Public Health Institute	Swiss Tropical and Public Health Institute, 14, 1.65% Swiss Tropical and Public Health Institute 14 publications, 1.65%
	10 20 30 40 50 60 70

With foreign organizations

	10 20 30 40 50 60 70
London School of Hygiene & Tropical Medicine	London School of Hygiene & Tropical Medicine, 67, 7.91% London School of Hygiene & Tropical Medicine 67 publications, 7.91%
King's College London	King's College London, 51, 6.02% King's College London 51 publications, 6.02%
Johns Hopkins University	Johns Hopkins University, 43, 5.08% Johns Hopkins University 43 publications, 5.08%
Queen Margaret University	Queen Margaret University, 36, 4.25% Queen Margaret University 36 publications, 4.25%
University of Ibadan	University of Ibadan, 35, 4.13% University of Ibadan 35 publications, 4.13%
Case Western Reserve University	Case Western Reserve University, 33, 3.9% Case Western Reserve University 33 publications, 3.9%
Liverpool School of Tropical Medicine	Liverpool School of Tropical Medicine, 31, 3.66% Liverpool School of Tropical Medicine 31 publications, 3.66%
Southern Cross University	Southern Cross University, 28, 3.31% Southern Cross University 28 publications, 3.31%
University of the Witwatersrand	University of the Witwatersrand, 28, 3.31% University of the Witwatersrand 28 publications, 3.31%
Tulane University	Tulane University, 27, 3.19% Tulane University 27 publications, 3.19%
Centers for Disease Control and Prevention	Centers for Disease Control and Prevention, 27, 3.19% Centers for Disease Control and Prevention 27 publications, 3.19%
University of Oxford	University of Oxford, 25, 2.95% University of Oxford 25 publications, 2.95%
Makerere University	Makerere University, 25, 2.95% Makerere University 25 publications, 2.95%
University College Hospital, Ibadan	University College Hospital, Ibadan, 23, 2.72% University College Hospital, Ibadan 23 publications, 2.72%
Kwame Nkrumah University of Science and Technology	Kwame Nkrumah University of Science and Technology, 23, 2.72% Kwame Nkrumah University of Science and Technology 23 publications, 2.72%
Karolinska Institute	Karolinska Institute, 20, 2.36% Karolinska Institute 20 publications, 2.36%
University of Technology Sydney	University of Technology Sydney, 20, 2.36% University of Technology Sydney 20 publications, 2.36%
University of Cape Town	University of Cape Town, 20, 2.36% University of Cape Town 20 publications, 2.36%
Harvard University	Harvard University, 20, 2.36% Harvard University 20 publications, 2.36%
Imperial College London	Imperial College London, 19, 2.24% Imperial College London 19 publications, 2.24%
Norwegian University of Science and Technology	Norwegian University of Science and Technology, 18, 2.13% Norwegian University of Science and Technology 18 publications, 2.13%
St Olav's University Hospital	St Olav's University Hospital, 17, 2.01% St Olav's University Hospital 17 publications, 2.01%
University of Birmingham	University of Birmingham, 17, 2.01% University of Birmingham 17 publications, 2.01%
University of Edinburgh	University of Edinburgh, 16, 1.89% University of Edinburgh 16 publications, 1.89%
University of Glasgow	University of Glasgow, 16, 1.89% University of Glasgow 16 publications, 1.89%
University of Washington	University of Washington, 16, 1.89% University of Washington 16 publications, 1.89%
University of Ghana	University of Ghana, 15, 1.77% University of Ghana 15 publications, 1.77%
University of Basel	University of Basel, 14, 1.65% University of Basel 14 publications, 1.65%
Swiss Tropical and Public Health Institute	Swiss Tropical and Public Health Institute, 14, 1.65% Swiss Tropical and Public Health Institute 14 publications, 1.65%
University of Lagos	University of Lagos, 14, 1.65% University of Lagos 14 publications, 1.65%
	10 20 30 40 50 60 70

With other countries

	50 100 150 200 250
United Kingdom	United Kingdom, 250, 29.52% United Kingdom 250 publications, 29.52%
USA	USA, 179, 21.13% USA 179 publications, 21.13%
Nigeria	Nigeria, 91, 10.74% Nigeria 91 publications, 10.74%
China	China, 65, 7.67% China 65 publications, 7.67%
Australia	Australia, 62, 7.32% Australia 62 publications, 7.32%
Ghana	Ghana, 57, 6.73% Ghana 57 publications, 6.73%
South Africa	South Africa, 55, 6.49% South Africa 55 publications, 6.49%
Netherlands	Netherlands, 42, 4.96% Netherlands 42 publications, 4.96%
Uganda	Uganda, 42, 4.96% Uganda 42 publications, 4.96%
Switzerland	Switzerland, 42, 4.96% Switzerland 42 publications, 4.96%
Sweden	Sweden, 42, 4.96% Sweden 42 publications, 4.96%
Germany	Germany, 40, 4.72% Germany 40 publications, 4.72%
Kenya	Kenya, 40, 4.72% Kenya 40 publications, 4.72%
France	France, 39, 4.6% France 39 publications, 4.6%
India	India, 31, 3.66% India 31 publications, 3.66%
Norway	Norway, 26, 3.07% Norway 26 publications, 3.07%
Italy	Italy, 25, 2.95% Italy 25 publications, 2.95%
Canada	Canada, 25, 2.95% Canada 25 publications, 2.95%
Spain	Spain, 21, 2.48% Spain 21 publications, 2.48%
Malawi	Malawi, 21, 2.48% Malawi 21 publications, 2.48%
Ethiopia	Ethiopia, 21, 2.48% Ethiopia 21 publications, 2.48%
Tanzania	Tanzania, 20, 2.36% Tanzania 20 publications, 2.36%
Belgium	Belgium, 19, 2.24% Belgium 19 publications, 2.24%
Rwanda	Rwanda, 17, 2.01% Rwanda 17 publications, 2.01%
Brazil	Brazil, 16, 1.89% Brazil 16 publications, 1.89%
Cameroon	Cameroon, 16, 1.89% Cameroon 16 publications, 1.89%
Liberia	Liberia, 16, 1.89% Liberia 16 publications, 1.89%
Mozambique	Mozambique, 16, 1.89% Mozambique 16 publications, 1.89%
Saudi Arabia	Saudi Arabia, 16, 1.89% Saudi Arabia 16 publications, 1.89%
	50 100 150 200 250

We do not take into account publications without a DOI.
Statistics recalculated daily.
Publications published earlier than 1966 are ignored in the statistics.
The horizontal charts show the 30 top positions.
Journals quartiles values are relevant at the moment.