Scimago Journal & Country Rank


CountryUnited States
H Index
Subject Area and CategoryMedicine
Neurology (clinical)
Physiology (medical)
PublisherThe American Academy of Sleep Medicine
Publication typeJournals
Scope SLEEP is the official publication of the Associated Professional Sleep Societies, LLC (APSS) a joint venture of the American Academy of Sleep Medicine and the Sleep Research Society. Primary readers are scientists engaged in the study of sleep and its disorders, and clinicians practicing sleep disorders medicine. (source)

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Neurology (clinical)1999Q1
Neurology (clinical)2000Q1
Neurology (clinical)2001Q1
Neurology (clinical)2002Q1
Neurology (clinical)2003Q1
Neurology (clinical)2004Q1
Neurology (clinical)2005Q1
Neurology (clinical)2006Q1
Neurology (clinical)2007Q1
Neurology (clinical)2008Q1
Neurology (clinical)2009Q1
Neurology (clinical)2010Q1
Neurology (clinical)2011Q1
Neurology (clinical)2012Q1
Neurology (clinical)2013Q1
Neurology (clinical)2014Q1
Neurology (clinical)2015Q1
Physiology (medical)1999Q1
Physiology (medical)2000Q1
Physiology (medical)2001Q1
Physiology (medical)2002Q1
Physiology (medical)2003Q2
Physiology (medical)2004Q1
Physiology (medical)2005Q1
Physiology (medical)2006Q1
Physiology (medical)2007Q1
Physiology (medical)2008Q1
Physiology (medical)2009Q1
Physiology (medical)2010Q1
Physiology (medical)2011Q1
Physiology (medical)2012Q1
Physiology (medical)2013Q1
Physiology (medical)2014Q1
Physiology (medical)2015Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19992.496
Cites / Doc. (4 years)20003.385
Cites / Doc. (4 years)20013.788
Cites / Doc. (4 years)20023.647
Cites / Doc. (4 years)20033.943
Cites / Doc. (4 years)20044.073
Cites / Doc. (4 years)20055.455
Cites / Doc. (4 years)20065.806
Cites / Doc. (4 years)20075.755
Cites / Doc. (4 years)20086.113
Cites / Doc. (4 years)20096.857
Cites / Doc. (4 years)20107.595
Cites / Doc. (4 years)20117.290
Cites / Doc. (4 years)20127.482
Cites / Doc. (4 years)20136.802
Cites / Doc. (4 years)20146.516
Cites / Doc. (4 years)20155.663
Cites / Doc. (3 years)19992.496
Cites / Doc. (3 years)20003.443
Cites / Doc. (3 years)20013.524
Cites / Doc. (3 years)20023.718
Cites / Doc. (3 years)20033.164
Cites / Doc. (3 years)20044.230
Cites / Doc. (3 years)20055.464
Cites / Doc. (3 years)20065.952
Cites / Doc. (3 years)20075.635
Cites / Doc. (3 years)20085.849
Cites / Doc. (3 years)20096.613
Cites / Doc. (3 years)20107.458
Cites / Doc. (3 years)20116.829
Cites / Doc. (3 years)20126.898
Cites / Doc. (3 years)20136.398
Cites / Doc. (3 years)20146.020
Cites / Doc. (3 years)20155.418
Cites / Doc. (2 years)19992.342
Cites / Doc. (2 years)20002.944
Cites / Doc. (2 years)20013.524
Cites / Doc. (2 years)20022.749
Cites / Doc. (2 years)20032.952
Cites / Doc. (2 years)20044.217
Cites / Doc. (2 years)20055.352
Cites / Doc. (2 years)20065.696
Cites / Doc. (2 years)20075.144
Cites / Doc. (2 years)20085.415
Cites / Doc. (2 years)20096.270
Cites / Doc. (2 years)20106.602
Cites / Doc. (2 years)20116.272
Cites / Doc. (2 years)20126.168
Cites / Doc. (2 years)20135.700
Cites / Doc. (2 years)20145.301
Cites / Doc. (2 years)20154.892
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites1999110
Self Cites2000138
Self Cites200191
Self Cites2002116
Self Cites200392
Self Cites2004235
Self Cites2005237
Self Cites2006289
Self Cites2007276
Self Cites2008223
Self Cites2009285
Self Cites2010289
Self Cites2011289
Self Cites2012244
Self Cites2013323
Self Cites2014254
Self Cites2015246
Total Cites19991006
Total Cites20001157
Total Cites20011177
Total Cites20021268
Total Cites20031025
Total Cites20041341
Total Cites20052191
Total Cites20062708
Total Cites20072750
Total Cites20082872
Total Cites20093353
Total Cites20103781
Total Cites20113428
Total Cites20123587
Total Cites20133327
Total Cites20143335
Total Cites20153083
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document19992.223
External Cites per document20003.033
External Cites per document20013.251
External Cites per document20023.378
External Cites per document20032.880
External Cites per document20043.489
External Cites per document20054.873
External Cites per document20065.316
External Cites per document20075.070
External Cites per document20085.395
External Cites per document20096.051
External Cites per document20106.888
External Cites per document20116.253
External Cites per document20126.429
External Cites per document20135.777
External Cites per document20145.561
External Cites per document20154.986
Cites per document19992.496
Cites per document20003.443
Cites per document20013.524
Cites per document20023.718
Cites per document20033.164
Cites per document20044.230
Cites per document20055.464
Cites per document20065.952
Cites per document20075.635
Cites per document20085.849
Cites per document20096.613
Cites per document20107.458
Cites per document20116.829
Cites per document20126.898
Cites per document20136.398
Cites per document20146.020
Cites per document20155.418
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents199929
Non-citable documents200035
Non-citable documents200135
Non-citable documents200232
Non-citable documents200321
Non-citable documents200439
Non-citable documents200577
Non-citable documents2006147
Non-citable documents2007163
Non-citable documents2008144
Non-citable documents2009102
Non-citable documents201096
Non-citable documents2011125
Non-citable documents2012145
Non-citable documents2013172
Non-citable documents2014185
Non-citable documents2015176
Citable documents1999403
Citable documents2000336
Citable documents2001334
Citable documents2002341
Citable documents2003324
Citable documents2004317
Citable documents2005401
Citable documents2006455
Citable documents2007488
Citable documents2008491
Citable documents2009507
Citable documents2010507
Citable documents2011502
Citable documents2012520
Citable documents2013520
Citable documents2014554
Citable documents2015569
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents1999135
Uncited documents2000103
Uncited documents200199
Uncited documents200287
Uncited documents200378
Uncited documents200464
Uncited documents200592
Uncited documents2006144
Uncited documents2007156
Uncited documents2008149
Uncited documents200990
Uncited documents201088
Uncited documents2011100
Uncited documents2012105
Uncited documents2013141
Uncited documents2014173
Uncited documents2015166
Cited documents1999297
Cited documents2000268
Cited documents2001270
Cited documents2002286
Cited documents2003267
Cited documents2004292
Cited documents2005386
Cited documents2006458
Cited documents2007495
Cited documents2008486
Cited documents2009519
Cited documents2010515
Cited documents2011527
Cited documents2012560
Cited documents2013551
Cited documents2014566
Cited documents2015579
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