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)1997Q2
Neurology (clinical)1998Q1
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
Neurology (clinical)2016Q1
Physiology (medical)1997Q2
Physiology (medical)1998Q2
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
Physiology (medical)2016Q1

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)19992.511
Cites / Doc. (4 years)20003.404
Cites / Doc. (4 years)20013.809
Cites / Doc. (4 years)20023.664
Cites / Doc. (4 years)20033.989
Cites / Doc. (4 years)20044.082
Cites / Doc. (4 years)20055.465
Cites / Doc. (4 years)20065.915
Cites / Doc. (4 years)20075.767
Cites / Doc. (4 years)20086.135
Cites / Doc. (4 years)20096.877
Cites / Doc. (4 years)20107.743
Cites / Doc. (4 years)20117.434
Cites / Doc. (4 years)20127.544
Cites / Doc. (4 years)20136.884
Cites / Doc. (4 years)20146.641
Cites / Doc. (4 years)20156.011
Cites / Doc. (4 years)20165.497
Cites / Doc. (3 years)19992.511
Cites / Doc. (3 years)20003.458
Cites / Doc. (3 years)20013.545
Cites / Doc. (3 years)20023.739
Cites / Doc. (3 years)20033.191
Cites / Doc. (3 years)20044.233
Cites / Doc. (3 years)20055.476
Cites / Doc. (3 years)20066.064
Cites / Doc. (3 years)20075.641
Cites / Doc. (3 years)20085.870
Cites / Doc. (3 years)20096.625
Cites / Doc. (3 years)20107.609
Cites / Doc. (3 years)20116.916
Cites / Doc. (3 years)20126.956
Cites / Doc. (3 years)20136.483
Cites / Doc. (3 years)20146.135
Cites / Doc. (3 years)20155.769
Cites / Doc. (3 years)20165.231
Cites / Doc. (2 years)19992.356
Cites / Doc. (2 years)20002.955
Cites / Doc. (2 years)20013.548
Cites / Doc. (2 years)20022.762
Cites / Doc. (2 years)20032.984
Cites / Doc. (2 years)20044.221
Cites / Doc. (2 years)20055.365
Cites / Doc. (2 years)20065.798
Cites / Doc. (2 years)20075.150
Cites / Doc. (2 years)20085.426
Cites / Doc. (2 years)20096.272
Cites / Doc. (2 years)20106.742
Cites / Doc. (2 years)20116.346
Cites / Doc. (2 years)20126.212
Cites / Doc. (2 years)20135.755
Cites / Doc. (2 years)20145.401
Cites / Doc. (2 years)20155.160
Cites / Doc. (2 years)20164.961
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 Cites2015249
Self Cites2016283
Total Cites19991012
Total Cites20001162
Total Cites20011184
Total Cites20021275
Total Cites20031034
Total Cites20041342
Total Cites20052196
Total Cites20062759
Total Cites20072753
Total Cites20082882
Total Cites20093359
Total Cites20103858
Total Cites20113472
Total Cites20123617
Total Cites20133371
Total Cites20143399
Total Cites20153277
Total Cites20163097
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 document19992.238
External Cites per document20003.048
External Cites per document20013.272
External Cites per document20023.399
External Cites per document20032.907
External Cites per document20043.492
External Cites per document20054.885
External Cites per document20065.429
External Cites per document20075.076
External Cites per document20085.415
External Cites per document20096.063
External Cites per document20107.039
External Cites per document20116.341
External Cites per document20126.487
External Cites per document20135.862
External Cites per document20145.677
External Cites per document20155.331
External Cites per document20164.753
Cites per document19992.511
Cites per document20003.458
Cites per document20013.545
Cites per document20023.739
Cites per document20033.191
Cites per document20044.233
Cites per document20055.476
Cites per document20066.064
Cites per document20075.641
Cites per document20085.870
Cites per document20096.625
Cites per document20107.609
Cites per document20116.916
Cites per document20126.956
Cites per document20136.483
Cites per document20146.135
Cites per document20155.769
Cites per document20165.231
% 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 documents2015177
Non-citable documents2016157
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 documents2015568
Citable documents2016592
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 documents1999134
Uncited documents2000102
Uncited documents200199
Uncited documents200287
Uncited documents200378
Uncited documents200464
Uncited documents200592
Uncited documents2006143
Uncited documents2007156
Uncited documents2008149
Uncited documents200990
Uncited documents201086
Uncited documents201198
Uncited documents2012105
Uncited documents2013139
Uncited documents2014169
Uncited documents2015160
Uncited documents2016156
Cited documents1999298
Cited documents2000269
Cited documents2001270
Cited documents2002286
Cited documents2003267
Cited documents2004292
Cited documents2005386
Cited documents2006459
Cited documents2007495
Cited documents2008486
Cited documents2009519
Cited documents2010517
Cited documents2011529
Cited documents2012560
Cited documents2013553
Cited documents2014570
Cited documents2015585
Cited documents2016593
Scimago Journal & Country Rank
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