Scimago Journal & Country Rank

Placenta

CountryUnited Kingdom
103
H Index
Subject Area and CategoryBiochemistry, Genetics and Molecular Biology
Developmental Biology

Medicine
Obstetrics and Gynecology
Reproductive Medicine
PublisherW. B. Saunders Co., Ltd.
Publication typeJournals
ISSN01434004
Coverage1977, 1980-ongoing
Scope Placenta is the International forum providing up to the minute information on all scientific and clinical investigations pertaining to placental research and their applications. The journal includes full length and mini reviews, original articles, book reviews, announcements and reports, abstracts of important meetings and scientific letters to the Editor. (source)
Quartiles

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.

CategoryYearQuartile
Developmental Biology1997Q2
Developmental Biology1998Q2
Developmental Biology1999Q2
Developmental Biology2000Q2
Developmental Biology2001Q2
Developmental Biology2002Q2
Developmental Biology2003Q2
Developmental Biology2004Q2
Developmental Biology2005Q2
Developmental Biology2006Q2
Developmental Biology2007Q2
Developmental Biology2008Q2
Developmental Biology2009Q2
Developmental Biology2010Q2
Developmental Biology2011Q2
Developmental Biology2012Q2
Developmental Biology2013Q2
Developmental Biology2014Q2
Developmental Biology2015Q2
Developmental Biology2016Q2
Obstetrics and Gynecology1997Q1
Obstetrics and Gynecology1998Q1
Obstetrics and Gynecology1999Q1
Obstetrics and Gynecology2000Q1
Obstetrics and Gynecology2001Q1
Obstetrics and Gynecology2002Q1
Obstetrics and Gynecology2003Q1
Obstetrics and Gynecology2004Q1
Obstetrics and Gynecology2005Q1
Obstetrics and Gynecology2006Q1
Obstetrics and Gynecology2007Q1
Obstetrics and Gynecology2008Q1
Obstetrics and Gynecology2009Q1
Obstetrics and Gynecology2010Q1
Obstetrics and Gynecology2011Q1
Obstetrics and Gynecology2012Q1
Obstetrics and Gynecology2013Q1
Obstetrics and Gynecology2014Q1
Obstetrics and Gynecology2015Q1
Obstetrics and Gynecology2016Q1
Reproductive Medicine1997Q1
Reproductive Medicine1998Q1
Reproductive Medicine1999Q1
Reproductive Medicine2000Q1
Reproductive Medicine2001Q1
Reproductive Medicine2002Q1
Reproductive Medicine2003Q1
Reproductive Medicine2004Q1
Reproductive Medicine2005Q1
Reproductive Medicine2006Q1
Reproductive Medicine2007Q1
Reproductive Medicine2008Q1
Reproductive Medicine2009Q1
Reproductive Medicine2010Q1
Reproductive Medicine2011Q1
Reproductive Medicine2012Q1
Reproductive Medicine2013Q1
Reproductive Medicine2014Q1
Reproductive Medicine2015Q1
Reproductive Medicine2016Q1
SJR

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.

YearSJR
19990.781
20000.890
20010.882
20020.883
20030.998
20041.220
20051.460
20061.533
20071.317
20081.208
20091.146
20101.291
20111.430
20121.385
20131.645
20141.407
20151.609
20161.356
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)19991.852
Cites / Doc. (4 years)20002.383
Cites / Doc. (4 years)20012.401
Cites / Doc. (4 years)20022.345
Cites / Doc. (4 years)20032.961
Cites / Doc. (4 years)20042.935
Cites / Doc. (4 years)20052.982
Cites / Doc. (4 years)20063.743
Cites / Doc. (4 years)20073.369
Cites / Doc. (4 years)20083.105
Cites / Doc. (4 years)20093.162
Cites / Doc. (4 years)20103.407
Cites / Doc. (4 years)20113.790
Cites / Doc. (4 years)20123.957
Cites / Doc. (4 years)20134.031
Cites / Doc. (4 years)20143.450
Cites / Doc. (4 years)20153.395
Cites / Doc. (4 years)20163.039
Cites / Doc. (3 years)19991.852
Cites / Doc. (3 years)20002.215
Cites / Doc. (3 years)20012.358
Cites / Doc. (3 years)20022.468
Cites / Doc. (3 years)20033.019
Cites / Doc. (3 years)20042.992
Cites / Doc. (3 years)20053.240
Cites / Doc. (3 years)20063.546
Cites / Doc. (3 years)20073.335
Cites / Doc. (3 years)20083.162
Cites / Doc. (3 years)20093.046
Cites / Doc. (3 years)20103.342
Cites / Doc. (3 years)20113.990
Cites / Doc. (3 years)20123.964
Cites / Doc. (3 years)20133.929
Cites / Doc. (3 years)20143.296
Cites / Doc. (3 years)20153.319
Cites / Doc. (3 years)20162.910
Cites / Doc. (2 years)19991.606
Cites / Doc. (2 years)20002.185
Cites / Doc. (2 years)20012.505
Cites / Doc. (2 years)20022.392
Cites / Doc. (2 years)20032.870
Cites / Doc. (2 years)20043.023
Cites / Doc. (2 years)20052.982
Cites / Doc. (2 years)20063.162
Cites / Doc. (2 years)20073.301
Cites / Doc. (2 years)20082.935
Cites / Doc. (2 years)20092.974
Cites / Doc. (2 years)20103.383
Cites / Doc. (2 years)20114.094
Cites / Doc. (2 years)20123.731
Cites / Doc. (2 years)20133.608
Cites / Doc. (2 years)20143.047
Cites / Doc. (2 years)20153.178
Cites / Doc. (2 years)20162.770
Total Cites 
Self-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.

CitesYearValue
Self Cites199972
Self Cites2000152
Self Cites2001151
Self Cites2002143
Self Cites2003190
Self Cites2004159
Self Cites2005149
Self Cites2006187
Self Cites2007203
Self Cites2008187
Self Cites2009229
Self Cites2010229
Self Cites2011247
Self Cites2012277
Self Cites2013276
Self Cites2014222
Self Cites2015220
Self Cites2016188
Total Cites1999513
Total Cites2000618
Total Cites2001757
Total Cites2002854
Total Cites20031117
Total Cites20041173
Total Cites20051241
Total Cites20061376
Total Cites20071304
Total Cites20081429
Total Cites20091529
Total Cites20101711
Total Cites20112023
Total Cites20122192
Total Cites20132259
Total Cites20142024
Total Cites20151948
Total Cites20161775
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.

CitesYearValue
External Cites per document19991.592
External Cites per document20001.670
External Cites per document20011.888
External Cites per document20022.055
External Cites per document20032.505
External Cites per document20042.587
External Cites per document20052.851
External Cites per document20063.064
External Cites per document20072.816
External Cites per document20082.748
External Cites per document20092.590
External Cites per document20102.895
External Cites per document20113.503
External Cites per document20123.463
External Cites per document20133.449
External Cites per document20142.935
External Cites per document20152.944
External Cites per document20162.602
Cites per document19991.852
Cites per document20002.215
Cites per document20012.358
Cites per document20022.468
Cites per document20033.019
Cites per document20042.992
Cites per document20053.240
Cites per document20063.546
Cites per document20073.335
Cites per document20083.162
Cites per document20093.046
Cites per document20103.342
Cites per document20113.990
Cites per document20123.964
Cites per document20133.929
Cites per document20143.296
Cites per document20153.319
Cites per document20162.910
% 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
199912.36
200023.91
200122.79
200228.21
200323.35
200437.30
200526.83
200631.52
200728.57
200825.28
200920.34
201025.65
201132.46
201222.93
201323.42
201427.80
201526.61
201620.50
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.

DocumentsYearValue
Non-citable documents199916
Non-citable documents200014
Non-citable documents200115
Non-citable documents200217
Non-citable documents200321
Non-citable documents200428
Non-citable documents200527
Non-citable documents200628
Non-citable documents200723
Non-citable documents200825
Non-citable documents200930
Non-citable documents201032
Non-citable documents201139
Non-citable documents201243
Non-citable documents201349
Non-citable documents201441
Non-citable documents201545
Non-citable documents201635
Citable documents1999277
Citable documents2000279
Citable documents2001321
Citable documents2002346
Citable documents2003370
Citable documents2004392
Citable documents2005383
Citable documents2006388
Citable documents2007391
Citable documents2008452
Citable documents2009502
Citable documents2010512
Citable documents2011507
Citable documents2012553
Citable documents2013575
Citable documents2014614
Citable documents2015587
Citable documents2016610
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.

DocumentsYearValue
Uncited documents1999113
Uncited documents200088
Uncited documents2001100
Uncited documents200296
Uncited documents200382
Uncited documents200494
Uncited documents200599
Uncited documents200690
Uncited documents200796
Uncited documents2008101
Uncited documents2009107
Uncited documents201088
Uncited documents201189
Uncited documents2012104
Uncited documents2013122
Uncited documents2014132
Uncited documents2015151
Uncited documents2016135
Cited documents1999180
Cited documents2000205
Cited documents2001236
Cited documents2002267
Cited documents2003309
Cited documents2004326
Cited documents2005311
Cited documents2006326
Cited documents2007318
Cited documents2008376
Cited documents2009425
Cited documents2010456
Cited documents2011457
Cited documents2012492
Cited documents2013502
Cited documents2014523
Cited documents2015481
Cited documents2016510
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