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2013 MEDLINE/PubMed Baseline Excluding OLDMEDLINE Data: 19,509,338 Citations Found

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID
19,509,338
19,509,338
1/1.00/1
1/7.44/8
DateCreated
19,509,338
19,509,338
1/1.00/1
8/8.00/8
DateCompleted
19,509,338
19,509,338
1/1.00/1
8/8.00/8
DateRevised
15,610,101
15,610,101
0/1.00/1
8/8.00/8
ISSN
19,402,281
19,402,281
0/1.00/1
9/9.00/9
IssnType=Electronic
0
0
0
0
IssnType=Print
0
0
0
0
Volume
19,137,754
19,137,754
0/1.00/1
1/2.25/50
Issue
18,436,942
18,436,942
0/1.00/1
1/1.45/48
PubDate
19,509,338
19,509,338
1/1.00/1
4/7.33/38
Title
19,509,338
19,509,338
1/1.00/1
2/37.80/595
ISOAbbreviation
19,509,295
19,509,295
0/1.00/1
1/16.50/96
ArticleTitle
19,509,338
19,509,338
1/1.00/1
2/87.05/1086
MedlinePgn
19,499,717
19,499,717
0/1.00/1
1/5.71/176
ELocationID
2,915,973
2,940,396
0/1.01/2
0/0.00/0
Valid Yes
0
2,940,396
0
0
Valid No
0
0
0
0
EIdType=doi
0
2,890,081
0
0
EIdType=pii
0
50,315
0
0
Abstract
0
0
0
0
AbstractText
12,462,374
12,462,374
0/1.00/1
50/1210.58/10160
CopyrightInformation
831,298
831,298
0/1.00/1
1/50.44/422
Identified as Structured Abstract
2,038,059
0
0
0
Affiliation
11,530,473
11,530,473
0/1.00/1
1/101.97/505
Author
19,083,885
69,937,449
0/3.66/3173
1/12.20/500
Valid Yes
0
69,923,760
0
0
Valid No
0
13,689
0
0
LastName
19,059,701
69,821,794
0/3.66/3172
1/6.81/163
ForeName
19,051,088
69,781,201
0/3.66/3172
1/3.90/111
Initials
19,051,088
69,781,200
0/3.66/3172
1/1.42/8
Suffix
338,883
357,778
0/1.06/7
2/2.21/3
CollectiveName
105,941
115,655
0/1.09/29
1/42.03/500
LastForeSuffix
19,059,701
69,821,794
0/3.66/3172
1/10.73/163
LastInitialsSuffix
19,059,701
69,821,794
0/3.66/3172
1/8.25/163
Language
19,509,338
19,545,092
1/1.00/5
3/3.00/3
Grant
1,871,115
4,043,155
0/2.16/332
14/37.74/100
GrantID
1,793,635
3,931,657
0/2.19/332
1/10.41/66
Acronym
1,709,508
3,770,760
0/2.21/332
2/2.00/2
Agency
1,871,115
4,043,155
0/2.16/332
2/12.78/54
Country
1,871,115
4,043,155
0/2.16/332
5/12.97/14
DataBank
223,213
226,771
0/1.02/4
5/101.68/47047
DataBankName
223,213
226,771
0/1.02/4
3/7.23/18
AccessionNumber
223,213
2,766,150
0/12.39/5880
2/7.74/14
PublicationType
19,509,338
36,373,865
1/1.86/10
4/18.15/56
ArticleDate
2,631,159
2,631,159
0/1.00/1
8/8.00/8
VernacularTitle
2,665,146
2,665,146
0/1.00/1
1/81.18/614
Country
19,509,338
19,509,338
1/1.00/1
4/9.93/35
MedlineTA
19,509,338
19,509,338
1/1.00/1
1/15.37/96
NlmUniqueID
19,509,338
19,509,338
1/1.00/1
7/7.25/9

 

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
ISSNLinking
19,229,354
19,229,354
0/1.00/1
9/9.00/9
Chemical
10,228,844
39,676,328
0/3.88/58
4/20.80/250
RegistryNumber
10,228,844
39,676,328
0/3.88/58
1/4.35/15
NameOfSubstance
10,228,844
39,676,328
0/3.88/58
2/16.46/249
SupplMeshName
30,683
35,305
0/1.15/10
5/19.62/111
Type=Disease
13,979
14,450
0/1.03/5
6/28.50/111
Type=Protocol
16,731
20,855
0/1.25/10
5/13.46/43
CitationSubset
18,439,958
21,327,345
0/1.16/6
1/1.99/3
GeneSymbol
59,509
126,195
0/2.12/25
1/4.51/41
CommentsCorrections
2,412,399
40,460,746
0/16.77/4881
8/45.16/835
RetractionOf
2,262
2,461
0/1.09/11
25/95.07/344
RetractionIn
2,298
2,325
0/1.01/2
27/61.50/341
SummaryForPatientsIn
984
998
0/1.01/3
29/45.40/62
OriginalReportIn
953
998
0/1.05/3
32/47.92/68
CommentOn
505,368
555,667
0/1.10/32
8/45.60/215
CommentIn
449,824
561,194
0/1.25/57
24/48.17/125
ErratumIn
113,835
115,737
0/1.02/10
9/42.91/835
ErratumFor
1,104
1,129
0/1.02/7
8/46.09/104
ReprintIn
1,987
2,015
0/1.01/3
27/50.23/92
ReprintOf
1,943
1,953
0/1.01/4
26/49.59/173
RepublishedFrom
1,397
1,402
0/1.00/2
19/45.47/110
RepublishedIn
1,201
1,206
0/1.00/2
26/47.30/92
UpdateIn
3,963
3,995
0/1.01/2
33/49.55/59
UpdateOf
3,948
3,949
0/1.00/2
31/49.49/100
PartialRetractionOf
32
33
0/1.03/2
32/113.18/211
PartialRetractionIn
33
33
0/1.00/1
36/85.00/199
Cites
1,459,779
39,205,651
0/26.86/4881
22/45.12/198
MeshHeading
18,435,363
198,800,444
0/10.78/68
2/20.27/204
DescriptorName
18,435,363
198,800,444
0/10.78/68
2/14.04/104
Descriptor Major
9,121,038
15,849,159
0/1.74/37
0
Descriptor Not Major
18,339,569
179,594,713
0/9.79/63
0
QualifierName
17,258,203
110,293,328
0/6.39/71
5/11.23/29
Qualifier Major
16,494,874
47,377,354
0/2.87/32
0
Qualifier Not Major
14,028,631
62,915,974
0/4.48/71
0
Descriptor and/or Qualifier Major
18,305,747
60,933,220
0/3.33/37
0
NumberOfReferences
1,538,532
1,538,532
0/1.00/1
1/2.10/8
PersonalNameSubject
134,961
155,837
0/1.15/28
3/12.12/70
LastName
134,961
155,837
0/1.15/28
1/7.43/69
ForeName
130,772
150,310
0/1.15/28
1/3.43/48
Initials
130,772
150,310
0/1.15/28
1/1.42/6
Suffix
1,083
1,113
0/1.03/3
2/2.10/3
LastForeSuffix
134,961
155,837
0/1.15/28
3/10.75/69
LastInitialsSuffix
134,961
155,837
0/1.15/28
2/8.81/69
OtherID
2,079,210
2,411,422
0/1.16/5
1/9.91/35
NLM Source
0
2,099,725
0
0
OtherAbstract
0
0
0
0
AbstractText
61,904
61,944
0/1.00/2
60/1284.20/4096
CopyrightInformation
1,856
1,856
0/1.00/1
11/16.80/17

 

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
Keyword
155,257
1,587,365
0/10.22/98
2/17.03/123
Keyword Major
80,829
523,786
0/6.48/50
0
Keyword Not Major
154,051
1,063,579
0/6.90/88
0
GeneralNote
147,237
280,601
0/1.91/32
2/34.30/704
SpaceFlightMission
4,189
19,399
0/4.63/12
6/13.87/28
InvestigatorList
26,055
0
0
0
Investigator: Inclusive (pre-2008 Policy)
8,945
10,300
0/1.15/6
7/31.05/96
LastName
8,945
10,300
0/1.15/6
2/6.70/16
ForeName
8,937
10,289
0/1.15/6
1/2.70/9
Initials
8,937
10,289
0/1.15/6
1/1.85/2
Suffix
16
16
0/1.00/1
2/2.19/3
Affiliation
8,944
10,299
0/1.15/6
3/19.81/83
LastForeSuffix
8,945
10,300
0/1.15/6
3/9.40/19
LastInitialsSuffix
8,945
10,300
0/1.15/6
3/8.55/18
Investigator: 2008 Policy
17,110
1,011,436
0/59.11/3068
2/12.45/164
LastName
17,110
1,011,436
0/59.11/3068
1/7.05/158
ForeName
17,061
1,002,751
0/58.77/3068
1/4.25/47
Initials
17,061
1,002,751
0/58.77/3068
1/1.19/6
Suffix
1,316
2,222
0/1.69/20
2/2.31/3
Affiliation
21
21
0/1.00/1
8/22.52/43
LastForeSuffix
17,110
1,011,436
0/59.11/3068
2/11.27/163
LastInitialsSuffix
17,110
1,011,436
0/59.11/3068
2/8.24/159

 

Element Name
Citations
Average Record Size in Bytes
1,528
Words in Title Average
11.98
Words in Title Max
249
Words in Abstract Average
183.07
Words in Abstract Max
1,669
AB Size Zero
7,046,964
AB Size < 1,000
4,580,428
AB Size 1,000 - 1,999
7,116,118
AB Size 2,000 - 2,999
725,450
AB Size 3,000 - 3,999
35,104
AB Size 4,000 - 4,999
3,664
AB Size > 5,000
1,610
Number of MH Occurrences with NO SHs
119,085,752
Number of MH Occurrences with ONE SH
56,180,565
Number of MH Occurrences with SHs
79,714,692
Number of MH Type=Geographic
3,356,572

 

CollectiveName, Author, and Investigator Related
Counts
Citations containing ONLY CollectiveName
24,184
Citations containing BOTH CollectiveName and Author LastName
81,757
Citations containing BOTH CollectiveName and Investigator LastName
17,085
Citations containing BOTH Author LastName and Investigator LastName
24,862
Citations containing Investigator LastName and Owned by NASA
3,911
Both Investigator and Author Found
0
Investigator Found Without Collective
0

 

MedlineCitation Status
Counts
Completed
0
In-Process
0
In-Data-Review
0
PubMed-not-MEDLINE
1,069,380
OLDMEDLINE
0
MEDLINE
18,439,958

 

Article PubModel
Counts
Print-Electronic
2,416,487
Electronic-Print
7,419
Print
16,873,936
Electronic
211,496

 

JournalIssue CitedMedium
Counts
Internet
3,098,505
Print
16,410,833

 

Owner
MedlineCitation
GeneralNote
Keyword
OtherAbstract
NLM
19,378,171
2,499
0
0
NASA
10,725
4,570
12,946
409
PIP
37,330
63,798
68,906
53,167
KIE
31,968
209,640
73,831
3,026
HSR
7,342
94
0
0
HMD
43,802
0
0
0
SIS
0
0
0
0
NOTNLM
0
0
0
0
AIDS
0
0
0
5,342

 

CitationSubsets
Counts
AIM
1,908,474
B
10,445
C
7,404
D
497,074
E
89,657
F
8,017
H
252,925
IM
17,209,590
J
68,994
K
22,088
N
593,895
OM
0
Q
202,140
QIS
5,449
QO
24,474
R
3,603
S
185,920
T
50,510
X
186,686

 

Grant Country
Counts
United States
3,873,203
United Kingdom
133,883
Italy
8,783
Canada
24,914
Austria
2,350
Ireland
22

 

Publication Types
Counts
Addresses
3,990
Bibliography
14,409
Biography
132,766
Case Reports
1,566,184
Classical Article
5,474
Clinical Conference
6,228
Clinical Trial
471,111
Clinical Trial, Phase I
12,290
Clinical Trial, Phase II
19,756
Clinical Trial, Phase III
7,185
Clinical Trial, Phase IV
737
Comment
505,369
Comparative Study
1,589,250
Congresses
57,816
Consensus Development Conference
8,111
Consensus Development Conference, NIH
692
Controlled Clinical Trial
84,634
Corrected and Republished Article
1,397
Dictionary
535
Directory
6,609
Duplicate Publication
1,001
Editorial
308,412
English Abstract
1,642,576
Evaluation Studies
170,659
Festschrift
1,363
Government Publications
188
Guideline
15,120
Historical Article
280,368
In Vitro
366,561
Interview
22,902
Journal Article
18,152,461
Lectures
5,534
Legal Cases
9,886
Legislation
1,666
Letter
761,323
Meta-Analysis
35,465
Multicenter Study
146,475
News
147,369
Newspaper Article
17,723
Overall
26,328
Patient Education Handout
3,617
Periodical Index
320
Portraits
36,839
Practice Guideline
17,016
Published Erratum
1,121
Randomized Controlled Trial
333,395
Research Support, American Recovery and Reinvestment Act
644
Research Support, N.I.H., Extramural
584,115
Research Support, N.I.H., Intramural
27,871
Research Support, Non-U.S. Gov't
4,907,593
Research Support, U.S. Gov't, Non-P.H.S.
607,779
Research Support, U.S. Gov't, P.H.S.
1,437,952
Retracted Publication
2,327
Retraction of Publication
2,313
Review
1,709,527
Scientific Integrity Review
170
Technical Report
2,139
Twin Study
5,385
Validation Studies
57,863
Video-Audio Media
3,073
Webcasts
254

 

ELocationId EIdType
Counts
DOI or PII, MedlinePgn Not Found
2,788
DOI or PII, MedlinePgn Found
2,888,762
DOI and PII, MedlinePgn Not Found
6,833
DOI and PII, MedlinePgn Found
17,590

 

PMID Versioning
Counts
Version 1
19,509,253
Version 2
55
Version 3
12
Version 4
6
Version 5
3
Version 6
3
Version 7
2
Version 8
2
Version 9
1
Version 10
1