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2014 MEDLINE/PubMed Baseline Excluding OLDMEDLINE Data: 20,377,715 Citations Found

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID
20,377,715
20,377,715
1/1.00/1
1/7.46/8
DateCreated
20,377,715
20,377,715
1/1.00/1
8/8.00/8
DateCompleted
20,377,715
20,377,715
1/1.00/1
8/8.00/8
DateRevised
16,805,717
16,805,717
0/1.00/1
8/8.00/8
ISSN
20,264,554
20,264,554
0/1.00/1
9/9.00/9
   IssnType=Electronic
0
3,711,085
0
0
   IssnType=Print
0
16,553,469
0
0
Volume
20,000,986
20,000,986
0/1.00/1
1/2.24/50
Issue
19,203,693
19,203,693
0/1.00/1
1/1.44/48
PubDate
20,377,715
20,377,715
1/1.00/1
4/7.31/38
Title
20,377,715
20,377,715
1/1.00/1
2/37.59/585
ISOAbbreviation
20,377,650
20,377,650
0/1.00/1
1/16.51/96
ArticleTitle
20,377,715
20,377,715
1/1.00/1
1/87.53/1086
MedlinePgn
20,361,140
20,361,140
0/1.00/1
1/5.71/173
ELocationID
3,633,578
3,794,672
0/1.04/2
0/0.00/0
    Valid Yes
0
3,794,672
0
0
    Valid No
0
0
0
0
    EIdType=doi
0
3,602,881
0
0
    EIdType=pii
0
191,791
0
0
Abstract
0
0
0
0
    AbstractText
13,200,025
13,200,025
0/1.00/1
2/1218.78/9998
    CopyrightInformation
1,045,331
1,045,331
0/1.00/1
1/53.00/554
    Identified as Structured Abstract
2,308,599
0
0
0
       AbstractText
2,308,599
9,772,864
1/4.23/16
0
       NLMCategory: UNLABELLED
0
0
0
0
       NLMCategory: BACKGROUND
987,375
1,003,437
0
0
       NLMCategory: OBJECTIVE
1,539,723
1,543,028
0
0
       NLMCategory: METHODS
2,100,148
2,652,379
0
0
       NLMCategory: RESULTS
2,178,088
2,181,670
0
0
       NLMCategory: CONCLUSIONS
2,269,375
2,328,496
0
0
       NLMCategory: UNASSIGNED
9,209
11,628
0
0
Author
19,943,101
74,448,890
0/3.73/3173
1/12.25/489
    Valid Yes
0
74,433,475
0
0
    Valid No
0
15,415
0
0
    LastName
19,917,607
74,321,507
0/3.73/3172
1/6.74/163
    ForeName
19,908,642
74,278,848
0/3.73/3172
1/4.03/111
    Initials
19,908,642
74,278,847
0/3.73/3172
1/1.42/8
    Suffix
348,060
367,406
0/1.06/7
2/2.21/3
    CollectiveName
116,604
127,383
0/1.09/29
1/41.85/489
    LastForeSuffix
19,917,607
74,321,507
0/3.73/3172
1/10.78/163
    LastInitialsSuffix
19,917,607
74,321,507
0/3.73/3172
1/8.17/163
    Affiliation
12,308,324
12,308,346
0/1.00/2
1/102.63/1969
    Identifier
34
38
0/1.12/2
16/17.03/19
Language
20,377,715
20,416,540
1/1.00/6
3/3.00/3
Grant
1,990,337
4,533,623
0/2.28/335
14/37.92/107
    GrantID
1,904,167
4,405,465
0/2.31/335
1/10.54/66
    Acronym
1,808,666
4,216,227
0/2.33/335
2/2.00/2
    Agency
1,990,337
4,533,623
0/2.28/335
2/12.86/54
    Country
1,990,337
4,533,623
0/2.28/335
5/12.96/14
PublicationType
20,377,715
38,048,550
1/1.87/10
4/18.21/56

 

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
DataBank
238,366
242,122
0/1.02/4
5/107.55/47047
    DataBankName
238,366
242,122
0/1.02/4
3/7.39/18
    AccessionNumber
238,366
3,116,413
0/13.07/5880
2/7.78/14
ArticleDate
3,169,504
3,169,504
0/1.00/1
8/8.00/8
VernacularTitle
2,688,076
2,688,076
0/1.00/1
1/79.64/611
Country
20,377,715
20,377,715
1/1.00/1
4/9.93/35
MedlineTA
20,377,715
20,377,715
1/1.00/1
1/15.39/96
NlmUniqueID
20,377,715
20,377,715
1/1.00/1
7/7.27/9
ISSNLinking
20,087,651
20,087,651
0/1.00/1
9/9.00/9
Chemical
10,652,921
41,477,509
0/3.89/58
4/21.20/250
    RegistryNumber
10,652,921
41,477,509
0/3.89/58
1/4.71/15
    NameOfSubstance
10,652,921
41,477,509
0/3.89/58
2/16.50/249
SupplMeshName
41,123
46,277
0/1.13/10
5/21.57/177
    Type=Disease
23,795
24,658
0/1.04/5
5/28.66/177
    Type=Protocol
17,362
21,619
0/1.25/10
5/13.47/43
CitationSubset
19,162,095
22,117,600
0/1.15/6
1/1.99/3
GeneSymbol
59,508
126,194
0/2.12/25
1/4.51/41
CommentsCorrections
2,855,631
56,124,447
0/19.65/4916
8/45.48/827
    RetractionOf
2,743
3,007
0/1.10/20
25/94.89/344
    RetractionIn
2,869
2,897
0/1.01/2
27/59.43/341
    SummaryForPatientsIn
1,058
1,072
0/1.01/3
29/45.52/62
    OriginalReportIn
1,026
1,072
0/1.04/3
32/47.99/68
    CommentOn
541,337
598,476
0/1.11/34
8/45.64/227
    CommentIn
483,731
607,818
0/1.26/57
24/48.00/125
    ErratumIn
122,251
124,307
0/1.02/10
9/43.43/827
    ErratumFor
1,141
1,166
0/1.02/7
8/46.08/104
    ReprintIn
2,166
2,197
0/1.01/3
27/50.08/92
    ReprintOf
2,112
2,122
0/1.00/4
26/49.30/173
    RepublishedFrom
1,414
1,419
0/1.00/2
19/45.47/110
    RepublishedIn
1,222
1,227
0/1.00/2
26/47.32/92
    UpdateIn
4,473
4,505
0/1.01/2
33/49.74/60
    UpdateOf
4,389
4,390
0/1.00/2
31/49.83/100
    PartialRetractionOf
36
37
0/1.03/2
32/115.51/211
    PartialRetractionIn
36
36
0/1.00/1
36/81.44/199
    Cites
1,857,310
54,768,699
0/29.49/4916
22/45.45/198
MeshHeading
19,157,096
207,529,108
0/10.83/68
2/20.33/204
    DescriptorName
19,157,096
207,529,108
0/10.83/68
2/14.08/104
       Descriptor Major
9,495,194
16,508,018
0/1.74/37
0
       Descriptor Not Major
19,059,891
187,514,621
0/9.84/63
0
    QualifierName
17,956,638
115,697,078
0/6.44/71
5/11.23/29
       Qualifier Major
17,177,994
49,749,456
0/2.90/33
0
       Qualifier Not Major
14,586,995
65,947,622
0/4.52/71
0
    Descriptor and/or Qualifier Major
19,027,842
63,783,114
0/3.35/37
0
PersonalNameSubject
137,440
158,817
0/1.16/28
3/12.12/75
    LastName
137,440
158,817
0/1.16/28
1/7.36/69
    ForeName
133,218
153,247
0/1.15/28
1/3.50/48
    Initials
133,218
153,247
0/1.15/28
1/1.42/6
    Suffix
1,105
1,136
0/1.03/3
2/2.10/3
    LastForeSuffix
137,440
158,817
0/1.16/28
3/10.75/73
    LastInitialsSuffix
137,440
158,817
0/1.16/28
2/8.74/69

 

Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
NumberOfReferences
1,538,066
1,538,066
0/1.00/1
1/2.10/8
OtherID
2,353,412
2,748,688
0/1.17/6
1/10.09/36
    NLM Source
0
2,437,015
0
0
OtherAbstract
0
0
0
0
    AbstractText
63,041
63,124
0/1.00/2
38/1259.12/4096
    CopyrightInformation
1,855
1,855
0/1.00/1
11/16.80/17
Keyword
319,279
2,403,919
0/7.53/211
1/16.49/171
    Keyword Major
80,772
523,611
0/6.48/50
0
    Keyword Not Major
318,073
1,880,308
0/5.91/211
0
GeneralNote
148,339
281,751
0/1.90/32
2/34.28/1226
SpaceFlightMission
4,188
19,395
0/4.63/12
6/13.87/28
InvestigatorList
29,882
0
0
0
Investigator: Inclusive (pre-2008 Policy)
8,937
10,292
0/1.15/6
7/31.05/96
    LastName
8,937
10,292
0/1.15/6
2/6.69/16
    ForeName
8,929
10,281
0/1.15/6
1/2.70/9
    Initials
8,929
10,281
0/1.15/6
1/1.85/2
    Suffix
16
16
0/1.00/1
2/2.19/3
    Affiliation
8,936
10,291
0/1.15/6
3/19.81/83
    LastForeSuffix
8,937
10,292
0/1.15/6
3/9.39/19
    LastInitialsSuffix
8,937
10,292
0/1.15/6
3/8.54/18
Investigator: 2008 Policy
20,945
1,274,730
0/60.86/3068
2/12.48/164
    LastName
20,945
1,274,730
0/60.86/3068
1/7.01/158
    ForeName
20,887
1,264,574
0/60.54/3068
1/4.32/46
    Initials
20,887
1,264,574
0/60.54/3068
1/1.19/6
    Suffix
1,598
2,770
0/1.73/20
2/2.30/3
    Affiliation
22
22
0/1.00/1
8/23.64/47
    LastForeSuffix
20,945
1,274,730
0/60.86/3068
2/11.29/163
    LastInitialsSuffix
20,945
1,274,730
0/60.86/3068
2/8.19/159

 

Element Name
Size or Count
Average Record Size in Bytes
1,520
Words in Title Average
12.04
Words in Title Max
249
Words in Abstract Average
184.23
Words in Abstract Max
1,696
AB Size Zero
7,177,690
AB Size < 1,000
4,762,302
AB Size 1,000 - 1,999
7,611,196
AB Size 2,000 - 2,999
782,872
AB Size 3,000 - 3,999
37,852
AB Size 4,000 - 4,999
4,012
AB Size > 5,000
1,791
Number of MH Occurrences with NO SHs
124,203,015
Number of MH Occurrences with ONE SH
58,459,032
Number of MH Occurrences with SHs
83,326,093
Number of MH Type=Geographic
3,506,469

 

CollectiveName, Author, and Investigator Related
Counts
Citations containing ONLY CollectiveName
25,494
Citations containing BOTH CollectiveName and Author LastName
91,110
Citations containing BOTH CollectiveName and Investigator LastName
20,919
Citations containing BOTH Author LastName and Investigator LastName
28,451
Citations containing Investigator LastName and Owned by NASA
3,904
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
1,215,620
   OLDMEDLINE
0
   MEDLINE
19,162,095

 

Article PubModel
Counts
   Print-Electronic
2,878,452
   Electronic-Print
15,239
   Print
17,203,980
   Electronic-eCollection
13,188
   Electronic
266,856

 

JournalIssue CitedMedium
Counts
   Internet
3,771,049
   Print
16,606,666

 

Owner
MedlineCitation
GeneralNote
Keyword
OtherAbstract
NLM
20,246,268
3,620
0
0
NASA
10,725
4,570
12,939
409
PIP
37,393
63,794
68,853
53,146
KIE
31,939
209,616
73,817
3,026
HSR
7,713
151
0
0
HMD
43,677
0
0
0
SIS
0
0
0
0
NOTNLM
0
0
164,099
0
AIDS
0
0
0
5,342
Publisher
0
0
0
1,201

 

Grant Country
Occurrences
   United States
4,329,127
   United Kingdom
158,222
   Italy
8,811
   Canada
34,085
   Austria
2,656
   International
700
   Ireland
22

 

CitationSubsets
Counts
   AIM
1,961,162
   B
10,445
   C
7,404
   D
507,887
   E
90,568
   F
8,016
   H
257,892
   IM
17,909,335
   J
68,941
   K
22,786
   N
608,428
   OM
0
   Q
201,856
   QIS
5,972
   QO
24,429
   R
3,602
   S
187,207
   T
52,882
   X
188,788

 

Publication Types
Counts
   Addresses
4,190
   Bibliography
14,607
   Biography
135,287
   Case Reports
1,616,042
   Classical Article
5,682
   Clinical Conference
6,415
   Clinical Trial
478,656
   Clinical Trial, Phase I
13,228
   Clinical Trial, Phase II
21,282
   Clinical Trial, Phase III
8,080
   Clinical Trial, Phase IV
847
   Comment
541,338
   Comparative Study
1,634,426
   Congresses
59,369
   Consensus Development Conference
8,558
   Consensus Development Conference, NIH
708
   Controlled Clinical Trial
86,436
   Corrected and Republished Article
1,414
   Dictionary
535
   Directory
6,611
   Duplicate Publication
1,098
   Editorial
328,006
   English Abstract
1,681,148
   Evaluation Studies
184,096
   Festschrift
1,418
   Government Publications
187
   Guideline
15,256
   Historical Article
286,458
   In Vitro
369,692
   Interview
23,770
   Journal Article
18,956,252
   Lectures
5,765
   Legal Cases
10,093
   Legislation
1,666
   Letter
793,265
   Meta-Analysis
41,859
   Multicenter Study
159,092
   News
154,849
   Newspaper Article
17,855
   Overall
26,969
   Patient Education Handout
3,843
   Periodical Index
322
   Personal Narrative
453
   Portraits
38,206
   Practice Guideline
18,081
   Published Erratum
1,159
   Randomized Controlled Trial
354,135
   Research Support, American Recovery and Reinvestment Act
1,068
   Research Support, N.I.H., Extramural
664,548
   Research Support, N.I.H., Intramural
32,193
   Research Support, Non-U.S. Gov't
5,247,880
   Research Support, U.S. Gov't, Non-P.H.S.
641,367
   Research Support, U.S. Gov't, P.H.S.
1,442,024
   Retracted Publication
2,901
   Retraction of Publication
2,817
   Review
1,790,263
   Scientific Integrity Review
181
   Technical Report
2,207
   Twin Study
5,869
   Validation Studies
63,264
   Video-Audio Media
4,262
   Webcasts
287

 

ELocationId EIdType
Counts
DOI or PII, MedlinePgn Not Found
3,479
DOI or PII, MedlinePgn Found
3,469,005
DOI and PII, MedlinePgn Not Found
13,096
DOI and PII, MedlinePgn Found
147,998

 

PMID Versioning
Counts
Version 1
20,377,618
Version 2
67
Version 3
12
Version 4
6
Version 5
3
Version 6
3
Version 7
2
Version 8
2
Version 9
1
Version 10
1