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2014 MEDLINE®/PubMed® Baseline: 22,376,811 Citations Found

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID
22,376,811
22,376,811
1/1.00/1
1/7.51/8
DateCreated
22,376,811
22,376,811
1/1.00/1
8/8.00/8
DateCompleted
22,376,811
22,376,811
1/1.00/1
8/8.00/8
DateRevised
18,678,976
18,678,976
0/1.00/1
8/8.00/8
ISSN
22,085,483
22,085,483
0/1.00/1
9/9.00/9
IssnType=Electronic
0
3,714,149
0
0
IssnType=Print
0
18,371,334
0
0
Volume
21,988,690
21,988,690
0/1.00/1
1/2.22/50
Issue
20,376,186
20,376,186
0/1.00/1
1/1.46/48
PubDate
22,376,811
22,376,811
1/1.00/1
4/7.33/38
Title
22,376,811
22,376,811
1/1.00/1
2/37.41/585
ISOAbbreviation
22,376,741
22,376,741
0/1.00/1
1/16.53/96
ArticleTitle
22,376,811
22,376,811
1/1.00/1
1/85.55/1086
MedlinePgn
22,360,236
22,360,236
0/1.00/1
1/5.69/173
ELocationID
3,634,172
3,795,266
0/1.04/2
0/0.00/0
Valid Yes
0
3,795,266
0
0
Valid No
0
0
0
0
EIdType=doi
0
3,603,475
0
0
EIdType=pii
0
191,791
0
0
Abstract
0
0
0
0
AbstractText
13,214,810
13,214,810
0/1.00/1
2/1218.45/9998
CopyrightInformation
1,045,331
1,045,331
0/1.00/1
1/53.00/554
Identified as Structured Abstract
2,308,600
0
0
0
AbstractText
2,308,600
9,772,867
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
2,178,089
2,181,671
0
0
NLMCategory: CONCLUSIONS
2,269,375
2,328,496
0
0
NLMCategory: UNASSIGNED
9,210
11,629
0
0
Author
21,896,177
77,803,953
0/3.55/3173
1/12.17/489
Valid Yes
0
77,788,538
0
0
Valid No
0
15,415
0
0
LastName
21,870,677
77,676,557
0/3.55/3172
1/6.76/163
ForeName
21,841,955
77,586,830
0/3.55/3172
1/3.94/111
Initials
21,841,955
77,586,829
0/3.55/3172
1/1.42/8
Suffix
393,233
415,322
0/1.06/7
2/2.19/3
CollectiveName
116,617
127,396
0/1.09/29
1/41.85/489
LastForeSuffix
21,870,677
77,676,557
0/3.55/3172
1/10.71/163
LastInitialsSuffix
21,870,677
77,676,557
0/3.55/3172
1/8.19/163
Affiliation
12,310,076
12,310,098
0/1.00/2
1/102.62/1969
Identifier
34
38
0/1.12/2
16/17.03/19
Language
22,376,811
22,421,979
1/1.00/6
3/3.00/3
Grant
1,990,412
4,533,756
0/2.28/335
14/37.92/107
GrantID
1,904,242
4,405,598
0/2.31/335
1/10.54/66
Acronym
1,808,690
4,216,255
0/2.33/335
2/2.00/2
Agency
1,990,412
4,533,756
0/2.28/335
2/12.86/54
Country
1,990,412
4,533,756
0/2.28/335
5/12.96/14
PublicationType
22,376,811
40,119,077
1/1.79/10
4/18.03/56

 

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
3,440,348
3,440,348
0/1.00/1
1/77.80/611
Country
22,376,811
22,376,811
1/1.00/1
4/10.15/35
MedlineTA
22,376,811
22,376,811
1/1.00/1
1/15.44/96
NlmUniqueID
22,376,811
22,376,811
1/1.00/1
7/7.27/9
ISSNLinking
21,894,886
21,894,886
0/1.00/1
9/9.00/9
Chemical
11,214,090
42,437,552
0/3.78/58
4/21.13/250
RegistryNumber
11,214,090
42,437,552
0/3.78/58
1/4.72/15
NameOfSubstance
11,214,090
42,437,552
0/3.78/58
2/16.41/249
SupplMeshName
41,237
46,391
0/1.12/10
5/21.56/177
Type=Disease
23,909
24,772
0/1.04/5
5/28.63/177
Type=Protocol
17,362
21,619
0/1.25/10
5/13.47/43
CitationSubset
21,161,191
24,142,269
0/1.14/6
1/1.99/3
GeneSymbol
59,508
126,194
0/2.12/25
1/4.51/41
CommentsCorrections
2,922,762
56,542,929
0/19.35/4916
8/45.48/827
RetractionOf
2,743
3,007
0/1.10/20
25/94.89/344
RetractionIn
2,870
2,898
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
483,817
607,905
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
2,173
2,204
0/1.01/3
27/50.07/92
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
1,924,358
55,187,086
0/28.68/4916
22/45.45/198
MeshHeading
20,997,401
212,171,752
0/10.10/103
2/20.23/204
DescriptorName
20,997,401
212,171,752
0/10.10/103
2/14.06/104
Descriptor Major
10,892,114
20,063,685
0/1.84/103
0
Descriptor Not Major
19,789,753
188,564,257
0/9.53/63
0
QualifierName
18,668,460
116,727,842
0/6.25/71
5/11.22/29
Qualifier Major
17,889,329
50,778,663
0/2.84/33
0
Qualifier Not Major
14,587,849
65,949,179
0/4.52/71
0
Descriptor and/or Qualifier Major
20,864,028
68,356,944
0/3.28/103
0
PersonalNameSubject
164,545
186,664
0/1.13/28
3/12.46/75
LastName
164,545
186,664
0/1.13/28
1/7.36/69
ForeName
159,005
179,671
0/1.13/28
1/3.85/48
Initials
159,005
179,671
0/1.13/28
1/1.42/6
Suffix
1,246
1,282
0/1.03/3
1/2.21/12
LastForeSuffix
164,545
186,664
0/1.13/28
3/11.09/73
LastInitialsSuffix
164,545
186,664
0/1.13/28
2/8.75/69

 

Element Name
Citations
Occurrences
Min/Avg/Max
Occurrences
Min/Avg/Max
Length
NumberOfReferences
1,546,226
1,546,226
0/1.00/1
1/2.10/8
OtherID
3,625,128
4,075,194
0/1.12/6
1/11.24/391
NLM Source
0
2,528,831
0
0
OtherAbstract
0
0
0
0
AbstractText
63,060
63,143
0/1.00/2
38/1259.10/4096
CopyrightInformation
1,855
1,855
0/1.00/1
11/16.80/17
Keyword
2,299,975
7,349,190
0/3.20/211
1/16.75/171
Keyword Major
2,061,468
5,468,689
0/2.65/105
0
Keyword Not Major
318,092
1,880,501
0/5.91/211
0
GeneralNote
148,538
281,950
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
1,419
Words in Title Average
12
Words in Title Max
249
Words in Abstract Average
184
Words in Abstract Max
1,696
AB Size Zero
9,162,001
AB Size < 1,000
4,771,419
AB Size 1,000 - 1,999
7,616,323
AB Size 2,000 - 2,999
783,336
AB Size 3,000 - 3,999
37,911
AB Size 4,000 - 4,999
4,025
AB Size > 5,000
1,796
Number of MH Occurrences with NO SHs
127,825,536
Number of MH Occurrences with ONE SH
59,469,060
Number of MH Occurrences with SHs
84,346,216
Number of MH Type=Geographic
3,543,810

 

CollectiveName, Author, and Investigator Related
Counts
Citations containing ONLY CollectiveName
25,500
Citations containing BOTH CollectiveName and Author LastName
91,117
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
28,451
Investigator Found Without Collective
8,963

 

MedlineCitation Status
Counts
Completed
0
In-Process
0
In-Data-Review
0
PubMed-not-MEDLINE
1,215,620
OLDMEDLINE
375,570
MEDLINE
20,785,621

 

Article PubModel
Counts
Print-Electronic
2,878,452
Electronic-Print
15,239
Print
19,203,076
Electronic-eCollection
13,188
Electronic
266,856

 

JournalIssue CitedMedium
Counts
Internet
3,774,410
Print
18,602,401

 

Owner
MedlineCitation
GeneralNote
Keyword
OtherAbstract
NLM
22,245,311
3,815
1,980,696
0
NASA
10,725
4,570
12,939
409
PIP
37,446
63,798
68,872
53,165
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
4,329,260
United Kingdom
158,222
Italy
8,811
Canada
34,085
Austria
2,656
International
700
Ireland
22

 

Citation Subsets
Counts
AIM
1,961,162
B
10,445
C
7,404
D
523,301
E
90,568
F
8,016
H
257,892
IM
17,909,335
J
68,960
K
22,786
N
618,568
OM
1,999,096
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
15,047
Biography
162,408
Case Reports
1,644,193
Classical Article
5,682
Clinical Conference
6,418
Clinical Trial
478,658
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
1,634,434
Congresses
59,369
Consensus Development Conference
8,558
Consensus Development Conference, NIH
708
Controlled Clinical Trial
86,439
Corrected and Republished Article
1,414
Dictionary
535
Directory
6,611
Duplicate Publication
1,098
Editorial
328,007
English Abstract
1,681,192
Evaluation Studies
184,098
Festschrift
1,418
Government Publications
187
Guideline
15,256
Historical Article
294,350
In Vitro
369,692
Interview
23,770
Journal Article
20,954,907
Lectures
5,766
Legal Cases
10,094
Legislation
1,666
Letter
793,275
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
38,208
Practice Guideline
18,081
Published Erratum
1,159
Randomized Controlled Trial
354,136
Research Support, American Recovery and Reinvestment Act
1,068
Research Support, N.I.H., Extramural
664,548
Research Support, N.I.H., Intramural
32,194
Research Support, Non-U.S. Gov't
5,247,881
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
2,902
Retraction of Publication
2,817
Review
1,798,449
Scientific Integrity Review
181
Technical Report
2,207
Twin Study
5,870
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
3,469,599
DOI and PII, MedlinePgn Not Found
13,096
DOI and PII, MedlinePgn Found
147,998

 

PMID Versioning
Counts
Version 1
22,376,714
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