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2016 MEDLINE/PubMed Baseline: 24,358,442 Citations Found

Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID 24,358,442 24,358,442 1/1.00/1 1/7.55/8
DateCreated 24,358,442 24,358,442 1/1.00/1 8/8.00/8
DateCompleted 24,358,442 24,358,442 1/1.00/1 8/8.00/8
DateRevised 20,002,960 20,002,960 0/1.00/1 8/8.00/8
ISSN 23,989,539 23,989,539 0/1.00/1 9/9.00/9
   IssnType=Electronic   5,286,228    
   IssnType=Print   18,703,311    
Volume 23,959,371 23,959,371 0/1.00/1 1/2.22/50
Issue 22,058,236 22,058,236 0/1.00/1 1/1.45/60
PubDate 24,358,442 24,358,442 1/1.00/1 4/7.30/38
Title 24,358,442 24,358,442 1/1.00/1 2/37.46/595
ISOAbbreviation 24,357,537 24,357,537 0/1.00/1 1/16.54/96
ArticleTitle 24,358,442 24,358,442 1/1.00/1 2/86.69/1999
MedlinePgn 24,326,390 24,326,390 0/1.00/1 1/5.68/173
ELocationID 5,323,041 5,866,293 0/1.10/2 0/0.00/0
    Valid Yes   5,866,291    
    Valid No   2    
    EIdType=doi   5,280,798    
    EIdType=pii   585,495    
Abstract        
    AbstractText 14,891,717 14,891,717 0/1.00/1 1/1234.95/9996
    CopyrightInformation 1,600,183 1,600,183 0/1.00/1 1/56.41/963
    Identified as Structured Abstract 2,855,194      
       AbstractText 2,855,194 12,070,154 1/4.23/22  
       NLMCategory: UNLABELLED 75,930 75,930    
       NLMCategory: BACKGROUND 1,257,276 1,283,165    
       NLMCategory: OBJECTIVE 1,870,709 1,877,310    
       NLMCategory: METHODS 2,592,905 3,246,257    
       NLMCategory: RESULTS 2,683,735 2,689,118    
       NLMCategory: CONCLUSIONS 2,803,635 2,883,602    
       NLMCategory: UNASSIGNED 12,409 14,772    
Author 23,859,446 88,132,299 0/3.69/5156 1/12.40/489
    Valid Yes   88,113,380    
    Valid No   18,919    
    LastName 23,831,304 87,978,436 0/3.69/5154 1/6.71/129
    ForeName 23,801,975 87,884,045 0/3.69/5154 1/4.22/111
    Initials 23,801,974 87,884,037 0/3.69/5154 1/1.42/8
    Suffix 413,545 437,013 0/1.06/11 1/2.21/20
    CollectiveName 140,600 153,863 0/1.09/29 1/41.72/489
    LastForeSuffix 23,831,304 87,978,436 0/3.69/5154 1/10.94/130
    LastInitialsSuffix 23,831,304 87,978,436 0/3.69/5154 1/8.14/130
    Affiliation 14,054,434 17,471,667 0/1.24/5154 1/112.74/2008
    Identifier 16,027 29,901 0/1.87/37 16/23.90/57
Language 24,358,442 24,410,725 1/1.00/6 3/3.00/3
Grant 2,293,182 5,784,309 0/2.52/357 14/38.33/110
    GrantID 2,194,559 5,600,883 0/2.55/357 1/10.65/66
    Acronym 2,000,947 5,202,613 0/2.60/357 2/2.00/2
    Agency 2,293,182 5,784,309 0/2.52/357 2/13.24/84
    Country 2,293,182 5,784,309 0/2.52/357 5/12.97/14
PublicationType 24,358,442 43,545,527 1/1.79/10 4/18.22/56


Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
DataBank 273,498 278,273 0/1.02/4 5/112.21/47047
    DataBankName 273,498 278,273 0/1.02/4 3/7.68/18
    AccessionNumber 273,498 3,707,581 0/13.56/5880 2/7.85/31
ArticleDate 4,431,327 4,431,327 0/1.00/1 8/8.00/8
VernacularTitle 3,499,348 3,499,348 0/1.00/1 1/77.84/611
Country 24,358,442 24,358,442 1/1.00/1 4/10.14/35
MedlineTA 24,358,442 24,358,442 1/1.00/1 1/15.48/96
NlmUniqueID 24,358,442 24,358,442 1/1.00/1 7/7.31/9
ISSNLinking 23,743,359 23,743,359 0/1.00/1 9/9.00/9
Chemical 12,243,319 46,696,276 0/3.81/58 4/21.11/245
    RegistryNumber 12,243,319 46,696,276 0/3.81/58 1/4.70/15
    NameOfSubstance 12,243,319 46,696,276 0/3.81/58 2/16.41/244
SupplMeshName 81,266 88,055 0/1.08/10 5/23.54/177
    Type=Disease 62,719 64,965 0/1.04/5 5/27.12/177
    Type=Protocol 18,601 23,090 0/1.24/10 5/13.47/43
CitationSubset 22,775,609 25,896,398 0/1.14/6 1/1.99/3
GeneSymbol 59,508 126,194 0/2.12/25 1/4.51/41
CommentsCorrections 3,512,090 74,874,599 0/21.32/4916 8/45.62/827
    RetractionOf 3,765 4,074 0/1.08/20 23/95.24/344
    RetractionIn 3,953 4,006 0/1.01/3 27/57.29/341
    SummaryForPatientsIn 1,171 1,187 0/1.01/3 29/45.84/72
    OriginalReportIn 1,140 1,187 0/1.04/3 32/48.09/68
    CommentOn 629,171 708,409 0/1.13/34 8/45.70/227
    CommentIn 559,890 712,843 0/1.27/57 24/47.57/125
    ErratumIn 142,506 145,098 0/1.02/10 9/44.29/827
    ErratumFor 6,915 7,059 0/1.02/22 8/49.68/566
    ReprintIn 2,580 2,619 0/1.02/4 27/49.96/111
    ReprintOf 2,548 2,558 0/1.00/4 26/49.19/211
    RepublishedFrom 1,459 1,464 0/1.00/2 19/45.46/110
    RepublishedIn 1,267 1,272 0/1.00/2 26/47.19/92
    UpdateIn 5,515 5,547 0/1.01/2 33/50.02/61
    UpdateOf 5,328 5,329 0/1.00/2 31/50.33/100
    PartialRetractionOf 37 38 0/1.03/2 32/115.63/211
    PartialRetractionIn 39 39 0/1.00/1 36/78.69/199
    Cites 2,383,034 73,271,870 0/30.75/4916 22/45.60/198
MeshHeading 22,769,598 237,025,524 0/10.41/112 2/20.07/204
    DescriptorName 22,769,598 237,025,524 0/10.41/112 2/14.05/104
       Descriptor Major 12,306,311 25,020,419 0/2.03/108  
       Descriptor Not Major 22,446,042 208,061,925 0/9.27/63  
    QualifierName 20,279,947 127,529,452 0/6.29/72 5/11.20/29
       Qualifier Major 19,452,753 55,885,180 0/2.87/52  
       Qualifier Not Major 15,790,073 71,644,272 0/4.54/72  
    Descriptor and/or Qualifier Major 22,624,492 78,048,860 0/3.45/108  
PersonalNameSubject 171,555 194,804 0/1.14/28 3/12.70/75
    LastName 171,555 194,804 0/1.14/28 1/7.35/69
    ForeName 166,087 187,836 0/1.13/28 1/4.11/48
    Initials 166,087 187,836 0/1.13/28 1/1.42/6
    Suffix 1,270 1,310 0/1.03/4 1/2.15/10
    LastForeSuffix 171,555 194,804 0/1.14/28 3/11.33/73
    LastInitialsSuffix 171,555 194,804 0/1.14/28 2/8.74/69


Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
NumberOfReferences 1,546,291 1,546,291 0/1.00/1 1/2.10/8
OtherID 4,297,925 4,880,534 0/1.14/6 1/11.03/391
    NLM Source   3,324,412    
OtherAbstract        
    AbstractText 71,278 72,612 0/1.02/5 38/1099.85/4096
    CopyrightInformation 1,855 1,855 0/1.00/1 11/16.80/17
Keyword 2,999,827 11,122,256 0/3.71/245 1/16.36/259
    Keyword Major 2,073,215 5,491,039 0/2.65/105  
    Keyword Not Major 1,006,195 5,631,217 0/5.60/245  
GeneralNote 153,708 287,309 0/1.87/32 2/34.24/1226
SpaceFlightMission 4,221 19,546 0/4.63/12 6/13.87/28
InvestigatorList 37,991      
Investigator: Inclusive (pre-2008 Policy) 8,936 10,291 0/1.15/6 7/31.05/96
    LastName 8,936 10,291 0/1.15/6 2/6.69/16
    ForeName 8,928 10,280 0/1.15/6 1/2.70/9
    Initials 8,928 10,280 0/1.15/6 1/1.85/2
    Suffix 16 16 0/1.00/1 2/2.19/3
    Affiliation 8,935 10,290 0/1.15/6 3/19.81/83
    LastForeSuffix 8,936 10,291 0/1.15/6 3/9.40/19
    LastInitialsSuffix 8,936 10,291 0/1.15/6 3/8.54/18
Investigator: 2008 Policy 29,055 1,825,735 0/62.84/3741 2/12.68/517
    LastName 29,055 1,825,735 0/62.84/3741 1/7.00/158
    ForeName 28,975 1,811,074 0/62.50/3740 1/4.49/46
    Initials 28,975 1,811,074 0/62.50/3740 1/1.19/6
    Suffix 2,126 3,773 0/1.77/20 2/2.30/3
    Affiliation 100 893 0/8.93/132 8/97.82/500
    LastForeSuffix 29,055 1,825,735 0/62.84/3741 2/11.45/163
    LastInitialsSuffix 29,055 1,825,735 0/62.84/3741 2/8.18/159


Element Name Size or Count
Average Record Size in Bytes 1,492
Words in Title Average 11.93
Words in Title Max 341
Words in Abstract Average 186.4
Words in Abstract Max 1,696
AB Size Zero 9,466,725
AB Size < 1,000 5,171,042
AB Size 1,000 - 1,999 8,754,856
AB Size 2,000 - 2,999 914,242
AB Size 3,000 - 3,999 44,227
AB Size 4,000 - 4,999 4,978
AB Size > 5,000 2,372
Number of MH Occurrences with NO SHs 145,333,349
Number of MH Occurrences with ONE SH 64,231,918
Number of MH Occurrences with SHs 91,692,175
Number of MH Type=Geographic 3,943,180


CollectiveName, Author, and Investigator Related Counts Counts
Citations containing ONLY CollectiveName 28,142
Citations containing BOTH CollectiveName and Author LastName 112,458
Citations containing BOTH CollectiveName and Investigator LastName 29,021
Citations containing BOTH Author LastName and Investigator LastName 36,079
Citations containing Investigator LastName and Owned by NASA 3,904
Both Investigator and Author Found 36,079
Investigator Found Without Collective 8,970


MedlineCitation Status Counts
Completed 0
In-Process 0
In-Data-Review 0
PubMed-not-MEDLINE 1,582,833
OLDMEDLINE 0
MEDLINE 22,775,609


Article PubModel Counts
Print-Electronic 3,879,332
Electronic-Print 28,022
Print 19,923,739
Electronic-eCollection 152,536
Electronic 374,813


JournalIssue CitedMedium Counts
Internet 5,300,194
Print 19,058,248


Owner MedlineCitation GeneralNote Keyword OtherAbstract
NLM 24,224,717 9,056 1,992,445 0
NASA 10,813 4,616 12,958 409
PIP 38,881 63,797 68,870 53,164
KIE 31,974 209,616 73,817 3,026
HSR 8,378 224 0 0
HMD 43,679 0 0 0
SIS 0 0 0 0
NOTNLM 0 0 852,185 0
AIDS 0 0 0 5,342
Publisher 0 0 0 10,671


Grant Country Occurrences
United States 5,395,986
United Kingdom 318,209
Italy 11,135
Canada 51,024
Austria 4,656
International 3,276
Ireland 23


CitationSubsets Counts
AIM 2,063,893
B 10,445
C 7,570
D 552,483
E 93,216
F 8,016
H 268,347
IM 19,456,306
J 68,958
K 24,175
N 652,482
OM 2,010,938
Q 201,855
QIS 8,341
QO 24,428
R 3,602
S 189,688
T 59,149
X 192,506


Publication Types Counts
Addresses 4,608
Autobiography 3,122
Bibliography 15,859
Biography 169,199
Case Reports 1,749,270
Classical Article 6,000
Clinical Conference 6,724
Clinical Study 0
Clinical Trial 494,208
Clinical Trial, Phase I 15,174
Clinical Trial, Phase II 24,557
Clinical Trial, Phase III 10,217
Clinical Trial, Phase IV 1,073
Comment 629,171
Comparative Study 1,710,921
Congresses 62,161
Consensus Development Conference 9,543
Consensus Development Conference, NIH 732
Controlled Clinical Trial 89,646
Corrected and Republished Article 1,459
Dictionary 537
Directory 6,626
Duplicate Publication 1,399
Editorial 372,611
English Abstract 1,773,448
Evaluation Studies 209,046
Festschrift 1,516
Government Publications 190
Guideline 15,583
Historical Article 322,811
   Interactive Tutorial 226
   Interview 25,860
   Introductory Journal Article 35,088
   Journal Article 22,778,222
   Lectures 6,168
   Legal Cases 10,565
   Legislation 1,668
   Letter 872,514
   Meta-Analysis 58,585
   Multicenter Study 188,522
   News 169,944
   Newspaper Article 18,059
   Observational Study 14,937
   Overall 27,749
   Patient Education Handout 4,336
   Periodical Index 325
   Personal Narratives 1,799
   Portraits 41,939
   Practice Guideline 20,489
   Pragmatic Clinical Trial 196
   Published Erratum 6,925
   Randomized Controlled Trial 399,524
   Research Support, American Recovery and Reinvestment Act 1,700
   Research Support, N.I.H., Extramural 827,454
   Research Support, N.I.H., Intramural 39,781
   Research Support, Non-U.S. Gov't 6,021,902
   Research Support, U.S. Gov't, Non-P.H.S. 706,187
   Research Support, U.S. Gov't, P.H.S. 1,450,555
   Retracted Publication 3,988
   Retraction of Publication 3,837
   Review 2,007,116
   Scientific Integrity Review 207
   Technical Report 2,382
   Twin Study 6,695
   Validation Studies 73,922
   Video-Audio Media 8,363
   Webcasts 334


ELocationId EIdType Counts
   DOI or PII, MedlinePgn Not Found 6,451
   DOI or PII, MedlinePgn Found 4,773,340
   DOI and PII, MedlinePgn Not Found 25,601
   DOI and PII, MedlinePgn Found 517,649


PMID Versioning Counts
Version 1 24,358,072
Version 2 313
Version 3 37
Version 4 8
Version 5 3
Version 6 3
Version 7 2
Version 8 2
Version 9 1
Version 10 1