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2017 MEDLINE/PubMed Baseline: 26,759,399 Citations Found

Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID 26,759,399 26,759,399 1/1.00/1 1/7.59/8
DateCreated 26,759,399 26,759,399 1/1.00/1 8/8.00/8
DateCompleted 25,408,688 25,408,688 0/1.00/1 8/8.00/8
DateRevised 26,759,399 26,759,399 1/1.00/1 8/8.00/8
ISSN 26,182,629 26,182,629 0/1.00/1 9/9.00/9
   IssnType=Electronic   7,026,158    
   IssnType=Print   19,156,471    
Volume 26,173,214 26,173,214 0/1.00/1 1/2.22/156
Issue 23,907,072 23,907,072 0/1.00/1 1/1.45/131
PubDate 26,759,399 26,759,399 1/1.00/1 4/7.62/38
Title 26,759,399 26,759,399 1/1.00/1 2/36.59/239
ISOAbbreviation 26,757,525 26,757,525 0/1.00/1 1/16.55/96
ArticleTitle 26,755,515 26,755,515 0/1.00/1 1/87.70/1999
MedlinePgn 26,531,576 26,531,576 0/1.00/1 1/5.70/173
ELocationID 7,042,876 8,050,249 0/1.14/2 0/0.00/0
    Valid Yes   8,050,228    
    Valid No   21    
    EIdType=doi   6,962,311    
    EIdType=pii   1,087,938    
Abstract        
    AbstractText 16,820,914 16,820,914 0/1.00/1 1/1251.27/19936
    CopyrightInformation 2,316,055 2,316,055 0/1.00/1 1/59.34/1043
    Identified as Structured Abstract 3,457,471      
       AbstractText 3,457,471 14,585,270 1/4.22/22  
       NLMCategory: UNLABELLED 88,590 88,590    
       NLMCategory: BACKGROUND 1,562,906 1,602,457    
       NLMCategory: OBJECTIVE 2,221,488 2,230,299    
       NLMCategory: METHODS 3,137,794 3,885,285    
       NLMCategory: RESULTS 3,239,218 3,246,129    
       NLMCategory: CONCLUSIONS 3,383,501 3,488,692    
       NLMCategory: UNASSIGNED 28,409 43,747    
Author 26,187,024 100,799,694 0/3.85/5425 1/12.58/498
    Valid Yes   100,779,175    
    Valid No   20,519    
    LastName 26,156,302 100,617,692 0/3.85/5399 1/6.68/131
    ForeName 25,963,800 99,949,435 0/3.85/5399 1/4.46/162
    Initials 26,125,316 100,506,092 0/3.85/5399 1/1.41/11
    Suffix 445,314 471,484 0/1.06/34 1/2.19/39
    CollectiveName 166,781 181,946 0/1.09/44 1/41.63/498
    LastForeSuffix 26,156,317 100,617,748 0/3.85/5399 1/11.12/244
    LastInitialsSuffix 26,156,303 100,617,694 0/3.85/5399 1/8.10/133
    Affiliation 16,085,100 28,349,791 0/1.76/6922 1/115.39/7910
    Identifier 88,285 145,593 0/1.65/77 16/30.34/54
Language 26,759,399 26,824,177 1/1.00/6 3/3.00/3
Grant 2,568,659 7,107,570 0/2.77/357 8/38.61/114
    GrantID 2,463,318 6,908,414 0/2.80/357 1/10.89/66
    Acronym 2,234,191 6,425,980 0/2.88/357 2/2.00/6
    Agency 2,568,639 7,107,223 0/2.77/357 2/13.24/84
    Country 2,568,659 7,107,570 0/2.77/357 4/12.97/14
PublicationType 26,759,399 46,919,074 1/1.75/10 4/18.19/56
DataBank 340,013 346,651 0/1.02/33 2/106.54/120007
    DataBankName 340,013 346,651 0/1.02/33 1/9.09/18
    AccessionNumber 340,013 4,208,365 0/12.38/10000 1/8.03/56
ArticleDate 5,946,206 5,946,206 0/1.00/1 8/8.00/8
VernacularTitle 3,563,059 3,563,059 0/1.00/1 1/77.93/1159
Country 26,758,818 26,758,818 0/1.00/1 4/10.00/35
MedlineTA 26,759,231 26,759,231 0/1.00/1 1/15.51/96
NlmUniqueID 26,759,399 26,759,399 1/1.00/1 7/7.35/9
ISSNLinking 26,225,207 26,225,207 0/1.00/1 8/9.00/9
Chemical 12,708,690 48,636,180 0/3.83/58 4/21.15/245
    RegistryNumber 12,708,690 48,636,180 0/3.83/58 1/4.68/15
    NameOfSubstance 12,708,690 48,636,180 0/3.83/58 2/16.46/244
SupplMeshName 93,804 101,217 0/1.08/10 5/24.10/177
    Type=Disease 74,785 77,567 0/1.04/5 5/27.35/177
    Type=Protocol 19,083 23,650 0/1.24/10 5/13.47/43
CitationSubset 24,203,965 27,421,447 0/1.13/6 1/1.99/3
GeneSymbol 59,507 126,193 0/2.12/25 1/4.51/41
CommentsCorrections 3,889,225 86,224,606 0/22.17/4916 9/45.67/955
    RetractionOf 4,795 5,150 0/1.07/20 23/93.99/371
    RetractionIn 4,691 4,752 0/1.01/3 26/56.88/341
    SummaryForPatientsIn 1,230 1,246 0/1.01/3 9/45.95/72
    OriginalReportIn 1,190 1,237 0/1.04/3 32/48.04/68
    CommentOn 673,565 762,544 0/1.13/34 9/45.73/227
    CommentIn 597,476 763,484 0/1.28/56 22/47.40/125
    ErratumIn 157,827 160,927 0/1.02/10 12/44.61/955
    ErratumFor 18,818 19,259 0/1.02/45 21/52.20/955
    ReprintIn 2,758 2,795 0/1.01/4 27/49.87/111
    ReprintOf 2,804 2,816 0/1.00/4 26/48.90/211
    RepublishedFrom 1,482 1,487 0/1.00/2 19/45.44/110
    RepublishedIn 1,271 1,276 0/1.00/2 26/47.16/92
    UpdateIn 5,979 6,011 0/1.01/2 33/50.29/61
    UpdateOf 6,009 6,010 0/1.00/2 31/50.76/100
    PartialRetractionOf 0 0 0/0.00/0 0/0.00/0
    PartialRetractionIn 0 0 0/0.00/0 0/0.00/0
    AssociatedPublication 2 2 0/1.00/1 53/53.00/53
    Cites 2,678,153 84,485,610 0/31.55/4916 22/45.65/198
MeshHeading 23,615,049 247,415,856 0/10.48/112 2/20.14/204
    DescriptorName 23,615,049 247,415,856 0/10.48/112 2/14.08/104
       Descriptor Major 12,766,145 25,855,614 0/2.03/108  
       Descriptor Not Major 23,292,327 217,835,146 0/9.35/63  
    QualifierName 21,081,672 133,186,628 0/6.32/72 5/11.27/29
       Qualifier Major 20,229,932 58,539,473 0/2.89/52  
       Qualifier Not Major 16,412,133 74,647,155 0/4.55/72  
    Descriptor and/or Qualifier Major 23,470,098 81,363,795 0/3.47/108  
PersonalNameSubject 174,824 198,363 0/1.13/28 3/12.81/75
    LastName 174,824 198,363 0/1.13/28 1/7.35/69
    ForeName 169,406 191,436 0/1.13/28 1/4.22/48
    Initials 169,406 191,436 0/1.13/28 1/1.42/6
    Suffix 1,271 1,311 0/1.03/4 1/2.35/20
    LastForeSuffix 174,824 198,363 0/1.13/28 3/11.44/73
    LastInitialsSuffix 174,824 198,363 0/1.13/28 2/8.73/69
NumberOfReferences 1,546,287 1,546,287 0/1.00/1 1/2.10/8
OtherID 4,790,820 5,451,465 0/1.14/6 1/11.17/391
    NLM Source   3,895,338    
OtherAbstract        
    AbstractText 79,569 82,253 0/1.03/6 1/1280.83/23744
    CopyrightInformation 0 0 0/0.00/0 0/0.00/0
Keyword 4,043,244 16,538,206 0/4.09/245 1/16.16/638
    Keyword Major 2,073,214 5,491,025 0/2.65/105  
    Keyword Not Major 2,049,612 11,047,181 0/5.39/245  
GeneralNote 155,643 289,301 0/1.86/32 2/34.22/1226
SpaceFlightMission 4,221 19,546 0/4.63/12 6/13.87/28
InvestigatorList 44,900      
Investigator: Inclusive (pre-2008 Policy) 8,934 10,289 0/1.15/6 7/31.05/96
    LastName 8,934 10,289 0/1.15/6 2/6.69/16
    ForeName 8,926 10,278 0/1.15/6 1/2.70/9
    Initials 8,926 10,278 0/1.15/6 1/1.85/2
    Suffix 16 16 0/1.00/1 2/2.19/3
    Affiliation 8,933 10,288 0/1.15/6 3/19.81/83
    LastForeSuffix 8,934 10,289 0/1.15/6 3/9.40/19
    LastInitialsSuffix 8,934 10,289 0/1.15/6 3/8.54/18
Investigator: 2008 Policy 35,966 2,278,343 0/63.35/3741 1/12.96/517
    LastName 35,966 2,278,343 0/63.35/3741 1/7.01/158
    ForeName 35,872 2,261,264 0/63.04/3740 1/4.56/190
    Initials 35,872 2,261,253 0/63.04/3740 1/1.19/8
    Suffix 2,495 4,520 0/1.81/20 2/2.30/6
    Affiliation 356 7,578 0/21.29/596 3/73.08/500
    Identifier 0 0 0/0.00/0 0/0.00/0
    LastForeSuffix 35,966 2,278,343 0/63.35/3741 1/11.53/198
    LastInitialsSuffix 35,966 2,278,343 0/63.35/3741 1/8.19/159
   
Average Record Size in Bytes 1,528
   
Words in Title Average 12.07 Max 341
Words in Abstract Average 189.92 Max 3,165
AB Size Zero 9,938,528
AB Size < 1,000 5,609,998
AB Size 1,000 - 1,999 10,049,049
AB Size 2,000 - 2,999 1,098,774
AB Size 3,000 - 3,999 52,772
AB Size 4,000 - 4,999 6,841
AB Size > 5,000 3,437
Number of MH Occurrences with NO SHs 151,773,861
Number of MH Occurrences with ONE SH 66,865,978
Number of MH Occurrences with SHs 95,641,995
Number of MH Type=Geographic 3,725,096
CollectiveName, Author, and Investigator Related Counts
Citations containing ONLY CollectiveName 30,707
Citations containing BOTH CollectiveName and Author LastName 136,074
Citations containing BOTH CollectiveName and Investigator LastName 35,950
Citations containing BOTH Author LastName and Investigator LastName 42,628
Citations containing Investigator LastName and Owned by NASA 3,904
Both Investigator and Author Found 42,628
Investigator Found Without Collective 8,950
   
MedlineCitation Status Counts:  
   Completed 0
   In-Process 183,171
   In-Data-Review 664,295
   PubMed-not-MEDLINE 1,787,658
   OLDMEDLINE 0
   MEDLINE 23,621,675
   Publisher 502,600
Article PubModel Counts:  
   Print-Electronic 5,073,995
   Electronic-Print 34,400
   Print 20,813,193
   Electronic-eCollection 295,780
   Electronic 542,031 26,759,399
JournalIssue CitedMedium Counts:  
   Internet 7,214,809
   Print 19,544,590
Owner Counts:
Owner MedlineCitation GeneralNote Keyword OtherAbstract
NLM 26,624,284 11,018 1,992,445 0
NASA 10,886 4,616 12,958 409
PIP 39,717 63,796 68,869 53,164
KIE 31,991 209,626 73,817 3,033
HSR 8,792 245 0 0
HMD 43,729 0 0 0
SIS 0 0 0 0
NOTNLM 0 0 1,895,603 0
AIDS 0 0 0 5,342
Publisher 0 0 0 20,305
Grant Country Occurrences:
   United States 6,638,208
   International 9,429
   Austria 5,868
   United Kingdom 379,521
   None 1,422
   Canada 61,881
   Italy 11,218
   Ireland 23
CitationSubsets Counts:
   AIM 2,126,577
   B 10,444
   C 7,570
   D 580,711
   E 95,726
   F 8,016
   H 276,605
   IM 20,826,374
   J 68,957
   K 25,500
   N 689,603
   OM 2,010,942
   Q 201,910
   QIS 10,965
   QO 24,428
   R 3,604
   S 191,313
   T 66,434
   X 195,768
Publication Types Counts:
   Addresses 4,781
   Autobiography 3,249
   Bibliography 15,890
   Biography 172,281
   Case Reports 1,801,712
   Classical Article 6,086
   Clinical Conference 6,896
   Clinical Study 2,345
   Clinical Trial 500,640
   Clinical Trial, Phase I 16,140
   Clinical Trial, Phase II 26,159
   Clinical Trial, Phase III 11,374
   Clinical Trial, Phase IV 1,225
   Comment 673,566
   Comparative Study 1,746,613
   Congresses 63,312
   Consensus Development Conference 9,965
   Consensus Development Conference, NIH 748
   Controlled Clinical Trial 90,885
   Corrected and Republished Article 1,485
   Dictionary 539
   Directory 6,629
   Duplicate Publication 1,352
   Editorial 416,255
   English Abstract 1,670,463
   Evaluation Studies 219,744
   Festschrift 1,563
   Government Publications 190
   Guideline 15,757
   Historical Article 335,839
Publication Types Counts (continued):
   Interactive Tutorial 230
   Interview 27,166
   Introductory Journal Article 40,284
   Journal Article 25,045,994
   Lectures 6,323
   Legal Cases 10,721
   Legislation 1,670
   Letter 936,013
   Meta-Analysis 69,577
   Multicenter Study 204,689
   News 180,106
   Newspaper Article 18,283
   Observational Study 25,855
   Overall 27,770
   Patient Education Handout 4,519
   Periodical Index 327
   Personal Narratives 2,465
   Portraits 43,927
   Practice Guideline 21,433
   Pragmatic Clinical Trial 381
   Published Erratum 20,509
   Randomized Controlled Trial 422,608
   Research Support, American Recovery and Reinvestment Act 1,925
   Research Support, N.I.H., Extramural 923,561
   Research Support, N.I.H., Intramural 43,942
   Research Support, Non-U.S. Gov't 6,530,671
   Research Support, U.S. Gov't, Non-P.H.S. 745,895
   Research Support, U.S. Gov't, P.H.S. 1,455,824
   Retracted Publication 4,691
   Retraction of Publication 4,917
   Review 2,172,197
   Scientific Integrity Review 227
   Technical Report 2,525
   Twin Study 7,147
   Validation Studies 79,496
   Video-Audio Media 10,861
   Webcasts 417
ELocationId EIdType Counts:
   DOI or PII, MedlinePgn Not Found 91,761
   DOI or PII, MedlinePgn Found 5,943,744
   DOI and PII, MedlinePgn Not Found 80,543
   DOI and PII, MedlinePgn Found 926,828
PMID Versioning Counts:
Version 1 26,758,794
Version 2 523
Version 3 62
Version 4 8
Version 5 3
Version 6 3
Version 7 2
Version 8 2
Version 9 1
Version 10 1