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2017 MEDLINE/PubMed Baseline Excluding OLD MEDLINE Data: 24,748,457 Citations Found

Element Name Citations Occurrences Min/Avg/Max
Occurrences
Min/Avg/Max
Length
PMID 24,748,457 24,748,457 1/1.00/1 1/7.55/8
DateCreated 24,748,457 24,748,457 1/1.00/1 8/8.00/8
DateCompleted 23,397,746 23,397,746 0/1.00/1 8/8.00/8
DateRevised 24,748,457 24,748,457 1/1.00/1 8/8.00/8
ISSN 24,341,281 24,341,281 0/1.00/1 9/9.00/9
   IssnType=Electronic   7,021,697    
   IssnType=Print   17,319,584    
Volume 24,174,101 24,174,101 0/1.00/1 1/2.23/156
Issue 22,724,289 22,724,289 0/1.00/1 1/1.44/131
PubDate 24,748,457 24,748,457 1/1.00/1 4/7.61/38
Title 24,748,457 24,748,457 1/1.00/1 2/36.69/239
ISOAbbreviation 24,746,588 24,746,588 0/1.00/1 1/16.54/96
ArticleTitle 24,744,573 24,744,573 0/1.00/1 1/89.50/1999
MedlinePgn 24,520,634 24,520,634 0/1.00/1 1/5.72/173
ELocationID 7,042,282 8,049,655 0/1.14/2 0/0.00/0
    Valid Yes   8,049,634    
    Valid No   21    
    EIdType=doi   6,961,717    
    EIdType=pii   1,087,938    
Abstract        
    AbstractText 16,806,115 16,806,115 0/1.00/1 1/1251.56/19936
    CopyrightInformation 2,316,055 2,316,055 0/1.00/1 1/59.34/1043
    Identified as Structured Abstract 3,457,468      
       AbstractText 3,457,468 14,585,261 1/4.22/22  
       NLMCategory: UNLABELLED 88,587 88,587    
       NLMCategory: BACKGROUND 1,562,906 1,602,457    
       NLMCategory: OBJECTIVE 2,221,488 2,230,299    
       NLMCategory: METHODS 3,137,793 3,885,282    
       NLMCategory: RESULTS 3,239,217 3,246,128    
       NLMCategory: CONCLUSIONS 3,383,500 3,488,691    
       NLMCategory: UNASSIGNED 28,408 43,746    
Author 24,222,773 97,426,093 0/4.02/5425 1/12.65/498
    Valid Yes   97,405,574    
    Valid No   20,519    
    LastName 24,192,057 97,244,104 0/4.02/5399 1/6.67/131
    ForeName 24,019,475 96,623,183 0/4.02/5399 1/4.55/162
    Initials 24,180,991 97,179,841 0/4.02/5399 1/1.41/11
    Suffix 399,915 423,318 0/1.06/34 1/2.21/39
    CollectiveName 166,768 181,933 0/1.09/44 1/41.63/498
    LastForeSuffix 24,192,072 97,244,160 0/4.02/5399 1/11.19/244
    LastInitialsSuffix 24,192,058 97,244,106 0/4.02/5399 1/8.08/133
    Affiliation 16,083,292 28,347,983 0/1.76/6922 1/115.39/7910
    Identifier 88,285 145,593 0/1.65/77 16/30.34/54
Language 24,748,457 24,806,854 1/1.00/6 3/3.00/3
Grant 2,568,563 7,107,395 0/2.77/357 8/38.61/114
    GrantID 2,463,223 6,908,240 0/2.80/357 1/10.89/66
    Acronym 2,234,147 6,425,913 0/2.88/357 2/2.00/6
    Agency 2,568,543 7,107,048 0/2.77/357 2/13.24/84
    Country 2,568,563 7,107,395 0/2.77/357 4/12.97/14
PublicationType 24,748,457 44,818,195 1/1.81/10 4/18.34/56
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 2,805,576 2,805,576 0/1.00/1 1/79.75/1159
Country 24,748,037 24,748,037 0/1.00/1 4/10.04/35
MedlineTA 24,748,289 24,748,289 0/1.00/1 1/15.47/96
NlmUniqueID 24,748,457 24,748,457 1/1.00/1 7/7.36/9
ISSNLinking 24,399,259 24,399,259 0/1.00/1 8/9.00/9
Chemical 11,992,247 46,910,775 0/3.91/58 4/21.26/245
    RegistryNumber 11,992,247 46,910,775 0/3.91/58 1/4.67/15
    NameOfSubstance 11,992,247 46,910,775 0/3.91/58 2/16.59/244
SupplMeshName 74,719 81,713 0/1.09/10 5/24.07/177
    Type=Disease 55,796 58,159 0/1.04/5 5/28.36/177
    Type=Protocol 18,987 23,554 0/1.24/10 5/13.47/43
CitationSubset 22,193,023 25,384,671 0/1.14/6 1/1.99/3
GeneSymbol 59,507 126,193 0/2.12/25 1/4.51/41
CommentsCorrections 3,822,016 85,806,106 0/22.45/4916 9/45.67/955
    RetractionOf 4,795 5,150 0/1.07/20 23/93.99/371
    RetractionIn 4,690 4,751 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 597,379 763,386 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 2,750 2,787 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 2,611,037 84,067,217 0/32.20/4916 22/45.65/198
MeshHeading 21,604,107 236,992,361 0/10.97/68 2/20.44/204
    DescriptorName 21,604,107 236,992,361 0/10.97/68 2/14.16/104
       Descriptor Major 10,860,138 18,989,359 0/1.75/37  
       Descriptor Not Major 21,505,172 214,376,559 0/9.97/63  
    QualifierName 20,299,992 132,006,980 0/6.50/72 5/11.27/29
       Qualifier Major 19,460,625 57,392,900 0/2.95/52  
       Qualifier Not Major 16,381,236 74,614,080 0/4.55/72  
    Descriptor and/or Qualifier Major 21,474,512 73,363,070 0/3.42/50  
PersonalNameSubject 147,634 170,434 0/1.15/28 3/12.39/75
    LastName 147,634 170,434 0/1.15/28 1/7.34/69
    ForeName 143,233 164,614 0/1.15/28 1/3.79/48
    Initials 143,233 164,614 0/1.15/28 1/1.42/6
    Suffix 1,172 1,208 0/1.03/4 2/2.36/20
    LastForeSuffix 147,634 170,434 0/1.15/28 3/11.02/73
    LastInitialsSuffix 147,634 170,434 0/1.15/28 2/8.73/69
NumberOfReferences 1,538,127 1,538,127 0/1.00/1 1/2.10/8
OtherID 3,509,313 4,114,298 0/1.17/6 1/10.37/36
    NLM Source   3,802,458    
OtherAbstract        
    AbstractText 79,550 82,234 0/1.03/6 1/1280.86/23744
    CopyrightInformation 0 0 0/0.00/0 0/0.00/0
Keyword 2,050,799 11,570,575 0/5.64/245 1/15.85/638
    Keyword Major 80,769 523,587 0/6.48/50  
    Keyword Not Major 2,049,593 11,046,988 0/5.39/245  
GeneralNote 155,444 289,102 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 1,617
   
Words in Title Average 12.31 Max 341
Words in Abstract Average 189.96 Max 3,165
AB Size Zero 7,942,385
AB Size < 1,000 5,600,871
AB Size 1,000 - 1,999 10,043,919
AB Size 2,000 - 2,999 1,098,309
AB Size 3,000 - 3,999 52,713
AB Size 4,000 - 4,999 6,828
AB Size > 5,000 3,432
Number of MH Occurrences with NO SHs 142,517,129
Number of MH Occurrences with ONE SH 65,711,242
Number of MH Occurrences with SHs 94,475,232
Number of MH Type=Geographic 3,626,443
CollectiveName, Author, and Investigator Related Counts
Citations containing ONLY CollectiveName 30,701
Citations containing BOTH CollectiveName and Author LastName 136,067
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 0
Investigator Found Without Collective 0
   
MedlineCitation Status Counts:  
   Completed 0
   In-Process 183,171
   In-Data-Review 664,295
   PubMed-not-MEDLINE 1,787,658
   OLDMEDLINE 0
   MEDLINE 21,610,733
   Publisher 502,600
Article PubModel Counts:  
   Print-Electronic 5,073,995
   Electronic-Print 34,400
   Print 18,802,251
   Electronic-eCollection 295,780
   Electronic 542,031 24,748,457
JournalIssue CitedMedium Counts:  
   Internet 7,210,049
   Print 17,538,408
Owner Counts:
Owner MedlineCitation GeneralNote Keyword OtherAbstract
NLM 24,613,395 10,823 0 0
NASA 10,886 4,616 12,958 409
PIP 39,664 63,792 68,850 53,145
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 6,638,140
   International 9,429
   Austria 5,868
   United Kingdom 379,521
   None 1,315
   Canada 61,881
   Italy 11,218
   Ireland 23
CitationSubsets Counts:
   AIM 2,126,577
   B 10,444
   C 7,570
   D 565,080
   E 95,726
   F 8,016
   H 276,605
   IM 20,826,374
   J 68,938
   K 25,500
   N 679,419
   OM 0
   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 3,177
   Bibliography 14,799
   Biography 145,047
   Case Reports 1,773,374
   Classical Article 6,086
   Clinical Conference 6,893
   Clinical Study 2,345
   Clinical Trial 500,637
   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 1,746,605
   Congresses 63,300
   Consensus Development Conference 9,965
   Consensus Development Conference, NIH 748
   Controlled Clinical Trial 90,882
   Corrected and Republished Article 1,485
   Dataset 245
   Dictionary 539
   Directory 6,629
   Duplicate Publication 1,352
   Editorial 416,254
   English Abstract 1,670,421
   Evaluation Studies 219,742
   Festschrift 1,563
   Government Publications 190
   Guideline 15,757
   Historical Article 310,489
Publication Types Counts (continued):
   Interactive Tutorial 230
   Interview 27,166
   Introductory Journal Article 40,284
   Journal Article 23,035,507
   Lectures 6,320
   Legal Cases 10,720
   Legislation 1,670
   Letter 936,003
   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 43,924
   Practice Guideline 21,433
   Pragmatic Clinical Trial 381
   Published Erratum 20,509
   Randomized Controlled Trial 422,606
   Research Support, American Recovery and Reinvestment Act 1,925
   Research Support, N.I.H., Extramural 923,561
   Research Support, N.I.H., Intramural 43,941
   Research Support, Non-U.S. Gov't 6,530,670
   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 4,690
   Retraction of Publication 4,917
   Review 2,163,987
   Scientific Integrity Review 227
   Technical Report 2,525
   Twin Study 7,146
   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 5,943,150
   DOI and PII, MedlinePgn Not Found 80,543
   DOI and PII, MedlinePgn Found 926,828
PMID Versioning Counts:
Version 1 24,747,852
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