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United States National Library of Medicine National Institutes of Health

2007 MEDLINE®/PubMed® Baseline: 16,120,074 Citations Found

Element Name Citations Occurrences Min/Avg/Max Occurrences Min/Avg/Max Length
PMID 16,120,074 16,120,074 1/1.00/1 1/7.32/8
DateCreated 16,120,074 16,120,074 1/1.00/1 8/8.00/8
DateCompleted 16,120,074 16,120,074 1/1.00/1 8/8.00/8
DateRevised 15,377,823 15,377,823 0/1.00/1 8/8.00/8
ISSN 15,886,872 15,886,872 0/1.00/1 9/9.00/9
Volume 15,793,926 15,793,926 0/1.00/1 1/2.22/50
Issue 14,570,067 14,570,067 0/1.00/1 1/1.44/30
PubDate 16,120,074 16,120,074 1/1.00/1 4/7.36/55
Title 16,120,074 16,120,074 1/1.00/1 2/37.04/595
ISOAbbreviation 8,340,623 8,340,623 0/1.00/1 3/16.57/61
ArticleTitle 16,120,074 16,120,074 1/1.00/1 2/82.91/1086
MedlinePgn 16,120,074 16,120,074 1/1.00/1 1/5.64/94
Abstract        
    AbstractText 8,293,368 8,293,368 0/1.00/1 50/1169.60/9992
    CopyrightInformation 204,488 204,488 0/1.00/1 4/35.88/1000
Affiliation 7,237,675 7,237,675 0/1.00/1 1/94.29/274
Author 15,775,913 49,845,547 0/3.16/744 1/11.21/375
    Author Valid Yes   49,840,842    
    Author Valid No   4,705    
    LastName 15,759,357 49,792,823 0/3.16/743 1/6.93/163
    ForeName 15,739,196 49,723,339 0/3.16/743 1/2.81/56
    Initials 15,739,195 49,723,330 0/3.16/743 1/1.44/8
    Suffix 320,424 339,284 0/1.06/5 2/2.18/3
    CollectiveName 48,969 52,724 0/1.08/25 1/42.64/375
    LastForeSuffix 15,759,357 49,792,823 0/3.16/743 1/9.74/163
    LastInitialsSuffix 15,759,357 49,792,823 0/3.16/743 1/8.38/163
Language 16,120,074 16,146,325 1/1.00/4 3/3.00/3
Grant 1,240,934 2,167,646 0/1.75/62 4/15.28/49
    GrantID 1,236,464 2,162,645 0/1.75/62 1/8.95/44
    Acronym 1,204,805 2,101,000 0/1.74/62 2/2.00/2
    Agency 1,240,934 2,167,646 0/1.75/62 2/4.42/14
DataBank 157,709 160,091 0/1.02/4 6/60.80/47047
    DataBankName 157,709 160,091 0/1.02/4 3/6.67/18
    AccessionNumber 157,709 1,180,338 0/7.48/5880 2/7.34/14
PublicationType 16,120,074 28,399,515 1/1.76/10 4/17.66/40
ArticleDate 399,997 399,997 0/1.00/1 8/8.00/8
VernacularTitle 3,130,155 3,130,155 0/1.00/1 1/79.36/614
Country 16,120,074 16,120,074 1/1.00/1 4/10.16/35
MedlineTA 16,120,074 16,120,074 1/1.00/1 1/15.44/96
NlmUniqueID 16,120,074 16,120,074 1/1.00/1 7/7.17/9
Chemical 8,294,395 30,560,672 0/3.68/57 4/20.48/250
    RegistryNumber 8,294,395 30,560,672 0/3.68/57 1/4.52/14
    NameOfSubstance 8,294,395 30,560,672 0/3.68/57 2/15.96/249
CitationSubset 15,944,867 18,466,305 0/1.16/6 1/1.98/3
GeneSymbol 59,509 126,195 0/2.12/25 1/4.51/41
CommentsCorrections 649,543 786,322 0/1.21/40 9/45.63/835
    RetractionOf 681 780 0/1.15/8 32/94.13/344
    RetractionIn 756 766 0/1.01/2 27/71.36/341
    SummaryForPatientsIn 493 506 0/1.03/3 29/45.37/55
    OriginalReportIn 490 506 0/1.03/3 32/47.95/68
    CommentOn 316,253 351,741 0/1.11/27 19/45.27/98
Element Name Citations Occurrences Min/Avg/Max
Occurrences		 Min/Avg/Max
Length
    CommentIn 282,827 355,472 0/1.26/40 25/47.10/118
    ErratumIn 68,296 69,288 0/1.01/3 9/39.00/835
    ErratumFor 982 990 0/1.01/3 30/45.63/104
    ReprintIn 211 214 0/1.01/3 33/50.60/72
    ReprintOf 180 180 0/1.00/1 33/47.80/77
    RepublishedFrom 1,148 1,152 0/1.00/2 19/44.84/110
    RepublishedIn 939 944 0/1.01/2 26/46.81/89
    UpdateIn 1,946 1,960 0/1.01/2 37/47.86/58
    UpdateOf 1,823 1,823 0/1.00/1 36/48.01/56
    PartialRetractionOf 0 0 0/0.00/0 0/0.00/0
    PartialRetractionIn 0 0 0/0.00/0 0/0.00/0
MeshHeading 15,806,221 152,343,652 0/9.64/94 2/19.61/154
    DescriptorName 15,806,221 152,343,652 0/9.64/94 2/13.69/104
       Descriptor Major 8,165,067 15,225,755 0/1.86/94  
       Descriptor Not Major 14,782,394 137,117,897 0/9.28/61  
    QualifierName 13,788,607 80,234,220 0/5.82/64 5/11.25/29
       Qualifier Major 13,135,683 34,922,577 0/2.66/28  
       Qualifier Not Major 10,623,591 45,311,643 0/4.27/63  
    Descriptor and/or Qualifier Major 15,677,320 48,867,875 0/3.12/94  
NumberOfReferences 1,224,043 1,224,043 0/1.00/1 1/2.08/4
PersonalNameSubject 141,566 158,602 0/1.12/28 3/11.79/74
    LastName 141,566 158,602 0/1.12/28 2/7.46/69
    ForeName 134,360 150,196 0/1.12/28 1/3.13/41
    Initials 134,358 150,193 0/1.12/28 1/1.43/6
    Suffix 1,055 1,082 0/1.03/3 1/2.26/12
    LastForeSuffix 141,566 158,602 0/1.12/28 3/10.44/72
    LastInitialsSuffix 141,566 158,602 0/1.12/28 3/8.83/71
OtherID 1,209,692 1,302,015 0/1.08/5 1/13.08/391
OtherAbstract        
    AbstractText 61,933 61,973 0/1.00/2 60/1284.24/4096
    CopyrightInformation 1,856 1,856 0/1.00/1 11/16.80/17
Keyword 1,904,741 6,198,419 0/3.25/105 2/16.79/123
    Keyword Major 1,831,048 5,135,901 0/2.80/105  
    Keyword Not Major 153,309 1,062,518 0/6.93/88  
GeneralNote 141,618 273,412 0/1.93/32 2/34.46/704
SpaceFlightMission 4,144 19,202 0/4.63/12 6/13.88/28
Investigator 8,953 10,308 0/1.15/6 7/31.05/96
    LastName 8,953 10,308 0/1.15/6 2/6.70/16
    ForeName 8,945 10,297 0/1.15/6 1/2.70/9
    Initials 8,945 10,297 0/1.15/6 1/1.84/2
    Suffix 16 16 0/1.00/1 2/2.19/3
    Affiliation 8,952 10,307 0/1.15/6 3/19.81/83
    LastForeSuffix 8,953 10,308 0/1.15/6 3/9.40/19
    LastInitialsSuffix 8,953 10,308 0/1.15/6 3/8.54/18

 

Average Record Size in Bytes 1,191

 

Words in Title Average 11.44 Max 249
Words in Abstract Average 178.27 Max 1,666

 

AB Size Zero 7,826,706
AB Size < 1,000 3,360,502
AB Size 1,000 - 1,999 4,448,874
AB Size 2,000 - 2,999 459,727
AB Size 3,000 - 3,999 21,440
AB Size 4,000 - 4,999 2,146
AB Size > 5,000 679

 

Number of MH Occurrences with NO SHs 92,671,872
Number of MH Occurrences with ONE SH 43,624,424
Number of MH Occurrences with SHs 59,671,780

CollectiveName Counts:

Number of Citations containing ONLY CollectiveName 16,556
Number of Citations containing BOTH CollectiveName AND LastName 32,413

MedlineCitation Status Counts:

   Completed 0
   In-Process 0
   In-Data-Review 0
   PubMed-not-MEDLINE 175,207
   OLDMEDLINE 509,161
   MEDLINE 15,435,706

Article PubModel Counts:

   Print-Electronic 374,396
   Electronic-Print 2,196
   Print 15,720,077
   Electronic 23,405

Owner Counts:

Owner MedlineCitation GeneralNote Keyword
NLM 16,000,717 59 1,750,229
NASA 10,532 1,215 12,924
PIP 37,266 63,815 68,955
KIE 31,494 208,285 73,059
HSR 4,264 38 0
HMD 35,801 0 0
SIS 0 0 0
NOTNLM 0 0 0

JournalIssue CitedMedium Counts:

   Internet 233,371
   Print 15,886,703

ISSN IssnType Counts:

   Electronic 232,450
   Print 15,654,422

CitationSubsets Counts:

   AIM 1,618,717
   B 10,441
   C 7,344
   D 434,716
   E 82,447
   F 8,017
   H 217,388
   IM 13,144,286
   J 69,041
   K 9,799
   N 501,128
   OM 1,760,521
   Q 192,495
   QIS 0
   QO 24,167
   R 3,603
   S 177,450
   T 31,991
   X 172,754

Publication Types Counts:

   Addresses 2,773
   Bibliography 13,039
   Biography 139,153
   Case Reports 1,270,160
   Classical Article 4,102
   Clinical Conference 4,872
   Clinical Trial 428,956
   Clinical Trial, Phase I 7,581
   Clinical Trial, Phase II 11,651
   Clinical Trial, Phase III 3,397
   Clinical Trial, Phase IV 308
   Comment 316,253
   Comparative Study 1,292,509
   Congresses 45,095
   Consensus Development Conference 5,161
   Consensus Development Conference, NIH 546
   Controlled Clinical Trial 73,316
   Corrected and Republished Article 1,148
   Dictionary 502
   Directory 6,393
   Duplicate Publication 628
   Editorial 195,033
   English Abstract 1,365,929
   Evaluation Studies 76,291
   Festschrift 988
   Government Publications 180
   Guideline 13,885
   Historical Article 231,756
   In Vitro 338,997
   Interview 17,545
   Journal Article 15,146,039
Publication Types Counts (continued):
   Lectures 3,910
   Legal Cases 7,739
   Legislation 1,657
   Letter 571,589
   Meta-Analysis 13,768
   Multicenter Study 76,978
   News 106,717
   Newspaper Article 14,851
   Overall 21,000
   Patient Education Handout 1,970
   Periodical Index 306
   Practice Guideline 10,299
   Published Erratum 988
   Randomized Controlled Trial 224,684
   Research Support, N.I.H., Extramural 105,365
   Research Support, N.I.H., Intramural 2,756
   Research Support, Non-U.S. Gov't 3,121,578
   Research Support, U.S. Gov't, Non-P.H.S. 427,972
   Research Support, U.S. Gov't, P.H.S. 1,414,869
   Retracted Publication 756
   Retraction of Publication 681
   Review 1,223,651
   Scientific Integrity Review 103
   Technical Report 1,337
   Twin Study 2,779
   Validation Studies 27,026

Last updated: 04 January 2007
First published: 04 January 2007
Metadata| Permanence level: Permanence Not Guaranteed