United States National Library of Medicine National Institutes of Health

2008 MEDLINE/PubMed Baseline Excluding OLDMEDLINE Data: 15,119,532 Citations Found

Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
PMID	15,119,532	15,119,532	1/1.00/1	1/7.28/8
DateCreated	15,119,532	15,119,532	1/1.00/1	8/8.00/8
DateCompleted	15,119,532	15,119,532	1/1.00/1	8/8.00/8
DateRevised	13,923,466	13,923,466	0/1.00/1	8/8.00/8
ISSN	15,031,897	15,031,897	0/1.00/1	9/9.00/9
IssnType=Electronic		332,366
IssnType=Print		14,699,531
Volume	14,787,738	14,787,738	0/1.00/1	1/2.25/50
Issue	14,333,946	14,333,946	0/1.00/1	1/1.42/30
PubDate	15,119,532	15,119,532	1/1.00/1	4/7.34/55
Title	15,119,532	15,119,532	1/1.00/1	2/37.38/595
ISOAbbreviation	8,304,819	8,304,819	0/1.00/1	3/16.57/61
ArticleTitle	15,119,532	15,119,532	1/1.00/1	2/85.21/1086
MedlinePgn	15,119,532	15,119,532	1/1.00/1	1/5.67/69
ELocationID	0	0	0/0.00/0	0/0.00/0
Valid Yes		0
Valid No		0
EidType=doi		0
EidType=pii		0
EidType=other		0
Abstract
AbstractText	8,949,863	8,949,863	0/1.00/1	50/1177.55/9992
CopyrightInformation	222,930	222,930	0/1.00/1	1/35.75/1000
Affiliation	7,899,086	7,899,086	0/1.00/1	1/96.07/274
Author	14,806,561	50,152,857	0/3.39/744	1/11.45/500
Author Valid Yes		50,146,938
Author Valid No		5,919
LastName	14,788,684	50,090,632	0/3.39/743	1/6.90/163
ForeName	14,782,123	50,057,465	0/3.39/743	1/3.07/56
Initials	14,782,122	50,057,463	0/3.39/743	1/1.43/8
Suffix	290,003	306,678	0/1.06/6	2/2.20/3
CollectiveName	57,436	62,225	0/1.08/25	1/42.48/500
LastForeSuffix	14,788,684	50,090,632	0/3.39/743	1/9.98/163
LastInitialsSuffix	14,788,684	50,090,632	0/3.39/743	1/8.35/163
Language	15,119,532	15,141,180	1/1.00/4	3/3.00/3
Grant	1,319,483	2,338,786	0/1.77/69	18/29.40/81
GrantID	1,312,210	2,330,572	0/1.78/69	1/9.06/44
Acronym	1,277,829	2,263,718	0/1.77/68	2/2.00/2
Agency	1,319,483	2,338,786	0/1.77/69	16/18.43/69
DataBank	166,585	169,336	0/1.02/4	6/69.22/47047
DataBankName	166,585	169,336	0/1.02/4	3/6.68/18
AccessionNumber	166,585	1,421,690	0/8.53/5880	2/7.45/14
PublicationType	15,119,532	28,062,779	1/1.86/10	4/17.91/40
ArticleDate	661,794	661,794	0/1.00/1	8/8.00/8
VernacularTitle	2,498,102	2,498,102	0/1.00/1	1/81.09/614
Country	15,119,532	15,119,532	1/1.00/1	4/9.91/35
MedlineTA	15,119,532	15,119,532	1/1.00/1	1/15.35/96
NlmUniqueID	15,119,532	15,119,532	1/1.00/1	7/7.17/9
ISSNLinking	0	0	0/0.00/0	0/0.00/0
Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
Chemical	8,184,954	31,374,785	0/3.83/57	4/20.63/250
RegistryNumber	8,184,954	31,374,785	0/3.83/57	1/4.50/14
NameOfSubstance	8,184,954	31,374,785	0/3.83/57	2/16.14/249
CitationSubset	14,862,118	17,427,071	0/1.17/6	1/1.98/3
GeneSymbol	59,509	126,195	0/2.12/25	1/4.51/41
CommentsCorrections	712,836	861,522	0/1.21/56	8/45.88/835
RetractionOf	794	899	0/1.13/8	32/94.28/344
RetractionIn	871	883	0/1.01/2	27/70.62/341
SummaryForPatientsIn	593	608	0/1.03/3	29/45.26/55
OriginalReportIn	584	608	0/1.04/3	32/47.90/68
CommentOn	346,573	384,570	0/1.11/27	19/45.35/139
CommentIn	309,051	388,421	0/1.26/56	25/47.40/110
ErratumIn	75,596	76,700	0/1.01/3	9/39.70/835
ErratumFor	1,001	1,009	0/1.01/3	8/45.69/104
ReprintIn	535	538	0/1.01/2	30/50.27/92
ReprintOf	486	487	0/1.00/2	30/47.95/77
RepublishedFrom	1,209	1,213	0/1.00/2	19/45.06/110
RepublishedIn	1,002	1,007	0/1.00/2	26/46.91/89
UpdateIn	2,303	2,317	0/1.01/2	37/48.65/58
UpdateOf	2,230	2,230	0/1.00/1	36/48.40/56
PartialRetractionOf	15	16	0/1.07/2	66/112.38/198
PartialRetractionIn	16	16	0/1.00/1	46/89.62/172
MeshHeading	14,858,955	156,209,219	0/10.51/68	2/19.87/193
DescriptorName	14,858,955	156,209,219	0/10.51/68	2/13.81/104
Descriptor Major	7,302,340	12,656,496	0/1.73/37
Descriptor Not Major	14,814,895	143,552,723	0/9.69/61
QualifierName	13,801,294	84,140,238	0/6.10/64	5/11.25/29
Qualifier Major	13,130,493	36,082,569	0/2.75/28
Qualifier Not Major	11,170,388	48,057,669	0/4.30/63
Descriptor and/or Qualifier Major	14,729,952	47,312,239	0/3.21/37
NumberOfReferences	1,303,210	1,303,210	0/1.00/1	1/2.09/7
PersonalNameSubject	118,566	135,793	0/1.15/28	3/11.60/70
LastName	118,566	135,793	0/1.15/28	2/7.46/69
ForeName	114,778	130,858	0/1.14/28	1/2.85/41
Initials	114,775	130,854	0/1.14/28	1/1.43/6
Suffix	946	972	0/1.03/3	2/2.10/3
LastForeSuffix	118,566	135,793	0/1.15/28	3/10.22/69
LastInitialsSuffix	118,566	135,793	0/1.15/28	3/8.85/69
OtherID	218,869	311,611	0/1.42/5	1/6.92/16
OtherAbstract
AbstractText	61,948	61,988	0/1.00/2	60/1284.22/4096
CopyrightInformation	1,856	1,856	0/1.00/1	11/16.80/17
Keyword	155,283	1,588,121	0/10.23/98	2/17.03/123
Keyword Major	80,874	524,052	0/6.48/50
Keyword Not Major	154,077	1,064,069	0/6.91/88
GeneralNote	144,737	278,095	0/1.92/32	2/34.31/704
SpaceFlightMission	4,144	19,202	0/4.63/12	6/13.88/28
Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
Investigator	8,959	10,314	0/1.15/6	7/31.04/96
LastName	8,959	10,314	0/1.15/6	2/6.70/16
ForeName	8,951	10,303	0/1.15/6	1/2.70/9
Initials	8,951	10,303	0/1.15/6	1/1.84/2
Suffix	16	16	0/1.00/1	2/2.19/3
Affiliation	8,958	10,313	0/1.15/6	3/19.81/83
LastForeSuffix	8,959	10,314	0/1.15/6	3/9.40/19
LastInitialsSuffix	8,959	10,314	0/1.15/6	3/8.54/18


Average Record Size in Bytes	1,322

Words in Title	Average	11.75	Max	249
Words in Abstract	Average	179.31	Max	1,666

AB Size Zero	6,169,669
AB Size < 1,000	3,561,740
AB Size 1,000 - 1,999	4,859,102
AB Size 2,000 - 2,999	502,258
AB Size 3,000 - 3,999	23,561
AB Size 4,000 - 4,999	2,411
AB Size > 5,000	791

Number of MH Occurrences with NO SHs	94,146,718
Number of MH Occurrences with ONE SH	44,870,094
Number of MH Occurrences with SHs	62,062,501

CollectiveName Counts
Number of Citations containing ONLY CollectiveName			17,877
Number of Citations containing BOTH CollectiveName AND LastName			39,559

MedlineCitation Status Counts:
Completed	0
In-Process	0
In-Data-Review	0
PubMed-not-MEDLINE	257,414
OLDMEDLINE	0
MEDLINE	14,862,118

Article PubModel Counts:
Print-Electronic	621,942
Electronic-Print	2,569
Print	14,457,738
Electronic	37,283

JournalIssue CitedMedium Counts:
Internet	336,483
Print	14,783,049

Owner Counts:
Owner	MedlineCitation	GeneralNote	Keyword
NLM	14,998,160	62	0
NASA	10,539	4,544	12,930
PIP	37,265	63,815	68,952
KIE	32,013	209,632	73,827
HSR	4,938	42	0
HMD	36,617	0	0
SIS	0	0	0
NOTNLM	0	0	0

CitationSubsets Counts:
AIM	1,668,175
B	10,441
C	7,344
D	433,379
E	84,077
F	8,017
H	219,893
IM	13,790,180
J	69,040
K	16,147
N	507,734
OM	0
Q	193,670
QIS	980
QO	24,166
R	3,603
S	179,177
T	35,444
X	175,604

Publication Types Counts:
Addresses	2,959
Bibliography	13,029
Biography	116,199
Case Reports	1,298,115
Classical Article	4,390
Clinical Conference	5,185
Clinical Trial	437,486
Clinical Trial, Phase I	8,331
Clinical Trial, Phase II	12,938
Clinical Trial, Phase III	3,884
Clinical Trial, Phase IV	358
Comment	346,573
Comparative Study	1,343,932
Congresses	47,531
Consensus Development Conference	5,619
Consensus Development Conference, NIH	575
Controlled Clinical Trial	75,543
Corrected and Republished Article	1,209
Dictionary	508
Directory	6,438
Duplicate Publication	718
Editorial	210,352
English Abstract	1,407,508
Evaluation Studies	93,595
Festschrift	1,050
Government Publications	182
Guideline	14,163
Historical Article	235,167
In Vitro	345,046
Interview	18,474
Journal Article	14,084,882
Lectures	4,239
Legal Cases	8,263
Legislation	1,659
Letter	604,252
Meta-Analysis	16,411
Multicenter Study	87,966
News	113,724
Newspaper Article	15,788
Overall	21,976
Patient Education Handout	2,268
Periodical Index	310
Practice Guideline	11,395
Published Erratum	1,009
Randomized Controlled Trial	241,734
Research Support, N.I.H., Extramural	184,318
Research Support, N.I.H., Intramural	6,568
Research Support, Non-U.S. Gov't	3,381,712
Research Support, U.S. Gov't, Non-P.H.S.	458,007
Research Support, U.S. Gov't, P.H.S.	1,418,649
Retracted Publication	887
Retraction of Publication	809
Review	1,302,377
Scientific Integrity Review	117
Technical Report	1,506
Twin Study	3,179
Validation Studies	31,717

Last updated: 17 December 2007
First published: 17 December 2007
Metadata| Permanence level: Permanent: Dynamic Content