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