2014 MEDLINE/PubMed Baseline Excluding OLDMEDLINE Data: 20,377,715 Citations Found

Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
PMID	20,377,715	20,377,715	1/1.00/1	1/7.46/8
DateCreated	20,377,715	20,377,715	1/1.00/1	8/8.00/8
DateCompleted	20,377,715	20,377,715	1/1.00/1	8/8.00/8
DateRevised	16,805,717	16,805,717	0/1.00/1	8/8.00/8
ISSN	20,264,554	20,264,554	0/1.00/1	9/9.00/9
IssnType=Electronic	0	3,711,085	0	0
IssnType=Print	0	16,553,469	0	0
Volume	20,000,986	20,000,986	0/1.00/1	1/2.24/50
Issue	19,203,693	19,203,693	0/1.00/1	1/1.44/48
PubDate	20,377,715	20,377,715	1/1.00/1	4/7.31/38
Title	20,377,715	20,377,715	1/1.00/1	2/37.59/585
ISOAbbreviation	20,377,650	20,377,650	0/1.00/1	1/16.51/96
ArticleTitle	20,377,715	20,377,715	1/1.00/1	1/87.53/1086
MedlinePgn	20,361,140	20,361,140	0/1.00/1	1/5.71/173
ELocationID	3,633,578	3,794,672	0/1.04/2	0/0.00/0
Valid Yes	0	3,794,672	0	0
Valid No	0	0	0	0
EIdType=doi	0	3,602,881	0	0
EIdType=pii	0	191,791	0	0
Abstract	0	0	0	0
AbstractText	13,200,025	13,200,025	0/1.00/1	2/1218.78/9998
CopyrightInformation	1,045,331	1,045,331	0/1.00/1	1/53.00/554
Identified as Structured Abstract	2,308,599	0	0	0
AbstractText	2,308,599	9,772,864	1/4.23/16	0
NLMCategory: UNLABELLED	0	0	0	0
NLMCategory: BACKGROUND	987,375	1,003,437	0	0
NLMCategory: OBJECTIVE	1,539,723	1,543,028	0	0
NLMCategory: METHODS	2,100,148	2,652,379	0	0
NLMCategory: RESULTS	2,178,088	2,181,670	0	0
NLMCategory: CONCLUSIONS	2,269,375	2,328,496	0	0
NLMCategory: UNASSIGNED	9,209	11,628	0	0
Author	19,943,101	74,448,890	0/3.73/3173	1/12.25/489
Valid Yes	0	74,433,475	0	0
Valid No	0	15,415	0	0
LastName	19,917,607	74,321,507	0/3.73/3172	1/6.74/163
ForeName	19,908,642	74,278,848	0/3.73/3172	1/4.03/111
Initials	19,908,642	74,278,847	0/3.73/3172	1/1.42/8
Suffix	348,060	367,406	0/1.06/7	2/2.21/3
CollectiveName	116,604	127,383	0/1.09/29	1/41.85/489
LastForeSuffix	19,917,607	74,321,507	0/3.73/3172	1/10.78/163
LastInitialsSuffix	19,917,607	74,321,507	0/3.73/3172	1/8.17/163
Affiliation	12,308,324	12,308,346	0/1.00/2	1/102.63/1969
Identifier	34	38	0/1.12/2	16/17.03/19
Language	20,377,715	20,416,540	1/1.00/6	3/3.00/3
Grant	1,990,337	4,533,623	0/2.28/335	14/37.92/107
GrantID	1,904,167	4,405,465	0/2.31/335	1/10.54/66
Acronym	1,808,666	4,216,227	0/2.33/335	2/2.00/2
Agency	1,990,337	4,533,623	0/2.28/335	2/12.86/54
Country	1,990,337	4,533,623	0/2.28/335	5/12.96/14
PublicationType	20,377,715	38,048,550	1/1.87/10	4/18.21/56

 

Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
DataBank	238,366	242,122	0/1.02/4	5/107.55/47047
DataBankName	238,366	242,122	0/1.02/4	3/7.39/18
AccessionNumber	238,366	3,116,413	0/13.07/5880	2/7.78/14
ArticleDate	3,169,504	3,169,504	0/1.00/1	8/8.00/8
VernacularTitle	2,688,076	2,688,076	0/1.00/1	1/79.64/611
Country	20,377,715	20,377,715	1/1.00/1	4/9.93/35
MedlineTA	20,377,715	20,377,715	1/1.00/1	1/15.39/96
NlmUniqueID	20,377,715	20,377,715	1/1.00/1	7/7.27/9
ISSNLinking	20,087,651	20,087,651	0/1.00/1	9/9.00/9
Chemical	10,652,921	41,477,509	0/3.89/58	4/21.20/250
RegistryNumber	10,652,921	41,477,509	0/3.89/58	1/4.71/15
NameOfSubstance	10,652,921	41,477,509	0/3.89/58	2/16.50/249
SupplMeshName	41,123	46,277	0/1.13/10	5/21.57/177
Type=Disease	23,795	24,658	0/1.04/5	5/28.66/177
Type=Protocol	17,362	21,619	0/1.25/10	5/13.47/43
CitationSubset	19,162,095	22,117,600	0/1.15/6	1/1.99/3
GeneSymbol	59,508	126,194	0/2.12/25	1/4.51/41
CommentsCorrections	2,855,631	56,124,447	0/19.65/4916	8/45.48/827
RetractionOf	2,743	3,007	0/1.10/20	25/94.89/344
RetractionIn	2,869	2,897	0/1.01/2	27/59.43/341
SummaryForPatientsIn	1,058	1,072	0/1.01/3	29/45.52/62
OriginalReportIn	1,026	1,072	0/1.04/3	32/47.99/68
CommentOn	541,337	598,476	0/1.11/34	8/45.64/227
CommentIn	483,731	607,818	0/1.26/57	24/48.00/125
ErratumIn	122,251	124,307	0/1.02/10	9/43.43/827
ErratumFor	1,141	1,166	0/1.02/7	8/46.08/104
ReprintIn	2,166	2,197	0/1.01/3	27/50.08/92
ReprintOf	2,112	2,122	0/1.00/4	26/49.30/173
RepublishedFrom	1,414	1,419	0/1.00/2	19/45.47/110
RepublishedIn	1,222	1,227	0/1.00/2	26/47.32/92
UpdateIn	4,473	4,505	0/1.01/2	33/49.74/60
UpdateOf	4,389	4,390	0/1.00/2	31/49.83/100
PartialRetractionOf	36	37	0/1.03/2	32/115.51/211
PartialRetractionIn	36	36	0/1.00/1	36/81.44/199
Cites	1,857,310	54,768,699	0/29.49/4916	22/45.45/198
MeshHeading	19,157,096	207,529,108	0/10.83/68	2/20.33/204
DescriptorName	19,157,096	207,529,108	0/10.83/68	2/14.08/104
Descriptor Major	9,495,194	16,508,018	0/1.74/37	0
Descriptor Not Major	19,059,891	187,514,621	0/9.84/63	0
QualifierName	17,956,638	115,697,078	0/6.44/71	5/11.23/29
Qualifier Major	17,177,994	49,749,456	0/2.90/33	0
Qualifier Not Major	14,586,995	65,947,622	0/4.52/71	0
Descriptor and/or Qualifier Major	19,027,842	63,783,114	0/3.35/37	0
PersonalNameSubject	137,440	158,817	0/1.16/28	3/12.12/75
LastName	137,440	158,817	0/1.16/28	1/7.36/69
ForeName	133,218	153,247	0/1.15/28	1/3.50/48
Initials	133,218	153,247	0/1.15/28	1/1.42/6
Suffix	1,105	1,136	0/1.03/3	2/2.10/3
LastForeSuffix	137,440	158,817	0/1.16/28	3/10.75/73
LastInitialsSuffix	137,440	158,817	0/1.16/28	2/8.74/69

 

Element Name	Citations	Occurrences	Min/Avg/Max Occurrences	Min/Avg/Max Length
NumberOfReferences	1,538,066	1,538,066	0/1.00/1	1/2.10/8
OtherID	2,353,412	2,748,688	0/1.17/6	1/10.09/36
NLM Source	0	2,437,015	0	0
OtherAbstract	0	0	0	0
AbstractText	63,041	63,124	0/1.00/2	38/1259.12/4096
CopyrightInformation	1,855	1,855	0/1.00/1	11/16.80/17
Keyword	319,279	2,403,919	0/7.53/211	1/16.49/171
Keyword Major	80,772	523,611	0/6.48/50	0
Keyword Not Major	318,073	1,880,308	0/5.91/211	0
GeneralNote	148,339	281,751	0/1.90/32	2/34.28/1226
SpaceFlightMission	4,188	19,395	0/4.63/12	6/13.87/28
InvestigatorList	29,882	0	0	0
Investigator: Inclusive (pre-2008 Policy)	8,937	10,292	0/1.15/6	7/31.05/96
LastName	8,937	10,292	0/1.15/6	2/6.69/16
ForeName	8,929	10,281	0/1.15/6	1/2.70/9
Initials	8,929	10,281	0/1.15/6	1/1.85/2
Suffix	16	16	0/1.00/1	2/2.19/3
Affiliation	8,936	10,291	0/1.15/6	3/19.81/83
LastForeSuffix	8,937	10,292	0/1.15/6	3/9.39/19
LastInitialsSuffix	8,937	10,292	0/1.15/6	3/8.54/18
Investigator: 2008 Policy	20,945	1,274,730	0/60.86/3068	2/12.48/164
LastName	20,945	1,274,730	0/60.86/3068	1/7.01/158
ForeName	20,887	1,264,574	0/60.54/3068	1/4.32/46
Initials	20,887	1,264,574	0/60.54/3068	1/1.19/6
Suffix	1,598	2,770	0/1.73/20	2/2.30/3
Affiliation	22	22	0/1.00/1	8/23.64/47
LastForeSuffix	20,945	1,274,730	0/60.86/3068	2/11.29/163
LastInitialsSuffix	20,945	1,274,730	0/60.86/3068	2/8.19/159

 

Element Name	Size or Count
Average Record Size in Bytes	1,520
Words in Title Average	12.04
Words in Title Max	249
Words in Abstract Average	184.23
Words in Abstract Max	1,696
AB Size Zero	7,177,690
AB Size < 1,000	4,762,302
AB Size 1,000 - 1,999	7,611,196
AB Size 2,000 - 2,999	782,872
AB Size 3,000 - 3,999	37,852
AB Size 4,000 - 4,999	4,012
AB Size > 5,000	1,791
Number of MH Occurrences with NO SHs	124,203,015
Number of MH Occurrences with ONE SH	58,459,032
Number of MH Occurrences with SHs	83,326,093
Number of MH Type=Geographic	3,506,469

 

CollectiveName, Author, and Investigator Related			Counts
Citations containing ONLY CollectiveName			25,494
Citations containing BOTH CollectiveName and Author LastName			91,110
Citations containing BOTH CollectiveName and Investigator LastName			20,919
Citations containing BOTH Author LastName and Investigator LastName			28,451
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	0
In-Data-Review	0
PubMed-not-MEDLINE	1,215,620
OLDMEDLINE	0
MEDLINE	19,162,095

 

Article PubModel	Counts
Print-Electronic	2,878,452
Electronic-Print	15,239
Print	17,203,980
Electronic-eCollection	13,188
Electronic	266,856

 

JournalIssue CitedMedium	Counts
Internet	3,771,049
Print	16,606,666

 

Owner	MedlineCitation	GeneralNote	Keyword	OtherAbstract
NLM	20,246,268	3,620	0	0
NASA	10,725	4,570	12,939	409
PIP	37,393	63,794	68,853	53,146
KIE	31,939	209,616	73,817	3,026
HSR	7,713	151	0	0
HMD	43,677	0	0	0
SIS	0	0	0	0
NOTNLM	0	0	164,099	0
AIDS	0	0	0	5,342
Publisher	0	0	0	1,201

 

Grant Country	Occurrences
United States	4,329,127
United Kingdom	158,222
Italy	8,811
Canada	34,085
Austria	2,656
International	700
Ireland	22

 

CitationSubsets	Counts
AIM	1,961,162
B	10,445
C	7,404
D	507,887
E	90,568
F	8,016
H	257,892
IM	17,909,335
J	68,941
K	22,786
N	608,428
OM	0
Q	201,856
QIS	5,972
QO	24,429
R	3,602
S	187,207
T	52,882
X	188,788

 

Publication Types	Counts
Addresses	4,190
Bibliography	14,607
Biography	135,287
Case Reports	1,616,042
Classical Article	5,682
Clinical Conference	6,415
Clinical Trial	478,656
Clinical Trial, Phase I	13,228
Clinical Trial, Phase II	21,282
Clinical Trial, Phase III	8,080
Clinical Trial, Phase IV	847
Comment	541,338
Comparative Study	1,634,426
Congresses	59,369
Consensus Development Conference	8,558
Consensus Development Conference, NIH	708
Controlled Clinical Trial	86,436
Corrected and Republished Article	1,414
Dictionary	535
Directory	6,611
Duplicate Publication	1,098
Editorial	328,006
English Abstract	1,681,148
Evaluation Studies	184,096
Festschrift	1,418
Government Publications	187
Guideline	15,256
Historical Article	286,458
In Vitro	369,692
Interview	23,770
Journal Article	18,956,252
Lectures	5,765
Legal Cases	10,093
Legislation	1,666
Letter	793,265
Meta-Analysis	41,859
Multicenter Study	159,092
News	154,849
Newspaper Article	17,855
Overall	26,969
Patient Education Handout	3,843
Periodical Index	322
Personal Narrative	453
Portraits	38,206
Practice Guideline	18,081
Published Erratum	1,159
Randomized Controlled Trial	354,135
Research Support, American Recovery and Reinvestment Act	1,068
Research Support, N.I.H., Extramural	664,548
Research Support, N.I.H., Intramural	32,193
Research Support, Non-U.S. Gov't	5,247,880
Research Support, U.S. Gov't, Non-P.H.S.	641,367
Research Support, U.S. Gov't, P.H.S.	1,442,024
Retracted Publication	2,901
Retraction of Publication	2,817
Review	1,790,263
Scientific Integrity Review	181
Technical Report	2,207
Twin Study	5,869
Validation Studies	63,264
Video-Audio Media	4,262
Webcasts	287

 

ELocationId EIdType	Counts
DOI or PII, MedlinePgn Not Found	3,479
DOI or PII, MedlinePgn Found	3,469,005
DOI and PII, MedlinePgn Not Found	13,096
DOI and PII, MedlinePgn Found	147,998

 

PMID Versioning	Counts
Version 1	20,377,618
Version 2	67
Version 3	12
Version 4	6
Version 5	3
Version 6	3
Version 7	2
Version 8	2
Version 9	1
Version 10	1