Articles from JAMA 287(21): June 5, 2002
Eugene Garfield
garfield at CODEX.CIS.UPENN.EDU
Wed Jun 26 16:45:53 EDT 2002
The June 5, 2002 issue of JAMA is a special issue that will be of interest
to many bibliometricians and others interested in journalology. I have
identified several that are of possible interest. The contents of the issue
can be viewed free of charge at JAMA's site at :
http://jama.ama-assn.org/issues/v287n21/toc.html
Title Problems with indexing and citation of articles with group
authorship
Full text available at :
http://jama.ama-assn.org/issues/v287n21/ffull/joc12118.html
Author Dickersin K, Scherer R, Suci EST, Gil-Montero M
Journal JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION 287 (21): 2772-2774
JUN 5 2002
Document type: Article Language: English Cited References: 7
Times Cited: 0
Abstract:
Context It is not known whether articles with group authorship (ie, with a
research group name listed as the author) are difficult to identify or
whether use of group authorship may lead to problems with citation.
Methods To examine ways in which reports of controlled trials with group
authorship are indexed and citations counted in bibliographic databases, we
conducted a cross-sectional study in January 2000. We identified 47
controlled trials funded by the National Eye Institute and 285 associated
articles. Between January and August 2000, we searched PubMed and Science
Citation Index (SCI) and recorded the citation practices for these articles.
Our main outcome measures were ways
in which trial reports were listed in PubMed and SCI and number of citations
to each report by type of authorship.
Results Of the 285 published reports identified, 126 (44%) had group
authorship, 109 (38%) had modified group authorship (listing individual
names plus the name of the research group), and 50 (18%) had named authors
only. In PubMed, no group authors were listed in the author field (per
MEDLINE rules); in SCI, group-authored reports generally were incorrectly
attributed (first name on investigator list [35.3%], first name on writing
committee [25.5%], contact name [16.7%], anonymous [16.7%], and other
[5.9%]). Using the SCI general search, we identified citations to 16.7% of
group-authored reports, compared with citations to 96.9% of reports with
modified group authorship and 93.9% of citations to reports with named
authors only. Other systematic search methods found that more than 98% of
group-authored reports actually had been cited and that group-authored
reports were cited more than other reports.
Conclusions Indexing systems are not optimally adapted to group authorship.
We recommend that indexing services change their practices to include group
authors in the author field to help correct the problem.
Addresses:
Dickersin K, Brown Univ, Dept Community Hlth, 169 Angell St,Box G-S2,
Providence, RI 02912 USA
Brown Univ, Dept Community Hlth, Providence, RI 02912 USA
Brown Univ, Dept Sociol, Providence, RI 02912 USA
Univ Maryland, Dept Epidemiol & Prevent Med, Baltimore, MD 21201 USA
Publisher:
AMER MEDICAL ASSOC, CHICAGO
IDS Number:
559AP
ISSN:
0098-7484
Cited Author Cited Work Volume Page
Year
NATURE 415 101 2002
*ISCH OPT NEUR DEC ARCH OPHTHALMOL-CHIC 114 1366 1996
*ISCH OPT NEUR DEC CONTROL CLIN TRIALS 9 276 1998
*ISCH OPT NEUR DEC JAMA-J AM MED ASSOC 273 625 1995
MEINERT CL CONTROL CLIN TRIALS 14 255 1993
NEWALL ML BRIT MED J 311 632 1995
TAIT JA AUTHORS TITLES ANAL 1969
Title Journal prestige, publication bias, and other characteristics
associated with citation of published studies in peer-reviewed journals
Full Text Available at:
http://jama.ama-assn.org/issues/v287n21/ffull/joc11817.html
Author Callaham M, Wears RL, Weber E
Journal JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION
287 (21): 2847-2850 JUN 5 2002
Document type: Article Language: English Cited References: 19
Times Cited: 0
Abstract:
Context Citation by other authors is important in the dissemination of
published science, but factors predicting it are little studied.
Methods To identify characteristics of published research predicting
citation in other journals, we searched the Science Citations Index database
for a standardized 3.5 years for all citations of published articles
originally submitted to a 1991 emergency medicine specialty meeting.
Analysis was conducted by classification and regression trees, a
nonparametric modeling technique of regression trees, to determine the
impact of previously determined characteristics of the full articles on the
outcome measures, We calculated the the number of times an article was cited
each year and calculated the mean impact factor (citations per manuscript
per year) in other citing journals.
Results Of the 493 submitted manuscripts, 204 published articles met entry
criteria. The mean citations per year was 2.04 (95% confidence interval,
1.6-2.4; range, 0-20.9) in 440 different journals. Nineteen articles
(9.3%)were never cited. The ability to predict the citations per year was
weak (pseudo R-2 = 0.14.). The strongest predictor of citations per year was
the impact factor of the original publishing journal. The presence of a
control group, the subjective newsworthiness
score, and sample size predicted citation frequency (24.3%, 26.0%, and 26.5%
as strongly, respectively). The ability to predict mean impact factor of the
citing journals was even weaker (pseudo R-2 = 0.09). The impact factor of
the publishing journal was the strongest predictor, followed by the
newsworthiness score (89.9% as strongly) and a subjective quality score
(61.5%). Positive outcome bias was not evident for either outcome measure.
Conclusion In this cohort of published research, commonly used measures of
study methodology and design did not predict the frequency of citations or
the importance of citing journals. Positive outcome bias was not evident,
The impact factor of the original publishing journal was more important than
any other variable, suggesting that the journal in which a study is
published may be as important as traditional measures of study quality in
ensuring dissemination.
KeyWords Plus:
METAANALYSIS, ABSTRACTS, QUALITY, HAZARDS, TRIALS
Addresses:
Callaham M, Univ Calif San Francisco, Div Emergency Med, Box 0208, San
Francisco, CA 94143 USA
Univ Calif San Francisco, Div Emergency Med, San Francisco, CA 94143 USA
Univ Florida, Dept Emergency Med, Jacksonville, FL USA
Publisher:
AMER MEDICAL ASSOC, CHICAGO
IDS Number:
559AP
ISSN:
0098-7484
Cited Author Cited Work Volume Page
Year
BERLIN JA JAMA-J AM MED ASSOC 282 1083 1999
BREIMAN L CLASSIFICATION REGRE 1984
BROWN P NEW SCI 15 12 1993
CALLAHAM ML JAMA-J AM MED ASSOC 280 254 1998
DAVIES D CAN MED ASSOC J 155 877 1996
DICKERSIN K JAMA-J AM MED ASSOC 267 374 1992
DICKERSIN K ONLINE J CURR CLIN T 1993
EASTERBROOK PJ LANCET 337 867 1991
GARFIELD E BRIT MED J 313 411 1996
GARFIELD E COLL RES LIBR 48 19 1997
GARFIELD E LIBRI 48 67 1998
GARFIELD E SCI J CITATION REPOR 1996
GOLDMAN L NEW ENGL J MED 303 255 1980
JUNI P JAMA-J AM MED ASSOC 282 1054 1999
KOREN G LANCET 2 1440 1989
MCCORMICK MC AM J DIS CHILD 139 122 1985
MERANZE J ANESTH ANALG 61 445 1982
SCHERER RW JAMA-J AM MED ASSOC 272 158 1994
WEBER EJ JAMA-J AM MED ASSOC 280 257 1998
Title Association of journal quality indicators with
methodological quality of clinical research articles
Full Text Available at :
http://jama.ama-assn.org/issues/v287n21/ffull/joc11853.html
Author Lee KP, Schotland M, Bacchetti P, Bero LA
Journal JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION
287 (21): 2805-2808 JUN 5
2002
Document type: Article Language: English Cited References: 42
Times Cited: 0
Abstract:
Context The ability to identify scientific journals that publish
high-quality research would help clinicians, scientists, and health-policy
analysts to select the most up-to-date medical literature to review.
Methods To assess whether journal characteristics of (1) peer-review status,
(2) citation rate, (3) impact factor, (4) circulation, (5) manuscript
acceptance rate, (6)MEDLINE indexing, and (7) Brandon/Hill Library List
indexing are predictors of methodological quality of research articles, we
conducted a cross-sectional studyof 243 original research articles involving
human subjects published in general internal medical journals.
Results The mean (SD) quality score of the 243 articles was 1.37 (0.22). All
journals reported a peer-review process and were indexed on MEDLINE. In
models that controlled for article type (randomized controlled trial [RCT]
or non-RCT), journal citation rate was the most statistically significant
predictor (0.051 increase per doubling; 95% confidence interval [CI],
0.037-0.065; P<.001). In separate analyses by article type, acceptance rate
was the strongest predictor for RCT quality (-0.113 per doubling; 95% Cl,
-0.148 to -0.078; P<.001), while journal citation rate was the most
predictive factor for non-RCT quality (0.051 per doubling; 95% Cl,
0.044-0.059; P<.001).
Conclusions High citation rates, impact factors, and circulation rates, and
low manuscript acceptance rates and indexing on Brandon/Hill Library List
appear to be predictive of higher methodological quality scores for journal
articles.
KeyWords Plus:
RANDOMIZED CONTROLLED TRIALS, IMPACT FACTOR, CITATION ANALYSIS, BIAS,
HEALTH, DRUG, PUBLICATIONS, MEDICINE,
SCIENCE, SCALES
Addresses:
Bero LA, Univ Calif San Francisco, Sch Med, Inst Hlth Policy Studies, Suite
420,Box 0613,3333 Calif St, San Francisco, CA 94143 USA
Univ Calif San Francisco, Sch Med, Inst Hlth Policy Studies, San Francisco,
CA 94143 USA
Univ Calif San Francisco, Sch Pharm, Dept Clin Pharm, San Francisco, CA
94143 USA
Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143
USA
NYU, Dept Psychol, New York, NY 10003 USA
Publisher:
AMER MEDICAL ASSOC, CHICAGO
IDS Number:
559AP
ISSN:
0098-7484 Association of Journal Quality Indicators With Methodological
Quality of Clinical Research
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BARNES DE JAMA-J AM MED ASSOC 279 1566 1998
BARNES DE TOB CONTROL 6 19 1997
BERLIN J ONLINE J CURR CLIN T 2001
BERLIN JA JAMA-J AM MED ASSOC 282 1083 1999
BERO LA INT J TECHNOL ASSESS 12 209 1996
BIRKEN CS PEDIATRICS 103 941* 1999
BLOOM BS INT J TECHNOL ASSESS 16 13 2000
BRUER JT AM J PUBLIC HEALTH 72 1119 1982
CAMPBELL FM B MED LIBR ASSOC 78 376 1990
CHO MK JAMA-J AM MED ASSOC 272 101 1994
CLARK HD CONTROL CLIN TRIALS 20 448 1999
DAVIDOFF F JAMA-J AM MED ASSOC 286 1232 2001
DAVIDSON RA J GEN INTERN MED 1 155 1986
DEJONG JW EUR HEART J 17 35 1996
DJULBEGOVIC B LANCET 356 635 2000
EVANS JT JAMA-J AM MED ASSOC 263 1353 1990
GALLAGHER EJ ANN EMERG MED 31 83 1998
GEHANNO JF OCCUP ENVIRON MED 57 706 2000
GOTZSCHE PC BRIT MED J 295 654 1987
HAGGARD E INTRACLASS CORRELATI 1958
HILL DR B MED LIBR ASSOC 87 145 1999
JOYCE J JAMA-J AM MED ASSOC 280 264 1998
JUNI P JAMA-J AM MED ASSOC 282 1054 1999
LARSSON KS J INTERN MED 238 445 1995
LIJMER JG JAMA-J AM MED ASSOC 282 1061 1999
MACLEHOSE R HLTH TECHNOL ASSESS 4 1 2000
MACROBERTS MH J AM SOC INFORM SCI 40 342 1989
MOED HF SCIENTOMETRICS 37 105 1996
MOHER D CONTROL CLIN TRIALS 16 62 1995
MORAVCSIK MJ SOC STUD SCI 5 86 1975
OPTHOF T CARDIOVASC RES 33 1 1997
PITTLER MH J CLIN EPIDEMIOL 53 485 2000
RENNIE D LANCET S 2 18 1998
SCHOONBAERT D TROP MED INT HEALTH 1 739 1996
SEGLEN PO ALLERGY 52 1050 1997
SEGLEN PO BRIT MED J 314 498 1997
SEGLEN PO J AM SOC INFORM SCI 45 1 1994
SEGLEN PO J AM SOC INFORM SCI 43 628 1992
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