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Bibliometric analysis of the Journal of Medicine and Movies (2005-2008)

María Cristina Tarrés1,2

1Cátedra de Biología. Facultad de Ciencias Médicas. 2Consejo de Investigaciones de la Universidad Nacional de Rosario (Argentina).

Correspondence: María Cristina Tarrés. Chacabuco 1328, Piso 6. 2000 Rosario, Santa Fe (Argentina).

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Received 2 May 2009; accepted 1 July 2009


Summary

The purpose of the paper was to characterise the Journal of Medicine and Movies by carrying out an exploratory study of the articles published during 2005-2008. The data were obtained from the journal by extracting information about articles, authorships, bibliographic references, key words and covers. Quantitative bibliometric production and consumption indicators were calculated.

Original papers were recorded in a percentage of 54%; concerning authorships, a cooperation index of 1.82 authors/article was stated and 52% were signed by a single author. The authors’ geographical place of origin showed a predominance of Salamanca, followed by a growing participation of authors from other places in Spain.

The average number of quotes per article was about 8, comparable to the results of the bibliometric map of Spain, Price Index being close to 39%.

The most indexed documents were books and articles from scientific journals and 47% of the total of the references came from documents in Spanish.

The Journal of Medicine and Movies has evolved satisfactorily, keeping within the general indicators of other stronger scientific journals and can be considered a landmark for the use of film as a means of access to medical knowledge.

Keywords: Journal of Medicine and Movies, Bibliometry, Periodical publications, Cooperation, References.


Introduction

The bibliographic databases have a structure and organisation in normalised fields (authors, title, editorial, name of the magazine, publication year, workplace, describers, bibliography) that are not only one of the main information sources on publications, but also offer a great variety of retrieval elements for the elaboration of bibliometric studies1.

Bibliometry studies a discipline’s nature and progress by means of the analysis of the different aspects of written communication2. In this sense, it is noted that such studies are in themselves a discipline with a multidisciplinary scope that, through the analysis of variables present in publications, enables a closer approach to the situation of a scientific field3.

Bibliometric studies can stem from both the analysis of the total bibliographic production of a scientific branch, and from more specific analysis units such as books, magazines, doctoral dissertations, articles in magazines, scientific terms, authors, disciplines or university departments. Within them we can identify two different fields: Descriptive Bibliometry, which comprises papers concerning quantitative aspects, and Assessment Bibliometry, which adds the assessment of the scientific activity to the description, going into the analysis of the content, which is an important contribution for the creation of the so called “invisible schools”, circles or networks that help in the development of an area of knowledge4.

In recent years, an important number of bibliometric studies in the field of biomedicine have been published in Europe and America as testified, among others, by the contributions made by Cruz5 and Ramos et al6. In Spain such studies were introduced three decades ago7 and, from then on, several health magazines have spread them8-14.

The Journal of Medicine and Movies is a Spanish bilingual publication whose main purpose is to form, inform, arouse the critic spirit and observation ability and enable the expression of capacities and interests in a sector of the health care professions that is interested in assessing the approach of films to medical aspects15.

On completing the second volume, its editors assessed it, dealing with quantitative aspects as well as reflecting on its progress15 and, in that sense, the purpose of this paper is to characterise the journal by performing a descriptive bibliometric study of the sectors which the content of each number comprises, starting from articles published during all the years it has existed.

Material and Methods

The Journal of Medicine and Movies is a bilingual publication (Spanish – English), with free distribution and electronic subscription. It started in 2005, edited by Ediciones Universidad de Salamanca (ISSN 1885-5210) and in it film material is presented and analysed for its subsequent use as an education tool to teach different aspects linked to health processes – illness.

The publication appears regularly, it is released every three months and 16 numbers have already been edited (4 a year). Its content is structured in the following sub-sections: Editorial comment, Editorial, Originals, Editors’ forum and Medicine in stills. Some numbers also include Medicine in film scenes and Correspondence and, since 2007, On the cover.

In order to carry out a descriptive-retrospective bibliometric study of all the available collection, the material to be analysed consisted of the articles published between 2005 and 2008, corresponding to volumes 1 to 4, defining as an article that which provides contents that have not been previously published and that have been subjected to peer review

The data were obtained from the journal’s web page (link), extracting the following information:

  • On the articles: Number per volume, number and sub-section.
  • On the authorship: Number of authors in each sub-section, number of signatures per volume and place of origin.
  • On the bibliographic references: Number of quotes per article, number of references per volume and number, amount depending on language, publication year and documentary type, which in this paper is coded in journals, books, dissertations, conferences and presentations of papers at scientific congresses, press articles, official data and bases or web pages.
  • On key words: Number per article and per volume and number.
  • On the covers: Record of their description.

Quantitative bibliometric production indicators were calculated as well as the cooperation index or number of signatures/paper and that of the references per article/year and of consumption as well as the Price Index consisting in the percentage of references that do not date back more than 5 years16,17.

Basic descriptive statistics were obtained (average and standard deviation) for the quantitative variables, and frequency distributions were obtained for qualitative variables with the purpose of carrying out an exploratory analysis to describe the behaviour of the available information.

Results

On the articles

During the 2005-2008 period the Journal of Medicine and Movies has published 99 papers. Table 1 shows the distribution per volume and total number of articles that made up the analysis units for this paper, the average ± standard deviation being 5.25±0.50, 5.75±0.50, 6.75±0.50 and 7.00±0.82 articles for each volume with a total number of 6.31±0.87 articles per volume.

Table 1. Distribution of the number of articles published per volume and number in the Journal of Medicine and Movies

Volume Number of articles/Nº Total per volume

1

2005

1 5 21
26
35
45

2

2006

15 23
26
36
46

3

2007

17 27
27
36
47

4

2008

17 28
28
37
46
Total 9999

The distribution of the articles in sub-sections is part of the general structure of the journal, reckoning a total of 19 Editorial comments and/or Editorials (19%), 53 Originals (54%), 13 Editors’ forums (13%), 12 articles concerning Medicine in stills and Medicine in film scenes (12%) and 2 Correspondences (2%) in the 16 numbers.

On the authorships

Concerning the authors’ participation in the elaboration of the documents, tables 2 and 3 show the distribution of the papers according to the number of signatures, classified by year of publication and by sub-section.

Table 2. Distribution of the number of authors per article in each volume of the Journal of Medicine and Movies

Number of authors / paper Volumen 1 Volume 2 Volume 3 Volume 4 Total
1 9 12 16 14 51
2 7 4 4 5 20
3 4 6 7 8 25
4 1 1 - - 2
8 - - - 1 1
Total 21 23 27 28 99

The average cooperation index was 1.82 authors per article (standard deviation 1.08) and in table 2 it can be seen that most of the papers are signed by one (52%), followed by three (25%) and two (20%), the participation of more authors being very low (four 2% and eight 1%).

Table 3. Distribution of the number of authors per article in each sub-section of the Journal of Medicine and Movies

Medicine in stills and in film scenes Correspondence Total
Number of authors / paper Editorial Comment and Editorial Originals Editors’ forum
1 5 37 6 1 2 51
2 12 5 3 1 - 21
3 2 9 3 10 - 24
4 - 1 1 - - 2
8 - 1 - - - 1
Total 19 53 13 12 2 99

In the table above it can be appreciated that single authorship predominates among the Originals (37/53x100=70%) while the participation of two authors predominates among the Editorial comments and/or Editorials (12/19 x100=63%), corresponding precisely to those signed by the Journal’s Editors.

The distribution of the authors according to their geographical origin per volume appears in table 4. In it a clear predominance of signatories from Salamanca can be appreciated (56% of the papers) followed, as the years go by, by an increasing participation of authors from other places in Spain and other countries.

Table 4,5,6,7,8. Distribution of the geographical origin of the authors of the articles published in the Journal of Medicine and Movies according to volume

Spain

City 2005 2006 2007 2008 Total per cities
Salamanca 17 13 15 10 55
San Sebastián - - 2 4 6
Barcelona - 1 2 1 4
Madrid - 1 1 1 3
Leioa - - 1 2 3
León 1 - - - 1
Sevilla - 1 - - 1
Valencia - - 1 - 1
Barañain - - 1 - 1
Granada - - 1 - 1
Toledo - - 1 - 1
Santiago de Compostela - - - 1 1
Ourense - - - 1 1
Zamora - - - 1 1
Girona - - - 1 1
Valladolid - - - 1 1
Málaga - - - 1 1

Total in Spain is 83

Portugal

City 2005 2006 2007 2008 Total per city
Lisboa 1 1 - - 2

Total in Portugal is 2

Argentina

City 2005 2006 2007 2008 Total per city
Buenos Aires 1 3 2 1 7
Rosario 1 2 - 2 5
Corrientes - - - 1 1

Total in Argentina is 13

Bolivia

City 2005 2006 2007 2008 Total per city
La Paz - 1 - - 1

Total

City 2005 2006 2007 2008 Total per city
21 23 27 28 99

On the bibliographic references

In 86 papers belonging to the sub-sections Editorial comment and Editorial (17), Originals (53), Editors’ forum (13), Medicine in film scenes and Correspondence (3) a total of 667 bibliographic quotes were included. Table 5 shows the distribution per volume, the index of references per article and the Price index. From it we can draw the conclusion that the highest number of quotes took place in 2007 and 2008, with 217 and 215 references, from 22 and 23 papers respectively. The average of quotes per article is 7.76 in the 4 years of publication, this number ranging between a maximum of 9.86 in 2007 and a minimum of 5.29 in 2005.

Concerning the obsolescence of the quotes, 258 not dating back more than 5 years were counted, which settles a Price index of 38.68%. The distribution of this index in years was similar to that of the whole (Table 5), being slightly higher in 2007 (45.16%).

Table 9. Distribution of the number of references per article and Price Index according to volume of the Journal of Medicine and Movies

Volume Number of articles with references Number of references Index of references / articles References < 5 years Price Index
1 2005 21 111

111/21=

5,29

42

42/111x100=

37,84%

2 2006 20 124

124/20=

6,20

47

47/124x100=

37,90%

3 2007 22 217 217/22=
98

98/217x100=

45,16%

4 2008 23 215

215/23=

9,35

71

71/215x100=

33,02%

Total 86 667

667/86=

7,76

258

258/667x100=

38,68%

The distribution of the references by type of document (Table 6) shows that 43.03% and 42.73% come, respectively, from books and scientific journals. The following most quoted type are databases and web pages on the internet (9.89%). Statistics, reports, files and official legal rules (1.65%), Dissertations and Conferences and Presentations of Papers at Congresses (1.35%) and articles in newspapers (1.35%) were indexed to a far lesser extent.

As far as language is concerned, (Table 6), 47.08% of the references come from documents in Spanish, 36.58% from documents in English, 13.79% from Spanish-English bilingual documents (which corresponds precisely to the Journal of Medicine and Movies) and 2.55% come from documents in other languages such as Italian, Portuguese and German. Spanish predominates in the quotes from books (218/ 287x100=76%), Dissertations and Conferences and presentations of papers in congresses (8/9 x100=89%) and articles in newspapers (9/9 x100=100%), and English prevails in Scientific journals (130/ 285 x100=46%), Databases and web pages on the Internet (40/66 x100=61%), and Statistics, reports, files and official legal rules (11/11 x100=100%).

Table 10. Distribution of the number of references according to language and type of document in the Journal of Medicine and Movies

Type of document
Language Books Scientific journals Databases and web pages on the Internete Statistics, reports, files and official legal rules Dissertations and Conferences and presentations of papers in congresses Articles in the journals Total
Spanish 218 53 26 - 8 9 314
English 62 130 40 11 1 - 244
Spanish and English - 92* - - - - 92
Others(italian,french o portuguese) 7 10 - - - - 17
Total 287 285 66 11 9 9 667

* Corresponds to the Journal of Medicine and Movies

Concerning the type of article, table 7 shows that the index of quotes per paper was higher in the sub-section Editors’ forum (11.23%) and lower in Medicine in film scenes and Correspondence (3.33%), the values of Editorial comment and Editorial (6%) and of Originals (7.72%) being similar to the general index (7.76%).

Table 11. Distribution of the number of references according to sub-section in the Journal of Medicine and Movies

sub-sections
Number of quotes Editorial comment and Editorial Originals Editor's forum Medicine in film scenes and Correspondence Total of articles / number of quotes
1 1 3 - 1 5
2 2 3 1 1 7
3 - 2 1 - 3
4 4 6 - - 10
5 2 8 - - 10
6 1 3 2 - 6
7 3 4 2 1 10
8 - 3 2 - 5
9 2 4 - - 6
10 - 2 - - 2
11 - 4 2 - 6
12 - 1 - - 1
13 2 5 - - 7
15 - 2 - - 2
16 - 1 - - 1
18 - 1 - - 1
19 - 1 - - 1
20 - - 1 - 1
21 - - 1 - 1
36 - - 1 - 1
Total of articles 17 53 13 3 86
Total of quotes / sub-sections 102 409 146 10 667
Index of quotes / article 6 7,72 11,23 3,33 7,76

On key words

In the sub-sections whose articles included key words the number per article was counted, resulting in an average of 4.97 per paper (standard deviation 1.52). The frequency distribution according to sub-section and articles in general is shown in table 8, proving that papers with 4 and 5 key words make up 66% of the total.

Table 12. Distribution of the number of key words according to sub-section in the Journal of Medicine and Movies

Sections
Number of keywords / paper Originals Forum Correspondence Total of articles per keywords
1 - - 1 1
3 3 1 1 5
4 17 4 - 21
5 19 5 - 24
6 7 2 - 9
7 4 1 - 5
9 2 - - 2
11 1 - - 1
Total 53 13 2 68

On the covers

From the year 2007 onwards, a sub-section called On the cover was included in each number of the journal, in which its content is briefly described as transcribed in table 9.

Table 13. Description of the covers of the 2007 and 2008 volumes of the Journal of Medicine and Movies

Volume Number Description
3 2007 1 University of Salamanca: detail of the façade of the historical building (16th century), the famous frog.
3 2007 2 University of Salamanca: façade of the Colegio Mayor Arzobispo Fonseca (16th century), now teachers’ residence.
3 2007 3 University of Salamanca: Palacio de Anaya (18th century), staircase to access the first floor
3 2007 4 University of Salamanca: Patio de Escuelas Menores (15th century).
4 2008 1 Baroque façade of the Universidad Pontificia de Salamanca (1617-1754), designed by the royal architect Juan Gómez de Mora.
4 2008 2 Palacio de Don Diego Maldonado. Plateresque façade designed by Juan de Álava (1530-1531). To be Centre of Brazilian Studies of the University of Salamanca.
4 2008 3 Palacio de Anaya (18th century). Neoclassical style. Architects: José Hermosilla and Sandoval (beginning of the 18th century – 1776) and Juan de Sagarvinaga (1710 – 1797). It is now the Faculty of Philology of the University of Salamanca.
4 2008 4 Casa de Francisco de Solís. Plateresque façade (16th century). It now harbours Ediciones Universidad de Salamanca

Discussion

Bibliometric studies, whose purpose is the treatment and quantitative analysis of scientific publications, are part of science’s social studies3 using indicators that are valid measures to assess, among others, the levels of scientific production of a country, an establishment, an author or a publication13 and to classify scientific journals according to their production, circulation and impact16. In this sense, an analysis of the Journal of Medicine and Movies related to the articles published in it, the authorships, the bibliographic references and the key words has been made using both production and consumption indicators.

Concerning the type of document, the result was 54% of original papers, placing this journal in an intermediate position between the 42% obtained by the Spanish Paediatric Annals14 and the 56% of the Spanish scientific production in the cardiovascular area18 or the 59% of Mapfre Medicine19. Nevertheless, the fact that the Journal of Medicine and Movies has published a considerable number of originals would point towards an editorial policy targeted at spreading new production among the scientific community while widening its offer with the publication of other types of document such as Editorial comments and/or Editorials, Editors’ forums, Medicine in stills and Medicine in film scenes or Correspondences.

Concerning the analysis of the authorships, the average cooperation index of 1.82 authors per article is slightly above the average of 1.51 signatures/paper in Science, Hispanic-American journal of pure an applied sciences20 and the Psychology Yearbook21 and close to the 2.22 value of the Spanish journal of drug addiction22 and that of 2.27 signatures/article of Psicothema23. However, it is noticeably below that of other Spanish journals such as the Spanish Journal of Public Health with an average of 4.513 and the total Spanish average of the biomedical area which is between 3 and 3.5 authors/paper24.

Although shared authorship is more frequent nowadays25, the distribution of the papers according to the number of signatures allowed us to see that most of them (52%) were signed by a single author. Given the fact that similar situations have been recorded for publications such as Psychology Yearbook and Journal of Sex Research, with the highest percentage of all the papers with single authorship (68% and 39% respectively)21,26, it is possible to think that the kind of articles in these journals, as opposed to what takes place in experimental sciences, favours a special form of individual reflection.

The authors’ geographical place of origin shows a predominance of Salamanca – city where the journal is published – followed, as the years go by, by a growing participation of authors from other parts of Spain. Concerning other countries, some Hispanic ones take part, as in the Spanish Journal of Public Health25 and, mainly the Argentinean connection27 which made a contribution of 14% of the overall production. In this sense, the prospects and opening towards other horizons of this publication have been very positively appreciated by editors15.

The bibliographic references are a source of data that allows the knowledge of what kind of information the authors consume and of how fast that information becomes outdated9. The average number of quotes per article in the Journal of Medicine and Movies is approximately 8, comparable to the result shown in the bibliometric map of Spain for the 1994- 2002 period, which is situated at 7.6 references per document28, and evidently below that obtained in studies on medical areas, with values of 2129, 2412 o 25.7 references per paper30.

The consumption indexes such as the Price Index provide information on the obsolescence of scientific production. The estimated value close to 39% cannot be considered low for this type of publication, being similar to that obtained in other studies, with Price indexes higher than 35 %31 or 40%30 and higher than the 28% obtained by the references in Science, Hispanic-American journal of pure and applied sciences20 even when articles referring to very dynamic fields, which usually have very high numbers, are published in them.

Concerning the type of document indexed, books and articles from scientific journals were the most quoted (43% for both), followed by databases and web pages on the internet (10%), the use of other types of document being much less frequent. The predominance of quotes from other journals is in accordance with most of the publications, although it tends to be higher as in the case of the 68% obtained by the Spanish journal of public health30, while the high percentage in the use of books could be justified by the main purpose of the Journal of Medicine and Movies which is to form, inform, and arouse the critic spirit and observation ability15 that would find support in works of longer endurance.

As far as publication language is concerned, 47% of the total of the references came from documents in Spanish, a similar figure to the 51% in the quotes of the Spanish Journal of Public Health30, but much higher than the data from other Spanish journals like the 20% obtained by Clinical Medicine32 or the 8% of the more specialised Dermosyphiliographic Records33. However, if we divide it according to the type of document, Spanish predominates among the quotes from books (78%) and English, as the official language of science, was the most frequently used among the references of periodical publications (78% including the bilingual journal).

As far as key words are concerned, an average of 5 per article was proved, making their usefulness evident for the analysis of papers according to subject and for the description of aspects which could be of interest to the readers1.

Finally, a special reference should be made, from my point of view, to the valuable covers of the collection. In each of them there are photos of historical and very beautiful buildings in Salamanca, which favours the knowledge and disclosure of beauties both from the historical University and from the city.

It could be concluded that, in general, the Journal of Medicine and Movies has evolved satisfactorily, keeping within the general indicators of other stronger scientific journals. Although a quantitative bibliometric analysis does not provide direct elements to assess the quality of the production of a publication13, the study carried out can be used as an indicator of the scientific-humanistic activity which has taken place during the last 4 years with the use of film as an element for the creation of attitudes towards science and as a means of access to knowledge34.

Translation by the team of the Languages Service of the University of Salamanca.


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