Skip to main content


Log in

Scientific research in obstructive sleep apnea syndrome: bibliometric analysis in SCOPUS, 1991–2012

  • Original Article
  • Published:
Sleep and Breathing Aims and scope Submit manuscript



The research in obstructive sleep apnea (OSA) may be beneficial from the collaboration between countries and researchers. In this study, we aimed to analyze the scientific research on OSA from 1991 to 2012 and to evaluate the collaboration networks between countries.


We conducted a bibliometric study in the SCOPUS database. The systematic search was limited to “articles” published from 1991 to 2012. Articles are results of original research; we evaluated the following criteria: number of countries represented, number of authors, number of citations, and journal names. We determined which countries were the most productive (more articles published) and the number of collaborations between these countries. The probability of citation was evaluated using adjusted odds ratios in a logistic regression analysis.


We found a total of 6,896 OSA-related articles that had been published in 1,422 journals, 50 % of these articles were concentrated in 41 journals. Of the 74 different countries associated with these articles, the USA had the highest involvement with 23.8 % of all articles published. The probability of citation increased by 1.23 times for each additional author, and by 2.23 times for each additional country represented; these findings were independent of time since publication, journal, or the country of the author.


Scientific production on OSA is increasing with limited international collaboration. The country with the greatest production in this period (1991–2012) was the USA, which concentrated the international collaboration network on OSA. We recommended that articles should be produced with international collaboration to improve the quantity of scientific publications and their chances of publication in high impact journals.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others


  1. Peppard PE, Young T, Barnet JH, Palta M, Hagen EW, Hla KM (2013) Increased prevalence of sleep-disordered breathing in adults. Am J Epidemiol. doi:10.1093/aje/kws342

    Google Scholar 

  2. Young T, Shahar E, Nieto FJ, Redline S, Newman AB, Gottlieb DJ et al (2002) Predictors of sleep-disordered breathing in community-dwelling adults: the Sleep Heart Health Study. Arch Intern Med 162(8):893–900

    Article  PubMed  Google Scholar 

  3. Claude R, Concepcion W, Jean Francis G, Charles-Daniel A (2007) The evolution of the sleep science literature over 30 years: a bibliometric analysis. Scientometrics 73(2):231–256

    Article  Google Scholar 

  4. Shariq K (2005) Sleep centers in the U.S. reach 2515 in 2004. Sleep 28(1):145–146

    PubMed  Google Scholar 

  5. Huang CP (2009) Bibliometric analysis of obstructive sleep apnea research trends. J Chin Med Assoc: JCMA 72(3):117–123

    Article  PubMed  Google Scholar 

  6. Katz JS, Martin BR (1997) What is research collaboration? Res Policy 26(1):1–18

    Article  Google Scholar 

  7. Wagner CS, Leydesdorff L (2005) Network structure, self-organization, and the growth of international collaboration in science. Res Policy 34(10):1608–1618

    Article  Google Scholar 

  8. Falagas ME, Pitsouni EI, Malietzis GA, Pappas G (2008) Comparison of PubMed, Scopus, Web of Science, and Google Scholar: strengths and weaknesses. FASEB J: Off publ Fed Am Soc Exp Biol 22(2):338–342

    Article  CAS  Google Scholar 

  9. Kamada T, Kawai S (1989) An algorithm for drawing general undirected graphs. Inf Process Lett 31:7

    Article  Google Scholar 

  10. Gonzalez-Alcaide G, Park J, Huamani C, Gascon J, Ramos JM (2012) Scientific authorships and collaboration network analysis on Chagas disease: papers indexed in PubMed (1940–2009). Rev Inst Med Trop Sao Paulo 54(4):219–228

    Article  PubMed  Google Scholar 

  11. Fietze I, Penzel T, Alonderis A, Barbe F, Bonsignore MR, Calverly P et al (2011) Management of obstructive sleep apnea in Europe. Sleep Med 12(2):190–197

    Article  CAS  PubMed  Google Scholar 

  12. Huamani C, Gonzalez AG, Curioso WH, Pacheco-Romero J (2012) Scientific production in clinical medicine and international collaboration networks in South American countries. Rev Med Chil 140(4):466–475

    Article  PubMed  Google Scholar 

  13. Chen TJ, Chen YC, Hwang SJ, Chou LF (2007) International collaboration of clinical medicine research in Taiwan, 1990–2004: a bibliometric analysis. J Chin Med Assoc: JCMA 70(3):110–116

    Article  PubMed  Google Scholar 

  14. Asplund K, Eriksson M, Persson O (2012) Country comparisons of human stroke research since 2001: a bibliometric study. J Stroke Cereb Circ 43(3):830–837

    Article  Google Scholar 

  15. Jamshidi AR, Gharibdoost F, Nadji A, Nikou M, Habibi G, Mardani A et al (2013) Presentation of psoriatic arthritis in the literature: a twenty-year bibliometric evaluation. Rheumatol Int 33(2):361–367

    Article  PubMed  Google Scholar 

  16. Huamani C, Gonzalez-Alcaide G (2013) Surgical clinical trials–need for international collaboration. Lancet 382(9908):1875–1876

    Article  PubMed  Google Scholar 

  17. Luo J, Flynn JM, Solnick RE, Ecklund EH, Matthews KR (2011) International stem cell collaboration: how disparate policies between the United States and the United Kingdom impact research. PloS One 6(3):e17684

    Article  PubMed Central  CAS  PubMed  Google Scholar 

  18. Gonzalez-Alcaide G, Huamani C, Park J, Ramos JM (2013) Evolution of coauthorship networks: worldwide scientific production on leishmaniasis. Rev Soc Bras Med Trop 46(6):719–727

    Article  PubMed  Google Scholar 

  19. Akashiba T, Kawahara S, Akahoshi T, Omori C, Saito O, Majima T et al (2002) Relationship between quality of life and mood or depression in patients with severe obstructive sleep apnea syndrome. Chest 122(3):861–865

    Article  PubMed  Google Scholar 

  20. Young T, Evans L, Finn L, Palta M (1997) Estimation of the clinically diagnosed proportion of sleep apnea syndrome in middle-aged men and women. Sleep 20(9):705–706

    CAS  PubMed  Google Scholar 

  21. Simpson L, Hillman DR, Cooper MN, Ward KL, Hunter M, Cullen S et al (2013) High prevalence of undiagnosed obstructive sleep apnoea in the general population and methods for screening for representative controls. Sleep Breath 17(3):967–973

    Article  PubMed  Google Scholar 

  22. Bahammam AS (2011) Sleep medicine in Saudi Arabia: current problems and future challenges. Ann Thorac med 6(1):3–10

    Article  PubMed Central  PubMed  Google Scholar 

  23. Lichstein KL (2003) Is there a need for another sleep journal? J Psychosom Res 54(1):93–96

    Article  PubMed  Google Scholar 

  24. Huang M-H, Dong H-R, Chen D-Z (2013) The unbalanced performance and regional differences in scientific and technological collaboration in the field of solar cells. Scientometrics 94(1):423–438

    Article  Google Scholar 

  25. Li J, Xiong H, Zhang S, Sorensen OJ (2012) Co-authorship patterns in East Asia in the light of regional scientific collaboration. J Sci and Technol Policy in China 3(2):145–163

    Article  Google Scholar 

  26. Du L, Chen Y, Huang J, Li Y (2012) A citation analysis of systematic review and meta-analysis published in Chinese journals. J Evid-Based med 5(2):66–74

    Article  PubMed  Google Scholar 

  27. Man JP, Weinkauf JG, Tsang M, Sin DD (2004) Why do some countries publish more than others? An international comparison of research funding, English proficiency and publication output in highly ranked general medical journals. Eur J Epidemiol 19(8):811–817

    Article  PubMed  Google Scholar 

Download references


The authors wish to acknowledge the AFIP and CNPq of Brazil for financial support. MLA and ST are recipients of fellowships from CNPq.

Conflict of interest

The authors declare that there are no conflicts of interest.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Charles Huamaní.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Huamaní, C., Rey de Castro, J., González-Alcaide, G. et al. Scientific research in obstructive sleep apnea syndrome: bibliometric analysis in SCOPUS, 1991–2012. Sleep Breath 19, 109–114 (2015).

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: