PhD Theses Defended in Croatia (1992-2023): A Retrospective Analysis of Trends, Institutional Contributions, and Data Collection Challenges
DOI:
https://doi.org/10.5644/ama2006-124.488Keywords:
Academic Dissertations as Topic, Higher Education, Universities, CroatiaAbstract
Objective. This study analyzed PhD theses defended in Croatia between 1992 and 2023, with the aim of examining national trends, institutional contributions, disciplinary patterns, and data-related challenges.
Methods. This retrospective time-trend study utilized the administrative data obtained from the Croatian Bureau of Statistics. Data on the number of defended PhD theses were collected by year, university, and school/department. Linear regression models were applied to assess temporal trends at both the national and institutional levels.
Results. A total of 17,578 PhD theses were defended in Croatia between 1992 and 2023. The national output increased substantially, reaching a peak of 1,338 theses in 2012, followed by a subsequent decline and a gradual recovery. The University of Zagreb accounted for 74.8% of all defended theses, followed by the Universities of Osijek, Rijeka, and Split. Across institutions, the medical, economic, and engineering faculties were the most productive. Linear regression analyses demonstrated statistically significant upward trends at both the national level and across all major public universities. Collectively, medical schools produced 18% of all theses, with newer institutions, particularly those in Split and Osijek, exhibiting later but consistent growth. However, notable data inconsistencies were observed, including non-standardized insti- tutional nomenclature, variable data granularity, and discrepancies among official reports.
Conclusion. Croatia’s PhD output expanded markedly after 2000, reflecting the maturation and expansion of its higher education system. Regional universities and medical schools substantially increased their contributions, indicating national academic growth. Sustained institutional support will be essential to sustain progress and foster disciplinary development.
References
Casey BH. The economic contribution of PhDs. J High Educ Policy Manag. 2009;31(3):219-27. doi: 10.1080/13600800902974294.
Read H, Pugh A, Riley B, Bramley G. Quality and Quali- fications Ireland (QQI). A review of the economic and social value produced through funding PhD students. Dublin: QQI; 2024. [cited 2025 October 16]. Available from: https://pure-oai.bham.ac.uk/ws/files/225219358/ NCIA_Economic_and_Social_Impacts_of_PhDs.pdf.
Croatian Bureau of Statistics. Research and development, 2023. Statistical Yearbook of the Republic of Croatia. Zagreb: Croatia; 2024. [cited 2025 October 16]. Available from: https://podaci.dzs.hr/2024/en/76946.
Vrdoljak I. Development of Lifelong Education in the Republic of Croatia: An Analysis of Trends in PhD Graduations. ENTRENOVA - ENTerprise REsearch InNOVAtion. 2023;9(1):141-51. doi: 10.54820/entreno- va-2023-0014.
Puljak L, Tolić M, Sablić M, Silobrčić V, Heffer M, Polić B, et al. Difficulties in Accessing the List and Full Text of the Defended PhD Theses from Medical Schools: a Retrospective Case Study from Croatia. Acta Med Acad. 2024;53(1):1-9. doi: 10.5644/ama2006-124.437. PubMed PMID: 38629247; PubMed Central PMCID: PMC11237902.
Croatian Parliament. June 25 – Independence Day [Inter- net]. Zagreb: sabor.hr; [cited 2025 Jun 4]. Available from: https://www.sabor.hr/hr/o-saboru/povijest-saborovanja/ vazni-datumi/25-lipnja-dan-neovisnosti.
Vandenbroucke JP, von Elm E, Altman DG, Gøtzsche PC, Mulrow CD, Pocock SJ, et al. Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): ex- planation and elaboration. Epidemiology. 2007;18(6):805-35. doi: 10.1097/EDE.0b013e3181577511. PubMed PMID: 18049195.
Gluncić V, Pulanić D, Prka M, Marusíc A, Marusíc M. Curricular and extracurricular activities of medical students during war, Zagreb University School of Medicine, 1991-1995. Acad Med. 2001;76(1):82-7. doi: 10.1097/00001888-200101000-00022. PubMed PMID: 11221772.
Marusic M. War and medical education in Croatia. Acad Med. 1994;69(2):111-3. doi: 10.1097/00001888-199402000-00005. PubMed PMID: 8311870.
Puljak L, Brnjas Kraljevic J, Barac Latas V, Sapunar D. Demographics and motives of medical school applicants in Croatia. Med Teach. 2007;29(8):e227-34. doi: 10.1080/01421590701551714. PubMed PMID: 18236266.
Frančula N, Lapaine M, Frangeš S. [The Bologna declaration and study reform at the Faculty of Geodesy, University of Zagreb] Bolonjska deklaracija i reforma studija na Geodetskom fakultetu Sveučilišta u Zagrebu. Geod list. 2004;3:211-7. Croatian.
Act on Scientific Activity and Higher Education. Narodne novine [Internet]. 2003;123:1742. [cited 2025 October 16]. Available from: https://narodne-novine.nn.hr/clanci/sluzbeni/2003_07_123_1742.html.
Act on Amendments to the Act on Scientific Activity and Higher Education. Narodne novine [Inter- net]. 2016;41:1090. [cited 2025 October 16] Available from: https://narodne-novine.nn.hr/clanci/sluzbe- ni/2016_05_41_1090.html.
Kottmann A. Reform of Doctoral Training in Europe: A Silent Revolution? In Enders J, de Boer HF, Westerheijden DF, editors, Reform of Higher Education in Europe. Rotterdam, The Netherlands: Sense Publishers; 2011. p. 29-44. doi: 10.1007/978-94-6091-555-0_3.
European Commission. The European Higher Education Area in 2024: Bologna Process Implementation Report. Luxembourg: Publications Office of the European Union; 2024. 292 p. [cited 2025 October 16]. Available from: https://ehea.info/Immagini/the-european-higher-educa- tion-area-in-2024-EC0224018ENN1.pdf.
Sarrico CS. The expansion of doctoral education and the changing nature and purpose of the doctorate. Higher Education. 2022;84(6):1299-315. doi: 10.1007/s10734-022-00946-1.
OECD. “Challenges and new demands on the academic research workforce”, in OECD science, technology and innovation outlook 2021: Times of crisis and opportunity. Paris: OECD Publishing; 2021. [cited 2025 October 16]. Available from: https://doi.org/10.1787/72f6f879-en.
Zhuchkova S, Bekova S. Is Doctoral Education Not for Everyone? How the University Reforms Led to Centralization of Doctoral Programs in the Leading Universities. Voprosy obrazovaniya / Educational Studies Moscow. 2023(1). doi: 10.17323/1814-9545-2023-1-109-125.
Klarica M. The role of the University of Zagreb School of Medicine in the development of education, health care, and science in Croatia. Croat Med J. 2018;59(5):185-8. doi: 10.3325/cmj.2018.59.185. PubMed PMID: 30394010; PubMed Central PMCID: PMC6240824.
Sepčić J. Fifty years of the School of medicine of the University of Rijeka. Acta medico-historica Adriatica. 2005;3(2):157-76.
Rumboldt Z. Medical school in Split: intentions and achievements. Croat Med J. 2000;41(4):361-7. PubMed PMID: 11063756.
Tucak A, Fatović-Ferenčić S. History of Osijek School of Medicine. In: Filaković P, editor. 10 godina Medicinskog fakulteta 1998.–2008. Osijek: Medicinski fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku; 2008. p. 13-21.
Frković V, Skender T, Dojćinović B, Bilić-Zulle L. Publishing scientific papers based on Master’s and Ph.D. theses from a small scientific community: case study of Croatian medical schools. Croat Med J. 2003;44(1):107-11. PubMed PMID: 12590439.
Viđak M, Tokalić R, Marušić M, Puljak L, Sapunar D. Improving completion rates of students in biomedical PhD programs: an interventional study. BMC Med Educ. 2017;17(1):144. Epub 20170825. doi: 10.1186/s12909-017-0985-1. PubMed PMID: 28841882; PubMed Central PMCID: PMC5572062.
Benzon B, Vukojevic K, Filipovic N, Tomić S, Glavina Durdov M. Factors That Determine Completion Rates of Biomedical Students in a PhD Programme. Education Sciences. 2020;10(11):336. PubMed PMID: doi:10.3390/ educsci10110336.
Downloads
Published
License
Copyright (c) 2025 Livia Puljak, Damir Sapunar

This work is licensed under a Creative Commons Attribution 4.0 International License.


