2019 tables: Institutions

The 2019 tables are based on Nature Index data from 1 January 2018 to 31 December 2018.

Table criteria

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# Institution Share 2017 Share 2018 Count 2018 Change in Adjusted Share* 2017–2018
1 University of Crete (UOC), Greece 10.39 13.13 49 19.2%
2 National and Kapodistrian University of Athens (UOA), Greece 12.48 10.52 236 -20.4%
3 Foundation for Research and Technology - Hellas (FORTH), Greece 11.05 8.39 31 -28.4%
4 National Centre for Scientific Research 'Demokritos' (NCSR), Greece 8.37 7.66 122 -13.6%
5 National Technical University of Athens (NTUA), Greece 6.51 7.64 175 10.8%
6 University of Ioannina (UOI), Greece 4.92 7.48 123 43.4%
7 University of Patras, Greece 5.13 5.98 22 10.0%
8 Academy of Athens, Greece 5.40 4.60 25 -19.5%
9 Biomedical Sciences Research Centre Alexander Fleming (BSRC Fleming), Greece 2.85 3.65 9 21.0%
10 Aristotle University of Thessaloniki (AUTH), Greece 6.70 3.47 76 -51.1%
11 National Hellenic Research Foundation (NHRF), Greece 0.27 2.46 10 763.2%
12 National Observatory of Athens (NOA), Greece 1.82 1.69 8 -12.3%
13 Technical University of Crete (TUC), Greece 0.15 1.05 3 551.9%
14 Harokopio University of Athens (HUA), Greece 0.30 0.74 7 129.8%
15 University of the Aegean, Greece 0.41 0.58 29 34.9%
16 Greek Atomic Energy Commission (EEAE), Greece – 0.50 1 N/A
17 Hellenic Centre for Marine Research (HCMR), Greece 1.06 0.49 3 -56.4%
18 University of Thessaly (UTH), Greece 0.06 0.47 4 607.3%
19 Hellenic Mediterranean University (HMU), Greece 1.31 0.44 3 -68.6%
20 Alexander Technological Educational Institute of Thessaloniki (ATEIT), Greece – 0.43 1 N/A
21 Agricultural University of Athens, Greece 0.36 0.38 2 0.7%
22 Fasmatech Science and Technology S.A., Greece – 0.33 1 N/A
23 Athena Research and Innovation Center in Information, Communication and Knowledge Technologies (Athena RIC), Greece 0.02 0.23 1 1089.4%
24 Hellenic Open University (HOU), Greece 0.02 0.17 12 726.5%
25 Center for Research and Technology Hellas (CERTH), Greece 0.21 0.17 1 -25.5%
26 Innovative Technologies Center S.A. (ITC), Greece – 0.13 1 N/A
27 Democritus University of Thrace (DUTH), Greece 0.70 0.09 2 -88.5%
28 Delta Foods S.A., Greece – 0.08 1 N/A
29 Metaxa Cancer Hospital of Piraeus, Greece – 0.06 1 N/A
29 American School of Classical Studies at Athens (ASCSA), Greece – 0.06 1 N/A
30 Hellenic Electricity Distribution Network Operator S.A., Greece – 0.06 1 N/A
31 Piraeus University of Applied Sciences (Technological Education Institute of Piraeus), Greece 0.00 0.04 1 922.6%
31 Anogia Medical Centre, Greece 0.08 0.04 1 -52.1%
31 ThetaMetrisis S.A., Greece – 0.04 1 N/A
32 Sotiria Chest Diseases Hospital of Athens, Greece 0.10 0.03 1 -70.5%
33 Dromokaiteio Psychiatric Hospital of Athens, Greece – 0.03 3 N/A
34 E-nios Applications Private Limited Company, Greece – 0.02 1 N/A
35 University General Hospital of Heraklion (PAGNI), Greece 0.01 0.02 2 31.5%
36 University Mental Health Research Institute (UMHRI), Greece 0.02 0.02 2 -18.7%
37 Theodor-Theohari Cozzika Foundation, Greece 0.01 0.01 2 -23.6%
38 Hellenic Ministry of Culture and Sports, Greece 0.09 0.01 1 -90.9%
39 Penteli Children's Hospital, Greece – 0.01 1 N/A
40 Euromedica General Clinic, Greece – 0.01 1 N/A
41 Hellenic Amateur Astronomy Association, Greece – 0.00 1 N/A
42 General University Hospital of Larissa, Greece – 0.00 1 N/A
43 P. A. Kyriakou Children’s Hospital, Greece – 0.00 1 N/A
44 TEMES S.A., Greece 0.07 0.00 1 -97.7%
45 Greek Association of Alzheimer’s Disease and Related Disorders (Alzheimer Hellas), Greece – 0.00 1 N/A

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals through 2022, in 2023 64 health-science journals were added to the Index. The 146 journals in the Nature Index were selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at nature.com/nature-index/.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2022 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.


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